GE CAPITAL MORTGAGE SERVICES INC
424B5, 1998-07-28
ASSET-BACKED SECURITIES
Previous: CORNERCAP GROUP OF FUNDS /VA/, 485BPOS, 1998-07-28
Next: BAKER J INC, S-8, 1998-07-28




<PAGE>

                                            Rule No. 424(b)(5)
                                            Registration Statement No. 333-51151

PROSPECTUS SUPPLEMENT
(To Prospectus dated May 26, 1998)
 
                                  $967,541,919
                                 (APPROXIMATE)
                       GE CAPITAL MORTGAGE SERVICES, INC.
                             (Seller and Servicer)
          REMIC MULTI-CLASS PASS-THROUGH CERTIFICATES, SERIES 1998-12
       PRINCIPAL AND INTEREST PAYABLE MONTHLY, BEGINNING AUGUST 25, 1998.
                               ------------------
 
The REMIC Multi-Class Pass-Through Certificates, Series 1998-12 (the
'Certificates') will consist of four groups of Certificates (the 'Pool 1
Certificates,' the 'Pool 2 Certificates', the 'Pool 3 Certificates' and the
'Pool 4 Certificates'), each evidencing beneficial ownership interests in a
distinct trust fund (each, a 'Trust Fund'). The assets of each Trust Fund will
consist primarily of a distinct pool ('Pool 1,' 'Pool 2,' 'Pool 3' and 'Pool 4,'
respectively, and each a 'Mortgage Pool') of conventional, fixed-rate,
first-lien, fully-amortizing, one- to four-family residential mortgage loans
(the 'Mortgage Loans') having original terms to maturity of 20 to 30 years (in
the case of Pool 1, Pool 2 and Pool 4) and 10 to 15 years (in the case of Pool
3), and sold by GE Capital Mortgage Services, Inc. (the 'Company'). See
'Description of the Mortgage Pools and the Mortgaged Properties' herein.
 
                                                  (Cover continued on next page)
                               ------------------
  NEITHER THESE CERTIFICATES NOR THE UNDERLYING MORTGAGE LOANS ARE INSURED OR
           GUARANTEED BY ANY GOVERNMENTAL AGENCY OR INSTRUMENTALITY.
                               ------------------
 THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
       EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS
        THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
           COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS
            PROSPECTUS SUPPLEMENT OR THE ACCOMPANYING PROSPECTUS.
                      ANY REPRESENTATION TO THE CONTRARY
                            IS A CRIMINAL OFFENSE.

<TABLE>
<CAPTION>
                       CLASS
                    CERTIFICATE      CERTIFICATE
                     PRINCIPAL        INTEREST
                     BALANCE(1)         RATE
                     ----------      ----------- 
<S>                 <C>              <C>
POOL 1
Class 1-A1......    $ 53,290,000         6.50%
Class 1-A2......      39,687,000         6.60
Class 1-A3......      43,496,000         6.70
Class 1-A4......      33,220,000         6.75
Class 1-A5......      13,974,000         6.75
Class 1-A6......        (2)              6.75
Class 1-A7......      93,271,000         6.75
Class 1-A8......      38,202,219          (3)
Class 1-A9......       9,904,279          (3)
Class 1-A10.....         116,705         6.75(4)
Class 1-A11.....      28,341,750          (3)
Class 1-A12.....       9,447,250          (3)
Class 1-A13.....      20,199,000         6.75
Class 1-A14.....         625,797         6.75(4)
Class 1-M.......       7,412,000         6.75
Class 1-B1......       3,205,500         6.75
Class 1-B2......       1,803,000         6.75
Class 1-R.......              50         6.75
Class 1-RL......              50         6.75
POOL 2
Class 2-A1......      42,800,000         6.60

<CAPTION>
                       CLASS
                    CERTIFICATE      CERTIFICATE
                     PRINCIPAL        INTEREST
                     BALANCE(1)         RATE
                     ----------      -----------
<S>                 <C>              <C>
Class 2-A2......    $ 23,450,000         6.55%
Class 2-A3......        (2)              6.75
Class 2-A4......      69,660,000          (3)
Class 2-A5......      13,416,000          (3)
Class 2-A6......       4,644,000          (3)
Class 2-A7......       5,361,000         6.75(4)
Class 2-A8......         968,000         6.75(4)
Class 2-A9......      31,800,000         6.75
Class 2-M.......       3,703,000         6.75
Class 2-B1......       1,502,000         6.75
Class 2-B2......         801,000         6.75
Class 2-R.......             100         6.75
Class 2-RL......             100         6.75
POOL 3
Class 3-A1......      37,700,000         6.50
Class 3-A2......       2,300,000         6.50
Class 3-A3......      10,000,000         6.50
Class 3-A4......     121,818,119         6.50
Class 3-M.......       1,320,017         6.50
Class 3-B1......         440,005         6.50
Class 3-B2......         440,005         6.50

<CAPTION>
                       CLASS
                    CERTIFICATE      CERTIFICATE
                     PRINCIPAL        INTEREST
                     BALANCE(1)         RATE
                     ----------      ----------- 
<S>                 <C>              <C>
Class 3-R.......    $        100         6.50%
POOL 4
Class 4-A1......      71,750,000         6.75
Class 4-A2......      11,149,185          (3)
Class 4-A3......       3,716,395          (3)
Class 4-A4......      20,140,000         6.75
Class 4-A5......      45,100,000         6.75
Class 4-A6......      19,500,000         6.75
Class 4-A7......       3,125,000         7.00
Class 4-A8......       3,125,000         6.50
Class 4-A9......       3,300,000         6.75
Class 4-A10.....       3,100,000         7.00
Class 4-A11.....       3,100,000         6.50
Class 4-A12.....       3,750,000         6.75
Class 4-A13.....       2,124,900         6.75
Class 4-M.......       3,725,240         6.75
Class 4-B1......       1,610,914         6.75
Class 4-B2......         906,139         6.75
Class 4-R.......             100         6.75
</TABLE>
 
(1) Approximate, subject to adjustment as described herein.
 
(2) The Class 1-A6 and Class 2-A3 Certificates will be interest-only
    Certificates. Interest will accrue on the aggregate Notional Principal
    Balance (as defined herein) thereof as of the related Distribution Date
    (initially, approximately $3,177,829 and $1,645,926, respectively).
 
(3) The Class 1-A8, Class 1-A9, Class 1-A11, Class 1-A12, Class 2-A4, Class
    2-A5, Class 2-A6, Class 4-A2 and Class 4-A3 Certificates will accrue
    interest during the initial Interest Accrual Period (as defined herein) at
    the respective rate set forth below, and each such Certificate will accrue
    interest during each subsequent Interest Accrual Period at the respective
    rates determined as set forth below:
 

<TABLE>
<CAPTION>
                                                                                                  FORMULA FOR CALCULATING
   CLASS        INITIAL INTEREST RATE     MAXIMUM INTEREST RATE     MINIMUM INTEREST RATE        CERTIFICATE INTEREST RATE
- -----------     ---------------------     ---------------------     ---------------------     --------------------------------
<S>             <C>                       <C>                       <C>                       <C>
Class 1-A8                6.156%                    8.5000%                  0.50%                     LIBOR + 0.50%
Class 1-A9             9.041143                  30.857143                   0.00             30.857143% - (3.857143 x LIBOR)
Class 1-A11               6.356                     9.0000                   0.70                      LIBOR + 0.70%
Class 1-A12               7.932                    24.9000                   0.00                  24.9% - (3.0 x LIBOR)
Class 2-A4                6.150                     8.5000                   0.50                      LIBOR + 0.50%
Class 2-A5              9.60575                    38.9423                   0.00               38.9423% - (5.19231 x LIBOR)
Class 2-A6                7.500                     7.5000                   0.00                  120.0% - (15 x LIBOR)
Class 4-A2              6.55625                     9.0000                   0.90                      LIBOR + 0.90%
Class 4-A3              7.33125                    24.3000                   0.00                 24.300% - (3.00 x LIBOR)
</TABLE>
 
(4) The amount of interest accruing on the Class 1-A10, Class 1-A14, Class 2-A7
    and Class 2-A8 Certificates will not be distributable on such Certificates
    through the respective Accretion Termination Date (as defined herein) but
    will instead be added to the Class Certificate Principal Balance thereof,
    except as described herein.
 
   As described further herein, the Junior Certificates (as defined herein)
offered hereby may not be acquired by ERISA Plans (as defined herein). The Class
1-R, Class 1-RL, Class 2-R, Class 2-RL, Class 3-R and Class 4-R Certificates
(the 'Residual Certificates') may not be purchased by or transferred to (i) a
Disqualified Organization or Book-Entry Nominee (as defined in the accompanying
Prospectus), (ii) except under limited circumstances, a person who is not a U.S.
Person (as defined in the accompanying Prospectus), (iii) an ERISA Plan or (iv)
any person or entity who the transferor has reason to believe intends to impede
the assessment or collection of any federal, state or local taxes legally
required to be paid with respect thereto. See 'ERISA Considerations' and
'Description of the Certificates--Restrictions on Transfer of the Residual
Certificates' herein.
 
     Greenwich Capital Markets, Inc. ('Greenwich Capital'), Credit Suisse First
Boston Corporation ('CSFB') and Lehman Brothers Inc. ('Lehman' and, together
with Greenwich Capital and CSFB, the 'Underwriters') have each indicated its
intention to make a market in the Certificates offered hereby by each such
Underwriter, but is not obligated to do so. There can be no assurance that a
secondary market for such Certificates will develop, or if it does develop, will
continue. See 'Summary of Terms--Liquidity Considerations' herein.
 
   As described herein, the Pool 1 Certificates offered hereby will be purchased
by Greenwich Capital, the Pool 2 Certificates offered hereby will be purchased
by Lehman and the Pool 3 and Pool 4 Certificates offered hereby will be
purchased by CSFB, in each case from the Company, and are being offered by the
respective Underwriter from time to time in negotiated transactions or otherwise
at varying prices to be determined at the time of sale. Proceeds to the Company
from the sale of the Certificates offered hereby will be approximately
99.363090% of the aggregate initial Class Certificate Principal Balance of the
Certificates offered hereby plus accrued interest thereon from the Cut-off Date,
before deducting expenses payable by the Company. See 'Plan of Distribution'
herein.
 
   The Certificates offered hereby are offered when, as and if issued, delivered
to and accepted by the Underwriters and subject to certain other conditions. It
is expected that delivery of the Certificates offered hereby (other than the
Residual Certificates) will be made through the book-entry facilities of The
Depository Trust Company, and that delivery of the Pool 1 Residual Certificates
in definitive, fully registered form, will be made at the offices of Greenwich
Capital Markets, Inc., Greenwich, Connecticut, the Pool 2 Residual Certificates
in definitive, fully registered form, will be made at the offices of Lehman
Brothers Inc., New York, New York, and the Pool 3 and Pool 4 Residual
Certificates in definitive, fully registered form, will be made at the offices
of Credit Suisse First Boston Corporation, New York, New York on or about July
30, 1998.
 
                               ------------------
 
GREENWICH CAPITAL          CREDIT SUISSE FIRST BOSTON            LEHMAN BROTHERS
[LOGO]

            The date of this Prospectus Supplement is July 24, 1998.
<PAGE>

   For federal income tax purposes, the Pool 3 Trust Fund and the Pool 4 Trust
Fund will each consist of a single 'real estate mortgage investment conduit'
(each, a 'REMIC' or the 'Pool 3 REMIC' and the 'Pool 4 REMIC,' respectively).
The Pool 3 and Pool 4 Certificates other than the related Residual Certificates
will be treated as the regular interests in the related REMIC. The Pool 1 Trust
Fund and the Pool 2 Trust Fund will each consist of two REMICs (the 'Pool 1
Upper-Tier REMIC' and the 'Pool 1 Lower-Tier REMIC' and the 'Pool 2 Upper-Tier
REMIC' and the 'Pool 2 Lower-Tier REMIC'). Each Class of Pool 1 Cetificates,
other than the Class 1-R and Class 1-RL Certificates will be designated as
regular interests in the Pool 1 Upper-Tier REMIC. Each Class of Pool 2
Certificates, other than the Class 2-R and Class 2-RL Certificates will be
designated as regular interests (together with the Pool 1, Pool 3 and Pool 4
Certificates representing their respective regular interests, the 'Regular
Certificates') in the Pool 2 Upper-Tier REMIC. The Class 1-R, Class 1-RL, the
Class 2-R and Class 2-RL Certificates will be designated as the residual
interests (together, with the Class 3-R and Class 4-R Certificates, the
'Residual Certificates') in the Pool 1 Upper-Tier REMIC, the Pool 1 Lower-Tier
REMIC, the Pool 2 Upper-Tier REMIC and the Pool 2 Lower-Tier REMIC,
respectively. Prospective investors in the Residual Certificates are cautioned
that the Residual Certificateholders' REMIC taxable income and the tax liability
thereon may exceed cash distributions to such holders during certain periods, in
which event such holders must have sufficient alternative sources of funds to
pay such tax liability. See 'Summary of Terms--Certain Federal Income Tax
Consequences' and 'Certain Federal Income Tax Consequences' herein and 'Certain
Federal Income Tax Consequences' in the Prospectus.
 
                               ------------------
 
   THE CERTIFICATES OFFERED HEREBY CONSTITUTE A PART OF A SERIES OF PASS-THROUGH
CERTIFICATES BEING OFFERED BY THE COMPANY FROM TIME TO TIME PURSUANT TO ITS
PROSPECTUS DATED MAY 26, 1998 OF WHICH THIS PROSPECTUS SUPPLEMENT IS A PART.
THIS PROSPECTUS SUPPLEMENT DOES NOT CONTAIN COMPLETE INFORMATION ABOUT THE
OFFERINGS OF THE CERTIFICATES. ADDITIONAL INFORMATION IS CONTAINED IN THE
PROSPECTUS AND PURCHASERS ARE URGED TO READ BOTH THIS PROSPECTUS SUPPLEMENT AND
THE PROSPECTUS IN FULL. SALES OF THE CERTIFICATES MAY NOT BE CONSUMMATED UNLESS
THE PURCHASER HAS RECEIVED BOTH THIS PROSPECTUS SUPPLEMENT AND THE PROSPECTUS.
 
                                      S-2


<PAGE>

                                SUMMARY OF TERMS
 
     The following summary is qualified in its entirety by reference to the
detailed information appearing elsewhere herein and in the Prospectus.
Capitalized terms used herein and not otherwise defined have the meanings
assigned in the Prospectus.
 
<TABLE>
<S>                                         <C>
SECURITIES OFFERED........................  REMIC Multi-Class Pass-Through Certificates, Series 1998-12 (the
                                            'Certificates'), consisting of four groups of Certificates (the
                                            'Pool 1 Certificates,' the 'Pool 2 Certificates,' the 'Pool 3
                                            Certificates' and the 'Pool 4 Certificates' and each, a 'Certificate
                                            Group'), in the classes (each a 'Class') and aggregate original
                                            Certificate Principal Balances, subject to adjustment as described
                                            herein (each, a 'Class Certificate Principal Balance'), set forth on
                                            the cover hereof. The aggregate original Certificate Principal
                                            Balance of the Pool 1 Certificates will be approximately
                                            $400,661,896, subject to a permitted variance such that the aggregate
                                            original Certificate Principal Balance will not be less than
                                            $380,000,000 or greater than $420,000,000. The aggregate original
                                            Certificate Principal Balance of the Pool 2 Certificates will be
                                            approximately $200,222,314, subject to a permitted variance such that
                                            the aggregate original Certificate Principal Balance will not be less
                                            than $190,000,000 or greater than $210,000,000. The aggregate
                                            original Certificate Principal Balance of the Pool 3 Certificates
                                            will be approximately $176,002,356, subject to a permitted variance
                                            such that the aggregate original Certificate Principal Balance will
                                            not be less than $166,250,000 or greater than $183,750,000. The
                                            aggregate original Certificate Principal Balance of the Pool 4
                                            Certificates will be approximately $201,364,346, subject to a
                                            permitted variance such that the aggregate original Certificate
                                            Principal Balance will not be less than $190,000,000 or greater than
                                            $210,000,000.
 
                                            Each Certificate Group will evidence the entire beneficial ownership
                                            interest in a distinct Trust Fund comprised primarily of the related
                                            Mortgage Pool (as defined herein). Interest and principal will be
                                            distributable on the Certificates of a Certificate Group solely out
                                            of collections received on the Mortgage Loans in the related Trust
                                            Fund. The Trust Funds are not cross-collateralized. All expenses
                                            relating or attributable to a specific Trust Fund will be borne by
                                            the related Trust Fund. The Certificates of a Certificate Group may
                                            experience shortfalls or losses on a Distribution Date even though
                                            distributions are made on such date to Certificates of the other
                                            Certificate Group. See 'Description of the Mortgage Pools and the
                                            Mortgaged Properties--General' herein.
 
            POOL 1........................  The Pool 1 Certificates will consist of seventeen classes of senior
                                            certificates (the 'Class 1-Al, Class 1-A2, and so forth in
                                            consecutive numerical sub-designation through Class 1-A14, Class
                                            1-PO, Class 1-R and Class 1-RL Certificates,' and collectively, the
                                            'Pool 1 Senior Certificates') and six classes of subordinated
                                            certificates (the 'Class 1-M, Class 1-B1, Class 1-B2, Class 1-B3,
                                            Class 1-B4 and Class 1-B5 Certificates,' and collectively, the 'Pool
                                            1 Junior Certificates'). The Pool 1 Junior Certificates are
                                            subordinate in right of distribution to the Pool 1 Senior
                                            Certificates to the extent described herein. The initial aggregate
                                            Certificate Principal Balance of the Pool 1 Junior
</TABLE>
 
                                      S-3
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Certificates will equal approximately 4.00% of the initial aggregate
                                            Certificate Principal Balance of all of the Pool 1 Certificates.
 
                                            The Class 1-M Certificates are subordinate to the Pool 1 Senior
                                            Certificates to the extent described herein. The Class 1-B1, Class
                                            1-B2, Class 1-B3, Class 1-B4 and Class 1-B5 Certificates
                                            (collectively, the 'Class 1-B Certificates') are subordinate to the
                                            Pool 1 Senior Certificates and the Class 1-M Certificates, and each
                                            Class of Class 1-B Certificates is subordinate to the Class or
                                            Classes of Class 1-B Certificates having a lower numerical
                                            designation (i.e., the Class 1-B5 Certificates are subordinate to the
                                            Class 1-B4 Certificates, the Class 1-B4 Certificates are subordinate
                                            to the Class 1-B3 Certificates, and so on) to the extent described
                                            herein. The initial aggregate Certificate Principal Balance of the
                                            Class 1-B3, Class 1-B4 and Class 1-B5 Certificates will equal
                                            approximately 0.90% of the initial aggregate Certificate Principal
                                            Balance of all of the Pool 1 Certificates and approximately 22.50% of
                                            the initial aggregate Certificate Principal Balance of all of the
                                            Pool 1 Junior Certificates.
 
                                            The Class 1-A6 Certificates will not have a Class Certificate
                                            Principal Balance and will bear interest at the rate described
                                            herein.
 
            POOL 2........................  The Pool 2 Certificates will consist of twelve classes of senior
                                            certificates (the 'Class 2-A1, Class 2-A2, and so forth in
                                            consecutive numerical sub-designation through Class 2-A9, Class 2-PO,
                                            Class 2-R and Class 2-RL Certificates,' and, collectively, the 'Pool
                                            2 Senior Certificates') and six classes of subordinated certificates
                                            (the 'Class 2-M, Class 2-B1, Class 2-B2, Class 2-B3, Class 2-B4 and
                                            Class 2-B5 Certificates,' and, collectively, the 'Pool 2 Junior
                                            Certificates'). The Pool 2 Junior Certificates are subordinate in
                                            right of distribution to the Pool 2 Senior Certificates to the extent
                                            described herein. The initial aggregate Certificate Principal Balance
                                            of the Pool 2 Junior Certificates will equal approximately 4.00% of
                                            the initial aggregate Certificate Principal Balance of all of the
                                            Pool 2 Certificates.
 
                                            The Class 2-M Certificates are subordinate to the Pool 2 Senior
                                            Certificates to the extent described herein. The Class 2-B1, Class
                                            2-B2, Class 2-B3, Class 2-B4 and Class 2-B5 Certificates
                                            (collectively, the 'Class 2-B Certificates') are subordinate to the
                                            Pool 2 Senior Certificates and the Class 2-M Certificates, and each
                                            Class of Class 2-B Certificates is subordinate to the Class or
                                            Classes of Class 2-B Certificates having a lower numerical
                                            designation (i.e., the Class 2-B5 Certificates are subordinate to the
                                            Class 2-B4 Certificates, the Class 2-B4 Certificates are subordinate
                                            to the Class 2-B3 Certificates, and so on) to the extent described
                                            herein. The initial aggregate Certificate Principal Balance of the
                                            Class 2-B3, Class 2-B4 and Class 2-B5 Certificates will equal
                                            approximately 1.00% of the initial aggregate Certificate Principal
                                            Balance of all of the Pool 2 Certificates and approximately 25.01% of
                                            the initial aggregate Certificate Principal Balance of all of the
                                            Pool 2 Junior Certificates.
 
                                            The Class 2-A3 Certificates will not have a Class Certificate
                                            Principal Balance and will bear interest at the rate described
                                            herein.
</TABLE>
 
                                      S-4
<PAGE>
 
<TABLE>
<S>                                         <C>
            POOL 3........................  The Pool 3 Certificates will consist of six classes of senior
                                            certificates (the 'Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A4,
                                            Class 3-PO and Class 3-R Certificates,' and, collectively, the 'Pool
                                            3 Senior Certificates') and six classes of subordinated certificates
                                            (the 'Class 3-M, Class 3-B1, Class 3-B2, Class 3-B3, Class 3-B4 and
                                            Class 3-B5 Certificates,' and collectively, the 'Pool 3 Junior
                                            Certificates'). The Pool 3 Junior Certificates are subordinate in
                                            right of distribution to the Pool 3 Senior Certificates to the extent
                                            described herein. The initial aggregate Certificate Principal Balance
                                            of the Pool 3 Junior Certificates will equal approximately 2.00% of
                                            the initial aggregate Certificate Principal Balance of all the Pool 3
                                            Certificates.
 
                                            The Class 3-M Certificates are subordinate to the Pool 3 Senior
                                            Certificates to the extent described herein. The Class 3-B1, Class
                                            3-B2, Class 3-B3, Class 3-B4 and Class 3-B5 Certificates
                                            (collectively, the 'Class 3-B Certificates') are subordinate to the
                                            Pool 3 Senior Certificates and the Class 3-M Certificates, and each
                                            Class of Class 3-B Certificates is subordinate to the Class or
                                            Classes of Class 3-B Certificates having a lower numerical
                                            designation (i.e., the Class 3-B5 Certificates are subordinate to the
                                            Class 3-B4 Certificates, the Class 3-B4 Certificates are subordinate
                                            to the Class 3-B3 Certificates, and so on) to the extent described
                                            herein. The initial aggregate Certificate Principal Balance of the
                                            Class 3-B3, Class 3-B4 and Class 3-B5 Certificates will equal
                                            approximately 0.75% of the initial aggregate Certificate Principal
                                            Balance of all of the Certificates and approximately 37.50% of the
                                            initial aggregate Certificate Principal Balance of all of the Pool 3
                                            Junior Certificates.
 
            POOL 4........................  The Pool 4 Certificates will consist of fifteen classes of senior
                                            certificates (the 'Class 4-A1, Class 4-A2, and so forth in
                                            consecutive numerical sub-designation through Class 4-A13, Class 4-PO
                                            and Class 4-R Certificates,' and, collectively, the 'Pool 4 Senior
                                            Certificates' and, with the Pool 1 Senior Certificates, Pool 2 Senior
                                            Certificates and Pool 3 Senior Certificates, the 'Senior
                                            Certificates') and six classes of subordinated certificates (the
                                            'Class 4-M, Class 4-B1, Class 4-B2, Class 4-B3, Class 4-B4 and Class
                                            4-B5 Certificates,' and, collectively, the 'Pool 4 Junior
                                            Certificates' and, with the Pool 1 Junior Certificates, Pool 2 Junior
                                            Certificates and Pool 3 Junior Certificates, the 'Junior
                                            Certificates'). The Pool 4 Junior Certificates are subordinate in
                                            right of distribution to the Pool 4 Senior Certificates to the extent
                                            described herein. The initial aggregate Certificate Principal Balance
                                            of the Pool 4 Junior Certificates will equal approximately 4.00% of
                                            the initial aggregate Certificate Principal Balance of all of the
                                            Pool 4 Certificates.
 
                                            The Class 4-M Certificates are subordinate to the Pool 4 Senior
                                            Certificates to the extent described herein. The Class 4-B1, Class
                                            4-B2, Class 4-B3, Class 4-B4 and Class 4-B5 Certificates
                                            (collectively, the 'Class 4-B Certificates' and, with the Class 1-B,
                                            Class 2-B and Class 3-B Certificates, the 'Class B Certificates') are
                                            subordinate to the Pool 4 Senior Certificates and the Class 4-M
                                            Certificates, and each Class of Class 4-B Certificates is subordinate
                                            to the Class or Classes of Class 4-B Certificates having a lower
</TABLE>
 
                                      S-5
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            numerical designation (i.e., the Class 4-B5 Certificates are
                                            subordinate to the Class 4-B4 Certificates, the Class 4-B4
                                            Certificates are subordinate to the Class 4-B3 Certificates, and so
                                            on) to the extent described herein. The initial aggregate Certificate
                                            Principal Balance of the Class 4-B3, Class 4-B4 and Class 4-B5
                                            Certificates will equal approximately 0.90% of the initial aggregate
                                            Certificate Principal Balance of all of the Pool 4 Certificates and
                                            approximately 22.50% of the initial aggregate Certificate Principal
                                            Balance of all of the Pool 4 Junior Certificates.
 
CERTIFICATES NOT OFFERED HEREBY...........  The Class 1-PO, Class 1-B3, Class 1-B4, Class 1-B5, Class 2-PO, Class
                                            2-B3, Class 2-B4, Class 2-B5, Class 3-PO, Class 3-B3, Class 3-B4,
                                            Class 3-B5, Class 4-PO, Class 4-B3, Class 4-B4 and Class 4-B5
                                            Certificates are not offered hereby.
 
                                            The Class 1-PO, Class 2-PO, Class 3-PO and Class 4-PO Certificates
                                            (each, a 'Class PO Certificate') will not bear interest. The Company
                                            will initially retain and may subsequently transfer the Class 1-PO,
                                            Class 2-PO, Class 3-PO and Class 4-PO Certificates.
 
FORMS OF CERTIFICATES, MINIMUM
  DENOMINATIONS...........................  The Classes of Certificates offered hereby, other than the Residual
                                            Certificates (as defined below), will each be registered as a single
                                            certificate held by a nominee of The Depository Trust Company (the
                                            'Depository'), and beneficial interests therein will be held by
                                            investors through the book-entry facilities of the Depository, as
                                            described herein, in the minimum denominations in Certificate
                                            Principal Balance or Notional Principal Balance, as the case may be,
                                            set forth in the table below. The Class 1-R, Class 1-RL, Class 2-R,
                                            Class 2-RL, Class 3-R and Class 4-R Certificates (together, the
                                            'Residual Certificates') will each be issued in certificated form as
                                            a single Certificate representing the entire Class Certificate
                                            Principal Balance thereof.
</TABLE>

<TABLE>
<CAPTION>
                                                                MINIMUM                          MINIMUM
                                                              DENOMINATION                     DENOMINATION
                                                              ------------                     ------------
<S>                                           <C>             <C>              <C>             <C>              <C>
                                              Class 1-A1        $ 25,000       Class 2-A1        $ 25,000       Class 4-A1
                                              Class 1-A2          25,000       Class 2-A2          25,000       Class 4-A2
                                              Class 1-A3          25,000       Class 2-A3         139,000       Class 4-A3
                                              Class 1-A4          25,000       Class 2-A4          25,000       Class 4-A4
                                              Class 1-A5          25,000       Class 2-A5          25,000       Class 4-A5
                                              Class 1-A6         121,000       Class 2-A6          25,000       Class 4-A6
                                              Class 1-A7          25,000       Class 2-A7          25,000       Class 4-A7
                                              Class 1-A8          25,000       Class 2-A8          25,000       Class 4-A8
                                              Class 1-A9          25,000       Class 2-A9          25,000       Class 4-A9
                                              Class 1-A10         25,000       Class 2-M          100,000       Class 4-A10
                                              Class 1-A11         25,000       Class 2-B1         100,000       Class 4-A11
                                              Class 1-A12         25,000       Class 2-B2         100,000       Class 4-A12
                                              Class 1-A13         25,000       Class 3-A1          25,000       Class 4-A13
                                              Class 1-A14         25,000       Class 3-A2          25,000       Class 4-M
                                              Class 1-M          100,000       Class 3-A3          25,000       Class 4-B1
                                              Class 1-B1         100,000       Class 3-A4          25,000       Class 4-B2
                                              Class 1-B2         100,000       Class 3-M          100,000
                                                                               Class 3-B1         100,000
                                                                               Class 3-B2         100,000
 
<CAPTION>
                                              MINIMUM
                                            DENOMINATION
                                            ------------
<S>                                         <C>
                                              $ 25,000
                                                25,000
                                                25,000
                                                25,000
                                                25,000
                                                25,000
                                                 1,000
                                                 1,000
                                                 1,000
                                                 1,000
                                                 1,000
                                                 1,000
                                                 1,000
                                               100,000
                                               100,000
                                               100,000
</TABLE>
 
<TABLE>
<S>                                         <C>
                                            In each case, Certificates in excess of the minimum denominations
                                            will be issued in integral multiples of $1,000.
 
SELLER AND SERVICER.......................  GE Capital Mortgage Services, Inc., a New Jersey corporation (the
                                            'Company'). See 'GE Capital Mortgage Services, Inc.' and 'The Pooling
                                            and Servicing Agreement--Servicing Arrangement with Respect to the
                                            Mortgage Loans' herein.
</TABLE>
 
                                      S-6
<PAGE>
 
<TABLE>
<S>                                         <C>
TRUSTEE...................................  State Street Bank and Trust Company (the 'Trustee'), a Massachusetts
                                            banking corporation. See 'The Pooling and Servicing
                                            Agreement--Trustee' herein.
 
CUT-OFF DATE..............................  July 1, 1998.
 
CLOSING DATE..............................  On or about July 30, 1998.
 
MORTGAGE POOLS............................  Each Certificate Group will represent the entire beneficial ownership
                                            interest in a distinct trust fund (each, a 'Trust Fund'). The assets
                                            of each Trust Fund will consist primarily of a distinct pool ('Pool
                                            1,' 'Pool 2,' 'Pool 3' and 'Pool 4', respectively, and each a
                                            'Mortgage Pool') of fixed-rate, fully-amortizing, conventional
                                            Mortgage Loans secured by first liens on one to four-family
                                            residential properties (the 'Mortgaged Properties'). The Mortgage
                                            Loans will have original terms to maturity of 20 to 30 years (in the
                                            case of Pool 1, Pool 2 and Pool 4), and 10 to 15 years (in the case
                                            of Pool 3). The Pool 1 Mortgage Loans, Pool 2 Mortgage Loans, Pool 3
                                            Mortgage Loans and Pool 4 Mortgage Loans (each as defined herein)
                                            will have an aggregate Scheduled Principal Balance (as defined
                                            herein) as of the Cut-off Date, after deducting payments of principal
                                            due on or before such date, of approximately $400,661,896,
                                            $200,222,314, $176,002,356 and $201,364,346, respectively, in each
                                            case subject to the variance described herein. See 'Pool 1 Annex--The
                                            Pool 1 Mortgage Loans and the Pool 1 Certificates', 'Pool 2
                                            Annex--The Pool 2 Mortgage Loans and the Pool 2 Certificates,' 'Pool
                                            3 Annex--The Pool 3 Mortgage Loans and the Pool 3 Certificates,' and
                                            'Pool 4 Annex-- The Pool 4 Mortgage Loans and the Pool 4
                                            Certificates'.
 
DESCRIPTION OF THE CERTIFICATES...........  The Certificates will be issued pursuant to a single Pooling and
                                            Servicing Agreement, to be dated as of the Cut-off Date (the
                                            'Agreement'), between the Company and the Trustee. To the extent
                                            funds are available therefor in the Certificate Account,
                                            distributions on the Certificates will be made on the 25th day of
                                            each month or, if such 25th day is not a business day, on the
                                            succeeding business day (each, a 'Distribution Date'), commencing in
                                            August 1998, to holders of record on the close of business on the
                                            last business day of the month preceding the month of such
                                            Distribution Date (the 'Record Date').
 
DISTRIBUTIONS ON THE CERTIFICATES.........  General.  Distributions in respect of the Pool 1, Pool 2, Pool 3 or
                                            Pool 4 Certificates, as the case may be, will be made solely from
                                            payments and other collections received in respect of the related
                                            Trust Fund. The Trust Funds, including the related Mortgage Pools,
                                            are not cross-collateralized. The Pool 1, Pool 2, Pool 3 and Pool 4
                                            Available Funds (each as defined herein) will be allocated among the
                                            Classes of the related Certificate Group offered hereby in the manner
                                            set forth in the respective annexes. See 'Pool 1 Annex--
                                            Distributions on the Pool 1 Certificates--Allocation of Pool 1
                                            Available Funds,' 'Pool 2 Annex--Distributions on the Pool 2
                                            Certificates--Allocation of Pool 2 Available Funds,' 'Pool 3
                                            Annex--Distributions on the Pool 3 Certificates--Allocation of Pool 3
                                            Available Funds' and 'Pool 4 Annex--Distributions on the Pool 4
                                            Certificates--Allocation of Pool 4 Available Funds' herein.
 
                                            On each Distribution Date, (i) the Senior Certificates relating to a
                                            Mortgage Pool will be entitled to receive all amounts distributable
                                            to
</TABLE>
 
                                      S-7
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            them for such Distribution Date before any distributions are made to
                                            the related Junior Certificates on such date and (ii) each Class of
                                            Junior Certificates relating to a Mortgage Pool will be entitled to
                                            receive all amounts distributable to them for such Distribution Date
                                            before any distributions are made on such date on any Class of
                                            related Junior Certificates subordinate thereto. The Available Funds
                                            (as defined herein) relating to a Mortgage Pool for each Distribution
                                            Date will be allocated first, to pay interest due the holders of the
                                            related Senior Certificates and then to reduce the Class Certificate
                                            Principal Balances of the related Senior Certificates; second, to pay
                                            the related Class PO Deferred Amount (as defined herein) for such
                                            Distribution Date to holders of the related Class PO Certificates,
                                            but only from amounts that would otherwise be distributable on such
                                            Distribution Date on the Junior Certificates in respect of the
                                            related Mortgage Pool; and third, to pay interest and principal due
                                            the holders of the Junior Certificates in respect of the related
                                            Mortgage Pool in order of priority among the Classes thereof. No
                                            distribution of interest or principal will be made on any Class of
                                            Junior Certificates of a Certificate Group on any Distribution Date
                                            until all distributions of interest and principal have been made on
                                            such date on each Class of Certificates of such Certificate Group
                                            having a higher priority and the related Class PO Deferred Amount for
                                            such Distribution Date has, subject to the limitation described
                                            above, been paid.
 
                                            Interest.  Interest will accrue on each Class of the Certificates
                                            offered hereby, other than the Class 1-A8, Class 1-A9, Class 1-A11,
                                            Class 1-A12, Class 2-A4, Class 2-A5, Class 2-A6, Class 4-A2 and Class
                                            4-A3 Certificates (together, the 'Floating Rate Certificates'), at
                                            the respective fixed Certificate Interest Rates set forth on the
                                            cover hereof during each applicable Interest Accrual Period (as
                                            defined below). Interest will accrue on the Floating Rate
                                            Certificates at the applicable floating Certificate Interest Rate
                                            described on the cover hereof during each applicable Interest Accrual
                                            Period.
 
                                            On each Distribution Date, interest will be distributable on each
                                            Class of Pool 1, Pool 2, Pool 3 and Pool 4 Certificates (other than
                                            the Class 1-A10, Class 1-A14, Class 2-A7 and Class 2-A8 Certificates
                                            through their respective Accretion Termination Dates), as the case
                                            may be, offered hereby solely from the Pool 1 Available Funds, Pool 2
                                            Available Funds, Pool 3 Available Funds and Pool 4 Available Funds,
                                            respectively, for such Distribution Date, in each case in an
                                            aggregate amount equal to the Accrued Certificate Interest (as
                                            defined below) for such Class on such Distribution Date, plus any
                                            Accrued Certificate Interest thereon remaining undistributed from
                                            previous Distribution Dates. On each Distribution Date through the
                                            Accretion Termination Date for each of the Class 1-A10, Class 1-A14,
                                            Class 2-A7 and Class 2-A8 Certificates (each, an 'Accrual Class' and
                                            together, the 'Accrual Certificates'), interest accrued on such
                                            Certificates will not be distributed on such Certificates but will
                                            instead be added to the Class Certificate Principal Balances thereof,
                                            except as described herein. On each Distribution Date after the
                                            Accretion Termination Date for an Accrual Class (and, in some
                                            circumstances, on such
</TABLE>
 
                                      S-8
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            date), interest will be distributable on such Class and will not be
                                            added to the Class Certificate Principal Balance thereof.
 
                                            The 'Interest Accrual Period' for each Class of Certificates entitled
                                            to distributions of interest other than the Class 1-A8, Class 1-A9,
                                            Class 2-A4, Class 2-A5 and Class 2-A6 Certificates will be the one-
                                            month period ending on the last day of the month preceding the month
                                            in which a Distribution Date occurs. For the Class 1-A8, Class 1-A9,
                                            Class 2-A4, Class 2-A5 and Class 2-A6 Certificates, the 'Interest
                                            Accrual Period' will be the one-month period commencing on the 25th
                                            day of the month preceding the month in which a Distribution Date
                                            occurs and ending on the 24th day of the month of such Distribution
                                            Date.
 
                                            The 'Accrued Certificate Interest' for any Certificate (other than
                                            the Class PO Certificates) for any Distribution Date will equal the
                                            interest accrued during the related Interest Accrual Period at the
                                            applicable Certificate Interest Rate on the Certificate Principal
                                            Balance (or, in the case of the Class 1-A6 and Class 2-A3
                                            Certificates, the Notional Principal Balance) of such Certificate
                                            immediately prior to such Distribution Date, less such Certificate's
                                            share of any Net Interest Shortfall, the interest portion of any
                                            Excess Losses allocable to Certificateholders of the related
                                            Certificate Group through the related Cross-Over Date and, after the
                                            related Cross-Over Date, the interest portion of any Realized Losses
                                            (as each such term is defined herein) allocable to Certificateholders
                                            of the related Certificate Group, in each case in respect of the
                                            related Mortgage Pool.
 
                                            The shortfall or losses described in the preceding paragraph will be
                                            allocated among the related Certificates (other than the Class PO
                                            Certificates) in proportion to the amount of Accrued Certificate
                                            Interest that would have been allocated thereto in the absence of
                                            such shortfall or losses, and will be allocated without regard to the
                                            relative priority of the related Certificates. Interest will be
                                            calculated on the Certificates on the basis of a 360-day year
                                            consisting of twelve 30-day months.
 
                                            Excess Losses with respect to a Mortgage Pool consist of all
                                            Bankruptcy Losses, Fraud Losses and Special Hazard Losses (each a
                                            type of Realized Loss) occurring after the Bankruptcy Coverage
                                            Termination Date, the Fraud Coverage Termination Date and the Special
                                            Hazard Termination Date, respectively, in each case in respect of the
                                            related Mortgage Pool, as more fully described herein.
 
                                            The aggregate 'Notional Principal Balance' of the Class 1-A6
                                            Certificates as of any Distribution Date will equal the sum of (a)
                                            approximately 3.703703704% of the Class Certificate Principal Balance
                                            of the Class 1-A1 Certificates on such Distribution Date, (b)
                                            approximately 2.222222222% of the Class Certificate Principal Balance
                                            of the Class 1-A2 Certificates on such Distribution Date and (c)
                                            approximately 0.740740741% of the Class Certificate Principal Balance
                                            of the Class 1-A3 Certificates on such Distribution Date. The
                                            aggregate Notional Principal Balance of the Class 2-A3 Certificates
                                            as of any Distribution Date will equal the sum of (a) approximately
                                            2.2222222222% of the Class Certificate
</TABLE>
 
                                      S-9
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Principal Balance of the Class 2-A1 Certificates on such Distribution
                                            Date and (b) approximately 2.9629629630% of the Class Certificate
                                            Principal Balance of the Class 2-A2 Certificates on such Distribution
                                            Date.
 
     POOL 1 PRINCIPAL.....................  Principal will be distributable on the Pool 1 Senior Certificates
                                            (other than the Class 1-A6 Certificates) on each Distribution Date in
                                            an aggregate amount equal to the sum of the Pool 1 Senior Optimal
                                            Principal Amount, the Class 1-PO Principal Distribution Amount and
                                            the Pool 1 Accrual Amounts (each as defined herein) for such
                                            Distribution Date, to the extent (except in the case of the Pool 1
                                            Accrual Amounts) of the Pool 1 Available Funds for such Distribution
                                            Date remaining after distributions of interest are made on the Pool 1
                                            Senior Certificates (other than the Class 1-PO Certificates) on such
                                            date. Subject to such limitation, the Pool 1 Senior Optimal Principal
                                            Amount, the Class 1-PO Principal Distribution Amount and the Pool 1
                                            Accrual Amounts for such Distribution Date will be allocated among
                                            the Pool 1 Senior Certificates in the manner described herein.
 
                                            Principal will be distributable on each Class of Pool 1 Junior
                                            Certificates on each Distribution Date in an aggregate amount equal
                                            to such Class's Allocable Share (as defined herein) for such
                                            Distribution Date to the extent of the Pool 1 Available Funds
                                            remaining after (i) distributions of interest and principal have been
                                            made on each Pool 1 Senior Certificate to the extent entitled
                                            thereto, (ii) the Class 1-PO Deferred Amount (as defined herein) for
                                            such Distribution Date has, subject to the limitations described
                                            herein, been distributed in respect of the Class 1-PO Certificates,
                                            (iii) distributions of interest and principal have been made on each
                                            Class of Pool 1 Junior Certificates, if any, ranking prior to such
                                            Class of Pool 1 Junior Certificates and (iv) distributions of
                                            interest have been made on such Class of Pool 1 Junior Certificates.
                                            Distributions of principal of a Class of Pool 1 Certificates will be
                                            made on a pro rata basis among all outstanding Certificates of such
                                            Class. See 'Pool 1 Annex--Distributions on the Pool 1 Certificates'
                                            herein.
 
                                            The Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4 and Class 1-A5
                                            Certificates (the 'Pool 1 PAC Certificates') are planned amortization
                                            class Certificates. The Class 1-A8 and Class 1-A9 Certificates (the
                                            'Pool 1 TAC Certificates') are targeted amortization class
                                            Certificates. The Class 1-A7, Class 1-A13 and Class 1-A14
                                            Certificates (the 'Pool 1 Scheduled Certificates') are scheduled
                                            amortization class Certificates. Principal distributions on the Pool
                                            1 PAC Certificates, Pool 1 TAC Certificates and the Pool 1 Scheduled
                                            Certificates will be made by reference to principal balance
                                            schedules, as described herein. The Pool 1 Scheduled Certificates,
                                            the Pool 1 TAC Certificates and the Class 1-A10, Class 1-A11 and
                                            Class 1-A12 Certificates support the principal payment stability of
                                            the Pool 1 PAC Certificates. The Class 1-A10 Certificates support the
                                            principal payment stability of the Pool 1 TAC Certificates. The Class
                                            1-A11 and Class 1-A12 Certificates support the principal payment
                                            stability of the Pool 1 Scheduled Certificates, and the Class 1-A14
                                            Certificates support the principal payment stability of the Class
                                            1-A13 Certificates. See 'Pool 1
</TABLE>
 
                                      S-10
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Annex--Pool 1 Yield and Weighted Average Life Considerations--
                                            Weighted Average Lives of the Pool 1 Certificates--Pool 1 TAC
                                            Certificates' and '--Pool 1 Support Certificates.'
 
                                            The principal portion of any Excess Losses in respect of Pool 1 will
                                            be allocated pro rata among all of the outstanding Pool 1
                                            Certificates, as described herein.
 
                                            Class 1-PO Deferred Amount.  On each Distribution Date, the
                                            applicable PO Percentage (as defined herein) of the principal portion
                                            of any Realized Loss (other than a Debt Service Reduction) in respect
                                            of a Pool 1 Discount Mortgage Loan will be allocated to the Class
                                            1-PO Certificates. See 'Pool 1 Annex--Allocation of Realized Losses
                                            on the Pool 1 Certificates.' On each Distribution Date through the
                                            Pool 1 Cross-Over Date, the Class 1-PO Certificates will be entitled
                                            to receive, to the extent of Pool 1 Available Funds remaining after
                                            distributions of interest and principal on the Pool 1 Senior
                                            Certificates have been made on such Distribution Date, any Class 1-PO
                                            Deferred Amount for such Distribution Date, provided, however, that
                                            distributions in respect of the Class 1-PO Deferred Amount on any
                                            Distribution Date will not exceed the Junior Optimal Principal Amount
                                            for Pool 1 for such date. Distributions in respect of the Class 1-PO
                                            Deferred Amount will not reduce the Class Certificate Principal
                                            Balance of the Class 1-PO Certificates. The 'Class 1-PO Deferred
                                            Amount' means, as to each Distribution Date through the Pool 1
                                            Cross-Over Date, the aggregate of all amounts allocable on such date
                                            to the Class 1-PO Certificates in respect of the principal portion of
                                            Realized Losses (other than Excess Losses) in respect of the Pool 1
                                            Discount Mortgage Loans and all amounts previously allocated in
                                            respect of such losses to the Class 1-PO Certificates and not
                                            distributed thereto on prior Distribution Dates.
 
     POOL 2 PRINCIPAL.....................  Principal will be distributable on the Pool 2 Senior Certificates
                                            (other than the Class 2-A3 Certificates) on each Distribution Date in
                                            an aggregate amount equal to the sum of the Pool 2 Senior Optimal
                                            Principal Amount, the Class 2-PO Principal Distribution Amount and
                                            the Pool 2 Accrual Amounts (each as defined herein) for such
                                            Distribution Date, to the extent (except in the case of the Pool 2
                                            Accrual Amounts) of the Pool 2 Available Funds for such Distribution
                                            Date remaining after distributions of interest are made on the Pool 2
                                            Senior Certificates (other than the Class 2-PO Certificates) on such
                                            date. Subject to such limitation, the Pool 2 Senior Optimal Principal
                                            Amount, the Class 2-PO Principal Distribution Amount and the Pool 2
                                            Accrual Amounts for such Distribution Date will be allocated among
                                            the Pool 2 Senior Certificates in the manner described herein.
 
                                            The Class 2-A9 Certificates will not receive any distributions in
                                            respect of principal (including scheduled payments, prepayments and
                                            other unscheduled recoveries of principal) during the first five
                                            years after the Cut-off Date, except as otherwise described herein on
                                            or following the earlier of the Pool 2 Group I Final Distribution
                                            Date and the Pool 2 Cross-Over Date (each as defined herein).
</TABLE>
 
                                      S-11
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Principal will be distributable on each Class of Pool 2 Junior
                                            Certificates on each Distribution Date in an aggregate amount equal
                                            to such Class's Allocable Share for such Distribution Date to the
                                            extent of the Pool 2 Available Funds remaining after (i)
                                            distributions of interest and principal have been made on each Pool 2
                                            Senior Certificate to the extent entitled thereto, (ii) the Class
                                            2-PO Deferred Amount (as defined herein) for such Distribution Date
                                            has, subject to the limitations described herein, been distributed in
                                            respect of the Class 2-PO Certificates, (iii) distributions of
                                            interest and principal have been made on each Class of Pool 2 Junior
                                            Certificates, if any, ranking prior to such Class of Pool 2 Junior
                                            Certificates and (iv) distributions of interest have been made on
                                            such Class of Pool 2 Junior Certificates. Distributions of principal
                                            on a Class of Pool 2 Certificates will be made on a pro rata basis
                                            among all outstanding Certificates of such Class. See 'Pool 2
                                            Annex--Distributions on the Pool 2 Certificates' herein.
 
                                            The Class 2-A1 and Class 2-A2 Certificates (together, the 'Pool 2 PAC
                                            Certificates') are planned amortization class Certificates. The Class
                                            2-A4, Class 2-A5 and Class 2-A6 Certificates (the 'Pool 2 TAC
                                            Certificates') are targeted amortization class Certificates.
                                            Principal distributions on the Pool 2 TAC Certificates and Pool 2 PAC
                                            Certificates will be made by reference to principal balance
                                            schedules, as described herein. The Pool 2 TAC Certificates and the
                                            Class 2-A7 and Class 2-A8 Certificates support the principal payment
                                            stability of the Pool 2 PAC Certificates. The Class 2-A7 Certificates
                                            support the principal payment stability of the Pool 2 TAC
                                            Certificates. See 'Pool 2 Annex--Pool 2 Yield and Weighted Average
                                            Life Considerations--Weighted Average Lives of the Pool 2
                                            Certificates--Pool 2 TAC Certificates,' and '--Pool 2 Support
                                            Certificates.'
 
                                            The principal portion of any Excess Losses in respect of Pool 2 will
                                            be allocated pro rata among all of the outstanding Pool 2
                                            Certificates, as described herein.
 
                                            Class 2-PO Deferred Amount.  On each Distribution Date, the
                                            applicable PO Percentage of the principal portion of any Realized
                                            Loss (other than a Debt Service Reduction) in respect of a Pool 2
                                            Discount Mortgage Loan (as defined herein) will be allocated to the
                                            Class 2-PO Certificates. See 'Pool 2 Annex--Allocation of Realized
                                            Losses on the Pool 2 Certificates.' On each Distribution Date through
                                            the Pool 2 Cross-Over Date, the Class 2-PO Certificates will be
                                            entitled to receive, to the extent of Pool 2 Available Funds
                                            remaining after distributions of interest and principal on the Pool 2
                                            Senior Certificates have been made on such Distribution Date, any
                                            Class 2-PO Deferred Amount for such Distribution Date, provided,
                                            however, that distributions in respect of the Class 2-PO Deferred
                                            Amount on any Distribution Date will not exceed the Junior Optimal
                                            Principal Amount for Pool 2 for such date. Distributions in respect
                                            of the Class 2-PO Deferred Amount will not reduce the Class
                                            Certificate Principal Balance of the Class 2-PO Certificates. The
                                            'Class 2-PO Deferred Amount' means, as to each Distribution Date
                                            through the Pool 2 Cross-Over Date, the aggregate of all amounts
                                            allocable on such date to the
</TABLE>
 
                                      S-12
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Class 2-PO Certificates in respect of the principal portion of
                                            Realized Losses (other than Excess Losses) in respect of the Pool 2
                                            Discount Mortgage Loans and all amounts previously allocated in
                                            respect of such losses to the Class 2-PO Certificates and not
                                            distributed thereto on prior Distribution Dates.
 
     POOL 3 PRINCIPAL.....................  Principal will be distributable on the Pool 3 Senior Certificates on
                                            each Distribution Date in an aggregate amount equal to the sum of the
                                            Pool 3 Senior Optimal Principal Amount and the Class 3-PO Principal
                                            Distribution Amount (each as defined herein) for such Distribution
                                            Date, to the extent of the Pool 3 Available Funds for such
                                            Distribution Date remaining after distributions of interest are made
                                            on the Pool 3 Senior Certificates (other than the Class 3-PO
                                            Certificates) on such date. Subject to such limitations, the Pool 3
                                            Senior Optimal Principal Amount and the Class 3-PO Principal
                                            Distribution Amount will be allocated among the Pool 3 Senior
                                            Certificates in the manner described herein.
 
                                            The Class 3-A3 Certificates will not receive any distributions in
                                            respect of principal prepayments and certain other unscheduled
                                            recoveries of principal during the first five years after the Cut-off
                                            Date, except as otherwise described herein on or following the
                                            earlier of the Pool 3 Group I Final Distribution Date or the Pool 3
                                            Cross-Over Date.
 
                                            Principal will be distributable on each Class of Pool 3 Junior
                                            Certificates on each Distribution Date in an aggregate amount equal
                                            to such Class's Allocable Share for such Distribution Date to the
                                            extent of the Pool 3 Available Funds remaining after (i)
                                            distributions of interest and principal have been made on each Pool 3
                                            Senior Certificate entitled thereto, (ii) the Class 3-PO Deferred
                                            Amount for such Distribution Date has, subject to the limitations
                                            described herein, been distributed in respect of the Class 3-PO
                                            Certificates, (iii) distributions of interest and principal have been
                                            made on each Class of Pool 3 Junior Certificates, if any, ranking
                                            prior to such Class of Pool 3 Junior Certificates and (iv)
                                            distributions of interest have been made on such Class of Pool 3
                                            Junior Certificates. Distributions of principal of a Class of Pool 3
                                            Certificates will be made on a pro rata basis among all outstanding
                                            Certificates of such Class. See 'Pool 3 Annex--Distributions on the
                                            Pool 3 Certificates' herein.
 
                                            The principal portion of any Excess Losses in respect of Pool 3 will
                                            be allocated pro rata among all the outstanding Pool 3 Certificates,
                                            as described herein.
 
                                            Class 3-PO Deferred Amount.  On each Distribution Date, the
                                            applicable PO Percentage (as defined herein) of the principal portion
                                            of any Realized Loss (other than a Debt Service Reduction) in respect
                                            of a Pool 3 Discount Mortgage Loan (as defined herein) will be
                                            allocated to the Class 3-PO Certificates. See 'Pool 3 Annex--
                                            Allocation of Realized Losses on the Pool 3 Certificates.' On each
                                            Distribution Date through the Pool 3 Cross-Over Date (as defined
                                            herein), the Class 3-PO Certificates will be entitled to receive, to
                                            the extent of Pool 3 Available Funds remaining after distributions of
                                            interest and principal on the Pool 3 Senior Certificates have been
</TABLE>
 
                                      S-13
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            made on such Distribution Date, any Class 3-PO Deferred Amount for
                                            such Distribution Date, provided, however, that distributions in
                                            respect of the Class 3-PO Deferred Amount on any Distribution Date
                                            will not exceed the Junior Optimal Principal Amount for Pool 3 for
                                            such date. Distributions in respect of the Class 3-PO Deferred Amount
                                            will not reduce the Class Certificate Principal Balance of the Class
                                            3-PO Certificates. The 'Class 3-PO Deferred Amount' means, as to each
                                            Distribution Date through the Pool 3 Cross-Over Date, the aggregate
                                            of all amounts allocable on such date to the Class 3-PO Certificates
                                            in respect of the principal portion of Realized Losses (other than
                                            Excess Losses) in respect of the Pool 3 Discount Mortgage Loans and
                                            all amounts previously allocated in respect of such losses to the
                                            Class 3-PO Certificates and not distributed thereto on prior
                                            Distribution Dates.
 
     POOL 4 PRINCIPAL.....................  Principal will be distributable on the Pool 4 Senior Certificates on
                                            each Distribution Date in an aggregate amount equal to the sum of the
                                            Pool 4 Senior Optimal Principal Amount and the Class 4-PO Principal
                                            Distribution Amount (each as defined herein) for such Distribution
                                            Date, to the extent of the Pool 4 Available Funds for such
                                            Distribution Date remaining after distributions of interest are made
                                            on the Pool 4 Senior Certificates (other than the Class 4-PO
                                            Certificates) on such date. Subject to such limitation, the Pool 4
                                            Senior Optimal Principal Amount and the Class 4-PO Principal
                                            Distribution Amount for such Distribution Date will be allocated
                                            among the Pool 4 Senior Certificates in the manner described herein.
 
                                            The Class 4-A4 Certificates will not receive any distributions in
                                            respect of principal (including scheduled payments, prepayments and
                                            other unscheduled recoveries of principal) during the first five
                                            years after the Cut-off Date, except as otherwise described herein on
                                            or following the earlier of the Pool 4 Group I Final Distribution
                                            Date and the Pool 4 Cross-Over Date (each as defined herein).
 
                                            Principal will be distributable on each Class of Pool 4 Junior
                                            Certificates on each Distribution Date in an aggregate amount equal
                                            to such Class's Allocable Share (as defined herein) for such
                                            Distribution Date to the extent of the Pool 4 Available Funds
                                            remaining after (i) distributions of interest and principal have been
                                            made on each Pool 4 Senior Certificate to the extent entitled
                                            thereto, (ii) the Class 4-PO Deferred Amount (as defined herein) for
                                            such Distribution Date has, subject to the limitations described
                                            herein, been distributed in respect of the Class 4-PO Certificates,
                                            (iii) distributions of interest and principal have been made on each
                                            Class of Pool 4 Junior Certificates, if any, ranking prior to such
                                            Class of Pool 4 Junior Certificates and (iv) distributions of
                                            interest have been made on such Class of Pool 4 Junior Certificates.
                                            Distributions of principal of a Class of Pool 4 Certificates will be
                                            made on a pro rata basis among all outstanding Certificates of such
                                            Class. See 'Pool 4 Annex--Distributions on the Pool 4 Certificates'
                                            herein.
 
                                            The principal portion of any Excess Losses in respect of Pool 4 will
                                            be allocated pro rata among all of the outstanding Pool 4
                                            Certificates, as described herein.
</TABLE>
 
                                      S-14
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Class 4-PO Deferred Amount.  On each Distribution Date, the
                                            applicable PO Percentage (as defined herein) of the principal portion
                                            of any Realized Loss (other than a Debt Service Reduction) in respect
                                            of a Pool 4 Discount Mortgage Loan will be allocated to the Class
                                            4-PO Certificates. See 'Pool 4 Annex--Allocation of Realized Losses
                                            on the Pool 4 Certificates.' On each Distribution Date through the
                                            Pool 4 Cross-Over Date, the Class 4-PO Certificates will be entitled
                                            to receive, to the extent of Pool 4 Available Funds remaining after
                                            distributions of interest and principal on the Pool 4 Senior
                                            Certificates have been made on such Distribution Date, any Class 4-PO
                                            Deferred Amount for such Distribution Date, provided, however, that
                                            distributions in respect of the Class 4-PO Deferred Amount on any
                                            Distribution Date will not exceed the Junior Optimal Principal Amount
                                            for Pool 4 for such date. Distributions in respect of the Class 4-PO
                                            Deferred Amount will not reduce the Class Certificate Principal
                                            Balance of the Class 4-PO Certificates. The 'Class 4-PO Deferred
                                            Amount' (with the Class 1-PO Deferred Amount, Class 2-PO Deferred
                                            Amount and Class 3-PO Deferred Amount, each a 'Class PO Deferred
                                            Amount') means, as to each Distribution Date through the Pool 4
                                            Cross-Over Date, the aggregate of all amounts allocable on such date
                                            to the Class 4-PO Certificates in respect of the principal portion of
                                            Realized Losses (other than Excess Losses) in respect of the Pool 4
                                            Discount Mortgage Loans and all amounts previously allocated in
                                            respect of such losses to the Class 4-PO Certificates and not
                                            distributed thereto on prior Distribution Dates.
 
ADDITIONAL RIGHTS OF THE RESIDUAL
  CERTIFICATEHOLDERS......................  In addition to distributions of principal and interest payable in
                                            respect of the Residual Certificates, the holders thereof will be
                                            entitled to receive certain amounts, if any, remaining in the related
                                            REMIC after distributions of interest and principal are made on the
                                            Certificates of the related Certificate Group. Such amounts are not
                                            expected to be material. See 'Description of the Certificates--
                                            Additional Rights of the Residual Certificateholders' herein.
 
ADVANCES..................................  The Company will be obligated to advance delinquent installments of
                                            principal and interest (net of the related Servicing Fees) on the
                                            Mortgage Loans included in each Mortgage Pool under certain
                                            circumstances. See 'The Pooling and Servicing Agreement-- Advances'
                                            herein.
 
SUBORDINATION.............................  The rights of the holders of each Class of Junior Certificates
                                            relating to a Mortgage Pool to receive distributions with respect to
                                            the related Mortgage Loans will be subordinate to such rights of the
                                            holders of the related Senior Certificates and of each prior ranking
                                            Class of related Junior Certificates. The subordination of the Junior
                                            Certificates in respect of each Mortgage Pool relative to the related
                                            Senior Certificates is intended to enhance the likelihood of regular
                                            receipt by the holders of such Senior Certificates of the full amount
                                            of the monthly distributions allocable to them, and to afford such
                                            holders protection against losses resulting from the liquidation of
                                            related Mortgage Loans and certain losses resulting from the
                                            bankruptcy of a related borrower (the 'Mortgagor'). The subordination
                                            of each Class of Junior Certificates in respect of each
</TABLE>
 
                                      S-15
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Mortgage Pool (other than the Class 1-M, Class 2-M, Class 3-M and
                                            Class 4-M Certificates) relative to each Class of related Junior
                                            Certificates having a higher ranking is intended to confer a similar
                                            benefit on such higher ranking Classes of Junior Certificates.
                                            However, the degree of protection afforded any Class of Junior
                                            Certificates by such subordination, relative to delinquencies and
                                            losses that might occur on the related Mortgage Pool, is less than
                                            the protection afforded to the related Senior Certificates by virtue
                                            of the subordination of the related Junior Certificates as a whole.
 
                                            As of the date of the initial issuance of the Certificates, the
                                            aggregate Certificate Principal Balance of each of the Pool 1 Junior
                                            Certificates, the Pool 2 Junior Certificates, the Pool 3 Junior
                                            Certificates and the Pool 4 Junior Certificates will equal
                                            approximately 4.00%, 4.00%, 2.00%, and 4.00%, respectively, of each
                                            of the aggregate Certificate Principal Balance of all Pool 1
                                            Certificates, the Pool 2 Certificates, the Pool 3 Certificates and
                                            the Pool 4 Certificates, respectively. As of such date, the aggregate
                                            Certificate Principal Balance of the Class 1-B3, Class 1-B4 and Class
                                            1-B5 Certificates, all of which are subordinate in right of
                                            distribution to the Pool 1 Certificates offered hereby, will equal
                                            approximately 0.90% of the initial aggregate Certificate Principal
                                            Balance of all of the Pool 1 Certificates and approximately 22.50% of
                                            the initial aggregate Certificate Principal Balance of all of the
                                            Pool 1 Junior Certificates. As of such date, the aggregate
                                            Certificate Principal Balance of the Class 2-B3, Class 2-B4 and Class
                                            2-B5 Certificates, all of which are subordinate in right of
                                            distribution to the Pool 2 Certificates offered hereby, will equal
                                            approximately 1.00% of the initial aggregate Certificate Principal
                                            Balance of all of the Pool 2 Certificates and approximately 25.01% of
                                            the initial aggregate Certificate Principal Balance of all of the
                                            Pool 2 Junior Certificates. As of such date, the aggregate
                                            Certificate Principal Balance of the Class 3-B3, Class 3-B4 and Class
                                            3-B5 Certificates, all of which are subordinate in right of
                                            distribution to the Pool 3 Certificates offered hereby, will equal
                                            approximately 0.75% of the initial aggregate Certificate Principal
                                            Balance of all of the Pool 3 Certificates and approximately 37.50% of
                                            the initial aggregate Certificate Principal Balance of all the Pool 3
                                            Junior Certificates. In addition, as of such date, the aggregate
                                            Certificate Principal Balance of the Class 4-B3, Class 4-B4 and Class
                                            4-B5 Certificates, all of which are subordinate in right of
                                            distribution to the Pool 4 Certificates offered hereby, will equal
                                            approximately 0.90% of the initial aggregate Certificate Principal
                                            Balance of all of the Pool 4 Certificates and approximately 22.50% of
                                            the initial aggregate Certificate Principal Balance of all the Pool 4
                                            Junior Certificates.
 
                                            The protection afforded to the holders of Senior Certificates in
                                            respect of each Mortgage Pool by means of the subordination feature
                                            described above will be accomplished (i) by the preferential right of
                                            such holders to receive, prior to any distribution being made on a
                                            Distribution Date in respect of the related Junior Certificates, the
                                            amounts due them on each Distribution Date out of the related
                                            Available Funds and, if necessary, by the right of such holders to
                                            receive future distributions (other than Unanticipated Recoveries (as
</TABLE>
 
                                      S-16
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            defined herein)) with respect to the Mortgage Loans in the related
                                            Mortgage Pool that would otherwise have been payable to the holders
                                            of the related Junior Certificates and (ii) by the allocation of the
                                            applicable Non-PO Percentage (as defined herein) of the principal
                                            portion of any Realized Loss (except as provided herein) with respect
                                            to a Mortgage Loan in the related Mortgage Pool to the related Junior
                                            Certificates, subject to the pro rata allocation of any Excess Loss
                                            as described herein, before such loss is allocated to the related
                                            Senior Certificates (other than the related Class PO Certificates).
 
                                            In addition, in order to extend the period during which the Junior
                                            Certificates in respect of each Mortgage Pool remain available as
                                            credit enhancement for the related Senior Certificates, the entire
                                            amount of the applicable Non-PO Percentage of any principal
                                            prepayments and certain other unscheduled recoveries of principal
                                            with respect to each Mortgage Pool will be allocated to the related
                                            Senior Certificates as a whole (other than the related Class PO
                                            Certificates and, to the extent described herein, the Class 2-A9
                                            Certificates, in the case of Pool 2, the Class 3-A3 Certificates in
                                            the case of Pool 3 and the Class 4-A4 Certificates in the case of
                                            Pool 4) during the first five years after the Cut-off Date (with such
                                            allocation being subject to reduction thereafter as described
                                            herein), except as otherwise described herein. This allocation has
                                            the effect of accelerating the amortization of the related Senior
                                            Certificates as a whole while, in the absence of losses in respect of
                                            the Mortgage Loans in the related Mortgage Pool, increasing the
                                            percentage interest in the principal balance of the Mortgage Loans in
                                            the related Mortgage Pool evidenced by the related Junior
                                            Certificates. See 'Description of the Certificates--Subordination,'
                                            'Pool 1 Annex--Distributions on the Pool 1 Certificates--Principal,'
                                            'Pool 2 Annex--Distributions on the Pool 2 Certificates--Principal,'
                                            'Pool 3 Annex--Distributions on the Pool 3 Certificates-- Principal'
                                            and 'Pool 4 Annex--Distributions on the Pool 4
                                            Certificates--Principal' herein.
 
                                            On each Distribution Date, the holders of any particular Class of
                                            Junior Certificates in respect of each Mortgage Pool, other than the
                                            Class 1-B5, Class 2-B5, Class 3-B5 and Class 4-B5 Certificates, will
                                            have a preferential right to receive the amounts due them on such
                                            Distribution Date out of related Available Funds, prior to any
                                            distribution being made on such date on any Class of related
                                            Certificates ranking junior to such Class. In addition, except as
                                            described herein, the applicable Non-PO Percentage of the principal
                                            portion of any Realized Loss with respect to a Mortgage Loan in the
                                            related Mortgage Pool will be allocated in reduction of the Class
                                            Certificate Principal Balances of the related Junior Certificates in
                                            inverse order of priority of such Certificates, and the applicable PO
                                            Percentage (as defined herein) of any such loss will be similarly
                                            allocated, through the operation of the Class 1-PO Deferred Payment
                                            Writedown Amount, Class 2-PO Deferred Payment Writedown Amount, the
                                            Class 3-PO Deferred Payment Writedown Amount or the Class 4-PO
                                            Deferred Payment Writedown Amount, as the case may be (each as
                                            defined herein and, together, the 'Class
</TABLE>
 
                                      S-17
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            PO Deferred Payment Writedown Amounts'), to the extent distributions
                                            are made in respect of the related Class PO Deferred Amounts. In
                                            order to maintain the relative levels of subordination among the
                                            Junior Certificates in respect of each Mortgage Pool, prepayments and
                                            certain other unscheduled recoveries of principal in respect of the
                                            related Mortgage Loans (which will not be distributable to the
                                            related Junior Certificates for at least the first five years, except
                                            as otherwise described herein on or following the date on which the
                                            Class Certificate Principal Balances of the related Senior
                                            Certificates have been reduced to zero) will not be distributable to
                                            the holders of any related Class of Class B Certificates on any
                                            Distribution Date for which the related Class Prepayment Distribution
                                            Trigger (as defined herein) is not satisfied, except as described
                                            herein. See 'Pool 1 Annex--Distributions on the Pool 1 Certificates,'
                                            'Pool 2 Annex--Distributions on the Pool 2 Certificates,' 'Pool 3
                                            Annex--Distributions on the Pool 3 Certificates' and 'Pool 4
                                            Annex--Distributions on the Pool 4 Certificates' herein.
 
PAYMENT ENTITLEMENT AMONG THE SENIOR
  CERTIFICATES............................  Pool 2.  The entire amount of the applicable Non-PO Percentage of any
                                            payments of principal (including scheduled payments, prepayments and
                                            other unscheduled recoveries of principal) with respect to the Pool 2
                                            Mortgage Loans allocable to the Pool 2 Senior Certificates (other
                                            than the Class 2-A3 and Class 2-PO Certificates) will be allocated to
                                            each such Pool 2 Senior Certificate except the Class 2-A9
                                            Certificates (together, the 'Pool 2 Group I Senior Certificates')
                                            during the first five years after the Cut-off Date (with such
                                            allocation being subject to reduction thereafter as described
                                            herein), except as otherwise described herein on or following the
                                            Pool 2 Group I Final Distribution Date. This allocation prior to the
                                            Pool 2 Group I Final Distribution Date has the effect of accelerating
                                            the amortization of the Pool 2 Group I Senior Certificates while
                                            increasing the percentage interest in the principal balance of the
                                            Pool 2 Mortgage Loans evidenced by the Class 2-A9 Certificates (the
                                            'Pool 2 Group II Senior Certificates'). Notwithstanding the
                                            foregoing, all distributions of principal on the outstanding Pool 2
                                            Senior Certificates (other than the Class 2-PO and Class 2-A3
                                            Certificates) will be made pro rata among such Certificates on each
                                            Distribution Date after the Pool 2 Cross-Over Date. See 'Pool 2
                                            Annex--Distributions on the Pool 2 Certificates--Principal' herein.
 
                                            Pool 3.  The entire amount of the applicable Non-PO Percentage of any
                                            principal prepayments and certain other unscheduled recoveries of
                                            principal with respect to the Pool 3 Mortgage Loans otherwise
                                            allocable to the Class 3-A1, Class 3-A2 and Class 3-A3 Certificates
                                            will be allocated to the Class 3-A1 and Class 3-A2 Certificates
                                            (together, the 'Pool 3 Group I Senior Certificates') during the first
                                            five years after the Cut-off Date (with such allocation being subject
                                            to reduction thereafter as described herein), except as otherwise
                                            described herein on or following the Pool 3 Group I Final
                                            Distribution Date. This allocation prior to the Pool 3 Group I Final
                                            Distribution Date has the effect of accelerating the amortization of
                                            the Pool 3 Group I Senior Certificates while increasing the
</TABLE>
 
                                      S-18
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            percentage interest in the principal balance of the Mortgage Loans
                                            evidenced by the Class 3-A3 Certificates (the 'Pool 3 Group II Senior
                                            Certificates'). Notwithstanding the foregoing, all distributions of
                                            principal on the outstanding Pool 3 Senior Certificates will be made
                                            pro rata among such Certificates on each Distribution Date after the
                                            Pool 3 Cross-Over Date. See 'Pool 3 Annex--Distribution on the Pool 3
                                            Certificates--Principal' herein.
 
                                            Pool 4.  The entire amount of the applicable Non-PO Percentage of any
                                            payments of principal (including scheduled payments, prepayments and
                                            other unscheduled recoveries of principal) with respect to the Pool 4
                                            Mortgage Loans allocable to the Pool 4 Senior Certificates (other
                                            than the Class 4-PO Certificates) will be allocated to each such Pool
                                            4 Senior Certificate except the Class 4-A4 Certificates (together,
                                            the 'Pool 4 Group I Senior Certificates') during the first five years
                                            after the Cut-off Date (with such allocation being subject to
                                            reduction thereafter as described herein), except as otherwise
                                            described herein on or following the Pool 4 Group I Final
                                            Distribution Date. This allocation prior to the Pool 4 Group I Final
                                            Distribution Date has the effect of accelerating the amortization of
                                            the Pool 4 Group I Senior Certificates while increasing the
                                            percentage interest in the principal balance of the Mortgage Loans
                                            evidenced by the Class 4-A4 Certificates (the 'Pool 4 Group II Senior
                                            Certificates'). Notwithstanding the foregoing, all distributions of
                                            principal on the outstanding Pool 4 Senior Certificates other than
                                            the Class 4-PO Certificates will be made pro rata among such
                                            Certificates on each Distribution Date after the Pool 4 Cross-Over
                                            Date. See 'Pool 4 Annex-- Distributions on the Pool 4
                                            Certificates--Principal' herein.
 
PREPAYMENT AND YIELD
  CONSIDERATIONS..........................  The rate of principal distributions on the Certificates, the
                                            aggregate amount of each interest distribution on the Certificates
                                            and the yields to maturity of the Certificates are related to the
                                            rate of principal payments on or in respect of the related Mortgage
                                            Loans. Mortgage principal payments may be in the form of scheduled
                                            principal payments, voluntary prepayments by the mortgagors (such as,
                                            for example, prepayments in full due to refinancings, including
                                            refinancings made by the Company in the ordinary course of conducting
                                            its mortgage banking business, some of which refinancings may be
                                            solicited by the Company, or prepayments in connection with biweekly
                                            payment programs, participation in which may be solicited by the
                                            Company) and prepayments resulting from default, foreclosure,
                                            casualty, condemnation and similar events and certain repurchases by
                                            the Company of the Mortgage Loans under the circumstances described
                                            herein. See 'Yield, Maturity and Weighted Average Life
                                            Considerations' in the Prospectus. Mortgagors are permitted to prepay
                                            the Mortgage Loans, in whole or in part, at any time without penalty.
                                            Mortgage prepayment rates are likely to fluctuate significantly. In
                                            general, when prevailing mortgage interest rates decline
                                            significantly below the interest rates on the Mortgage Loans, the
                                            prepayment rate on such Mortgage Loans is likely to increase, and
                                            when prevailing mortgage interest rates rise significantly above the
                                            interest rates on the Mortgage
</TABLE>
 
                                      S-19
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Loans, the prepayment rate on such Mortgage Loans is likely to
                                            decrease, although other economic, geographic and social factors also
                                            may influence the prepayment rate. See 'Pool 1 Annex--Pool 1 Yield
                                            and Weighted Average Life Considerations-- Prepayments,' 'Pool 2
                                            Annex--Pool 2 Yield and Weighted Average Life
                                            Considerations--Prepayments', 'Pool 3 Annex-- Pool 3 Yield and
                                            Weighted Average Life Considerations-- Prepayments' and 'Pool 4
                                            Annex--Pool 4 Yield and Weighted Averaged Life
                                            Considerations--Prepayments'.
 
                                            The entire amount of the applicable Non-PO Percentage of any
                                            prepayment and other unscheduled recovery of principal with respect
                                            to a Mortgage Loan will be allocated solely to the outstanding Senior
                                            Certificates in respect of the related Mortgage Pool (other than the
                                            related Class PO Certificates, and, in the case of Pool 1, the Class
                                            1-A6 Certificates and, in the case of Pool 2, the Class 2-A3
                                            Certificates) during the first five years after the Cut-off Date
                                            (with such allocation being subject to reduction thereafter as
                                            described herein), except as otherwise described herein on or
                                            following the Pool 1 Senior Final Distribution Date, Pool 2 Senior
                                            Final Distribution Date, the Pool 3 Senior Final Distribution Date
                                            and the Pool 4 Senior Final Distribution Date, as applicable, or the
                                            related Cross-Over Date. Among such Senior Certificates, such amounts
                                            will be allocated solely to certain of the outstanding related Senior
                                            Certificates as described herein. The entire amount of the applicable
                                            PO Percentage of any prepayment or unscheduled recovery of principal
                                            with respect to a Mortgage Loan in Pool 1, Pool 2, Pool 3 or Pool 4
                                            will be allocated solely to the related Class PO Certificates, so
                                            long as such Class is outstanding. See 'Pool 1 Annex--Distributions
                                            on the Pool 1 Certificates--Principal,' 'Pool 2 Annex--Distributions
                                            on the Pool 2 Certificates--Principal', 'Pool 3 Annex--Distributions
                                            on the Pool 3 Certificates-- Principal' and 'Pool 4
                                            Annex--Distributions on the Pool 4 Certificates--Principal' herein.
 
                                            Voluntary prepayments in full of principal on the Mortgage Loans
                                            received from the sixteenth day (or, in the case of the month of the
                                            Cut-off Date, from the Cut-off Date) through the last day of each
                                            month, and any voluntary partial prepayments of principal on the
                                            Mortgage Loans in each month, will reduce the amount of interest
                                            available for distribution to related Certificateholders in the
                                            following month from the amount which would have been available in
                                            the absence of such prepayments. Any shortfalls in interest as a
                                            result of such early receipt of principal, to the extent not offset
                                            by a related Compensating Interest Payment (as defined herein),
                                            generally will produce a lower yield on the related Certificates than
                                            would otherwise be the case, although such early receipt of principal
                                            by holders of Classes of Certificates purchased at a discount may
                                            offset the yield reduction for such Classes. The interest
                                            distributable on the Certificates offered hereby will also be reduced
                                            by such Certificates' share of the interest portion of any Excess
                                            Losses allocable to Certificateholders in respect of the related
                                            Mortgage Pool through the related Cross-Over Date and the interest
                                            portion of
</TABLE>
 
                                      S-20
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            all Realized Losses allocable to Certificateholders in respect of the
                                            related Mortgage Pool after the related Cross-Over Date.
 
                                            The yields to investors will be sensitive, in varying degrees, to the
                                            rate and timing of related Mortgage Loan prepayments (including
                                            unscheduled recoveries of principal). The extent to which the yield
                                            to maturity of a Certificate is sensitive to prepayments and other
                                            unscheduled receipts of principal will depend upon the degree to
                                            which it is purchased at a discount or premium. In the case of
                                            Certificates purchased at a premium, and especially in the case of
                                            the Class 1-A6 and Class 2-A3 Certificates, faster than anticipated
                                            rates of principal payments on the related Mortgage Loans could
                                            result in actual yields to such investors that are lower than the
                                            anticipated yields and could result in a reduction in the weighted
                                            average lives of such Certificates. Investors in the Class 1-A6 and
                                            Class 2-A3 Certificates should consider the risk that a rapid rate of
                                            principal prepayments could result in the failure of such investors
                                            to recover their investment. In the case of Certificates purchased at
                                            a discount, slower than anticipated rates of principal payments on
                                            the related Mortgage Loans could result in actual yields to investors
                                            that are lower than the anticipated yields and could result in an
                                            extension of the weighted average lives of such Certificates. As
                                            described herein, the Notional Principal Balance of the Class 1-A6
                                            Certificates is derived from the Class Certificate Principal Balances
                                            of each of the Class 1-A1, Class 1-A2 and Class 1-A3 Certificates,
                                            which are Pool 1 PAC Certificates.
 
                                            Low levels of LIBOR will reduce the yields on the Class 1-A8, Class
                                            1-A11, Class 2-A4 and Class 4-A2 Certificates. Conversely, because
                                            the interest rates on the Class 1-A9, Class 1-A12, Class 2-A5, Class
                                            2-A6 and Class 4-A3 Certificates can fall as low as 0% (which will
                                            occur whenever LIBOR equals or exceeds 8.00% in the case of the Class
                                            1-A9 Certificates, 8.30% in the case of the Class 1-A12 Certificates,
                                            7.50% in the case of the Class 2-A5 Certificates, 8.00% in the case
                                            of the Class 2-A6 Certificates and 8.10% in the case of the Class
                                            4-A3 Certificates for the relevant Interest Accrual Period, other
                                            than the first such period), high levels of LIBOR will have a
                                            material negative effect on the yields of the Class 1-A9, Class
                                            1-A12, Class 2-A5, Class 2-A6 and Class 4-A3 Certificates. See 'Pool
                                            1 Annex--Pool 1 Yield and Weighted Average Life
                                            Considerations--Sensitivity of the Class 1-A8, Class 1-A9, Class
                                            1-A11 and Class 1-A12 Certificates', 'Pool 2 Annex--Pool 2 Yield and
                                            Weighted Average Life Considerations--Sensitivity of the Class 2-A4,
                                            Class 2-A5 and 2-A6 Certificates' and 'Pool 4 Annex--Pool 4 Yield and
                                            Weighted Average Life Considerations-- Sensitivity of the Class 4-A2
                                            and Class 4-A3 Certificates' herein.
 
                                            Rapid rates of prepayments on the Mortgage Loans are likely to
                                            coincide with periods of low prevailing interest rates. During such
                                            periods, the yields at which an investor in the related Certificates
                                            may be able to reinvest amounts received as payments on the
                                            investors' Certificates may be lower than the yields on such
                                            Certificates. Conversely, slow rates of prepayments on the Mortgage
                                            Loans are likely to coincide with periods of high prevailing interest
                                            rates. During such periods, the amount of payments available to an
</TABLE>
 
                                      S-21
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            investor in the related Certificates for reinvestment at such high
                                            rates may be relatively low.
 
                                            The Certificates in each Certificate Group offered hereby were
                                            structured on the basis of, among other things, a prepayment
                                            assumption of 250% (in the case of the Pool 1 Senior Certificates)
                                            and 275% (in the case of the Pool 1 Junior Certificates, the Pool 2
                                            Certificates, the Pool 3 Certificates and the Pool 4 Certificates) of
                                            the Prepayment Assumption (as defined herein) and corresponding
                                            weighted average lives as described herein. The weighted average
                                            lives of the Certificates offered hereby at their respective
                                            Prepayment Assumptions, based on the assumptions described under
                                            'Pool 1 Annex--Pool 1 Yield and Weighted Average Life
                                            Considerations--Weighted Average Lives of the Certificates-- Tables
                                            of Pool 1 Class Certificate Principal Balances,' 'Pool 2 Annex--Pool
                                            2 Yield and Weighted Average Life Considerations-- Tables of Pool 2
                                            Class Certificate Principal Balances', 'Pool 3 Annex--Pool 3 Yield
                                            and Weighted Average Life Considerations-- Tables of Pool 3 Class
                                            Certificate Principal Balances' herein, are set forth in the tables
                                            that appear under such headings. The Mortgage Loans in any Pool are
                                            not likely to prepay at the constant rate of 250% or 275% of the
                                            Prepayment Assumption, or any other constant rate, and the actual
                                            weighted average lives of the Certificates are likely to differ from
                                            those shown in such tables.
 
                                            The yields on the Junior Certificates will be sensitive, in varying
                                            degrees, to the liquidation of and any subsequent loss experience on
                                            the related Mortgage Loans and to the timing of any such losses.
 
                                            Among the Pool 1, Pool 2, Pool 3 and Pool 4 Junior Certificates
                                            offered hereby, yield sensitivity will generally be greatest among
                                            the related Class bearing a B2 subdesignation relative to the related
                                            Classes bearing an M or B1 subdesignation; greater among the related
                                            Class bearing a B1 subdesignation relative to the related Class
                                            bearing an M subdesignation; and greater among the related Class
                                            bearing an M subdesignation relative to the related Pool of Senior
                                            Certificates. See 'Pool 1 Annex--Pool 1 Yield and Weighted Average
                                            Life Considerations--The Class 1-M, Class 1-B1 and Class 1-B2
                                            Certificates,' 'Pool 2 Annex--Pool 2 Yield and Weighted Average Life
                                            Considerations--The Class 2-M, Class 2-B1 and Class 2-B2
                                            Certificates', 'Pool 3 Annex--Pool 3 Yield and Weighted Average Life
                                            Considerations--The Class 3-M, Class 3-B1 and Class 3-B2
                                            Certificates' and 'Pool 4 Annex--Pool 4 Yield and Weighted Average
                                            Life Considerations--The Class 4-M, Class 4-B1 and Class 4-B2
                                            Certificates' herein. In addition, (i) the applicable Non-PO
                                            Percentage of the principal portion of any Realized Loss (other than
                                            a Debt Service Reduction and any Realized Loss that constitutes an
                                            Excess Loss, as described below) in respect of a Mortgage Loan will
                                            be allocated, to the extent described herein, among the related
                                            Certificate Group (other than the related Class PO Certificates) in
                                            inverse order of priority, beginning with the Class bearing a B5
                                            subdesignation and ending with the related Senior Certificates, and
                                            (ii) the applicable PO Percentage of any such loss in respect of a
                                            Mortgage Loan through the related Cross-Over Date will be allocated,
                                            to the extent described herein, among the related
</TABLE>
 
                                      S-22
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Pool's Junior Certificates in inverse order of priority, through the
                                            operation of the related Class PO Deferred Writedown Amount.
 
                                            Certain Realized Loss scenarios could result in the failure of
                                            investors in the Junior Certificates offered hereby to fully recover
                                            their initial investment.
 
                                            The prepayment, yield, loss and other assumptions to be used for
                                            pricing purposes for the Certificates in each Certificate Group may
                                            vary as determined at the time of sale. Each prospective investor is
                                            urged to make an investment decision with respect to the Certificates
                                            proposed to be purchased by such investor based upon a comparison of
                                            the desired yield to the anticipated yield on such Certificates
                                            resulting from the price to be paid by such investor for such
                                            Certificates and such investor's own determination as to the
                                            anticipated rate of prepayments, defaults and losses on the related
                                            Mortgage Pool.
 
                                            Principal distributions on the PAC Certificates, the TAC Certificates
                                            and Scheduled Certificates will be made by reference to principal
                                            balance schedules, as described herein.

OPTIONAL TERMINATION......................  The Company may, at its option, repurchase from any Trust Fund all of
                                            the Mortgage Loans underlying the related Certificate Group, and
                                            thereby effect the early retirement of such Certificates, on any
                                            Distribution Date after the aggregate Scheduled Principal Balance of
                                            the Mortgage Loans in such Trust Fund is less than 10% of the
                                            aggregate Scheduled Principal Balance thereof as of the Cut-off Date.
                                            If the proceeds realized upon such early retirement are less than the
                                            aggregate Class Certificate Principal Balance of all outstanding
                                            Certificates of the related Certificate Group, plus accrued and
                                            unpaid interest thereon, the resulting shortfall will be allocated
                                            among the Certificates of such Certificate Group as described herein.
                                            See 'The Pooling and Servicing Agreement-- Termination' herein.

FINAL DISTRIBUTION DATES..................  The rate of distribution of principal of the Certificates will depend
                                            on the rate of payment of principal of the related Mortgage Loans
                                            which, in turn, will depend on the characteristics of such Mortgage
                                            Loans, the level of prevailing interest rates and other economic,
                                            geographic and social factors. No assurance can be given as to the
                                            actual payment experience of the Mortgage Loans.

CERTAIN FEDERAL INCOME TAX CONSEQUENCES...  For federal income tax purposes, the Pool 3 Trust Fund and the Pool 4
                                            Trust Fund will each consist of a single 'real estate mortgage
                                            investment conduit' (each, a 'REMIC'). The Pool 3 and Pool 4
                                            Certificates other than the related Residual Certificates will be
                                            treated as the regular interests in the related REMIC. The Pool 1 and
                                            Pool 2 Trust Funds will each consist of two REMICs (the 'Pool 1
                                            Upper-Tier REMIC', the 'Pool 1 Lower-Tier REMIC', 'Pool 2 Upper-Tier
                                            REMIC' and the 'Pool 2 Lower-Tier REMIC', respectively). Each Class
                                            of Pool 1 Certificates, other than the Class 1-R and Class 1-RL
                                            Certificates will be designated as regular interests in the Pool 1
                                            Upper-Tier REMIC. Each Class of Pool 2 Certificates, other than the
                                            Class 2-R and Class 2-RL Certificates will be designated as regular
                                            interests (together with the Pool 1, Pool
</TABLE>
 
                                      S-23
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            2, Pool 3 and Pool 4 Certificates representing their respective
                                            regular interests, the 'Regular Certificates') in the Pool 2 Upper-
                                            Tier REMIC. The Class 1-R and Class 1-RL Certificates will be
                                            designated as the residual interests in the Pool 1 Upper-Tier REMIC
                                            and the Pool 1 Lower-Tier REMIC, respectively. The Class 2-R and
                                            Class 2-RL Certificates will be designated as the residual interests
                                            in the Pool 2 Upper-Tier REMIC and the Pool 2 Lower-Tier REMIC,
                                            respectively. The Regular Certificates generally will be treated as
                                            debt instruments issued by the related REMIC for federal income tax
                                            purposes. Certain Classes of the Regular Certificates may be, the
                                            Class 1-A6 and Class 2-A3 Certificates will likely be, and the
                                            Accrual Certificates will be, issued with original issue discount.
                                            The prepayment assumption that will be used in determining the rate
                                            of accrual of any original issue discount on the Regular Certificates
                                            for federal income tax purposes (and whether such original issue
                                            discount is de minimis), and that may be used by a holder of a
                                            Regular Certificate to amortize premium, will be 250% (in the case of
                                            Pool 1) and 275% (in the case of Pool 2, Pool 3 and Pool 4) of the
                                            Prepayment Assumption. No representation is made that the Mortgage
                                            Loans of any Mortgage Pool will prepay at such rate or at any other
                                            rate. The holders of the Residual Certificates of each Certificate
                                            Group will be subject to special federal income tax rules that may
                                            significantly reduce the after-tax yield on such Certificates.
                                            Further, significant restrictions apply to the transfer of the
                                            Residual Certificates. See 'Description of the
                                            Certificates--Restrictions on Transfer of the Residual Certificates'
                                            herein. The amount of income reported by a holder of a Junior
                                            Certificate may exceed cash distributions as a result of the
                                            preferential right of other Classes of related Regular Certificates
                                            to receive cash distributions in the event of losses or delinquencies
                                            on the related Mortgage Loans. See 'Certain Federal Income Tax
                                            Consequences' herein and 'Certain Federal Income Tax
                                            Consequences--REMIC Certificates' in the Prospectus.

LEGAL INVESTMENT..........................  The Senior Certificates offered hereby and the Class 1-M, Class 2-M,
                                            Class 3-M and Class 4-M Certificates will constitute 'mortgage
                                            related securities' for purposes of the Secondary Mortgage Market
                                            Enhancement Act of 1984 ('SMMEA'). However, institutions whose
                                            investment activities are subject to legal investment laws and
                                            regulations or review by certain regulatory authorities may be
                                            subject to restrictions on investment in such Certificates. The Class
                                            B Certificates offered hereby will not constitute 'mortgage related
                                            securities' under SMMEA. The appropriate characterization of such
                                            Class B Certificates under various legal investment restrictions, and
                                            thus the ability of investors subject to these restrictions to
                                            purchase such Certificates, may be subject to significant
                                            interpretive uncertainties. All investors whose investment authority
                                            is subject to legal restrictions should consult their own legal
                                            advisors to determine whether, and to what extent, such Class B
                                            Certificates will constitute legal investments for them. See 'Legal
                                            Investment Matters' herein and in the Prospectus.

ERISA CONSIDERATIONS......................  Fiduciaries of employee benefit plans subject to the Employee
                                            Retirement Income Security Act of 1974, as amended ('ERISA'), or
                                            plans subject to Section 4975 of the Internal Revenue Code of
</TABLE>
 
                                      S-24
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            1986 (the 'Code') should carefully review with their legal advisors
                                            whether the purchase or holding of the Certificates offered hereby
                                            could give rise to a transaction prohibited or not otherwise
                                            permissible under ERISA or the Code. Junior Certificates offered
                                            hereby and the Residual Certificates may not be acquired by an ERISA
                                            Plan (as defined herein) and transfer thereof is subject to the
                                            restrictions described herein. See 'ERISA Considerations' herein.

CERTIFICATE RATINGS.......................  It is a condition of issuance of the Certificates that the Senior
                                            Certificates offered hereby (other than the Class 1-A6 and Class 2-A3
                                            Certificates) be rated 'AAA' by each of Fitch IBCA, Inc. ('Fitch')
                                            and Standard & Poor's Ratings Services, a division of The McGraw-Hill
                                            Companies, Inc. ('S&P'), that the Class 1-A6 and Class 2-A3
                                            Certificates be rated 'AAA' by Fitch and 'AAAr' by S&P, that the
                                            Class 1-M, Class 1-B1, Class 1-B2, the Class 2-M, Class 2-B1, Class
                                            2-B2 and the Class 4-M, Class 4-B1, Class 4-B2 Certificates be rated
                                            'AA,' 'A' and 'BBB,' in each case, respectively, by Fitch, and that
                                            the Class 3-M, Class 3-B1 and Class 3-B2 Certificates be rated 'AA,'
                                            'A' and 'BBB,' respectively, by S&P. The ratings of the Certificates
                                            should be evaluated independently from similar ratings on other types
                                            of securities. A security rating is not a recommendation to buy, sell
                                            or hold securities and may be subject to revision or withdrawal at
                                            any time by the assigning rating agency. The ratings do not address
                                            the possibility that Certificateholders may suffer a lower than
                                            anticipated yield. See 'Certificate Ratings' herein.

LIQUIDITY CONSIDERATIONS..................  There is currently no secondary market for the Certificates offered
                                            hereby, and there can be no assurance that such a market will
                                            develop. Greenwich Capital, Lehman and CSFB have each indicated its
                                            intention to establish a market in the Certificates offered hereby by
                                            such Underwriter, but none is obligated to do so. There can be no
                                            assurance that a secondary market for the Certificates will develop,
                                            or if it does develop, will continue for the life of the related
                                            Certificates or provide investors with liquidity of investment. In
                                            addition, there can be no assurance that an investor in a Certificate
                                            will be able to sell such Certificate at a price that is equal to or
                                            greater than the price at which such investor purchased such
                                            Certificate.

                                            Information available to investors that desire to sell their
                                            Certificates in the secondary market may be limited. In particular,
                                            price quotations regarding specific Classes of the Certificates are
                                            not currently available in any newspaper or other source that is
                                            widely available to investors.

                                            The Company believes that a number of dealers that engage in the
                                            mortgage-backed securities markets currently offer price quotations
                                            for the Company's mortgage pass-through certificates to investors
                                            that desire to buy or sell such certificates. However, there is no
                                            assurance that such dealers will continue to provide such a service
                                            or that any such dealer will offer a price quotation for any
                                            particular series or class of the Company's certificates. In
                                            addition, there is no assurance that any such dealer will offer a
                                            price quotation to any particular investor, and non-institutional
                                            investors in particular may not have access to such quotations. The
                                            lack of availability of price
</TABLE>
 
                                      S-25
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            information concerning the Certificates offered hereby may affect
                                            their liquidity.

                                            The Company currently maintains an electronic bulletin board (the
                                            'Bulletin Board') which provides certain loan-level information about
                                            loans included in various series of mortgage pass-through securities
                                            which have been publicly offered by the Company. The Company intends
                                            to make information about the Mortgage Loans available on the
                                            Bulletin Board as of the first Distribution Date and thereafter while
                                            the Bulletin Board is maintained. The loan-level information
                                            appearing on the Bulletin Board is accessible by computer modem. The
                                            Company makes no representation or warranty that such information
                                            will be suitable for any particular purpose and the Company assumes
                                            no responsibility for the accuracy or completeness of any information
                                            that is generated therefrom. The Company has no obligation to
                                            maintain the Bulletin Board and may cease to do so at any time. For
                                            further information concerning the Bulletin Board, please call
                                            800-544-3466, extension 5515.

USE OF PROCEEDS...........................  The net proceeds from the sale of the Certificates offered hereby
                                            will be used by the Company for general corporate purposes, including
                                            the acquisition of residential mortgage loans and servicing rights.
</TABLE>
 
                                      S-26


<PAGE>

                       DESCRIPTION OF THE MORTGAGE POOLS
                          AND THE MORTGAGED PROPERTIES
 
GENERAL
 
     The Certificates will consist of four groups of Certificates (respectively,
the 'Pool 1 Certificates,' 'Pool 2 Certificates', the 'Pool 3 Certificates' and
the 'Pool 4 Certificates' and each, a 'Certificate Group'), each representing
the entire beneficial ownership interest in a distinct trust fund (each, a
'Trust Fund'). The assets of each Trust Fund will consist primarily of its
respective pool ('Pool 1,' 'Pool 2', 'Pool 3' and 'Pool 4,' respectively, and
each, a 'Mortgage Pool') of conventional, fixed-rate, fully-amortizing mortgage
loans (the 'Mortgage Loans'). The Mortgage Loans are secured by mortgages, deeds
of trust or other security instruments (each, a 'Mortgage') creating a first
lien on one- to four-family residential properties (the 'Mortgaged Properties').
The Mortgage Loans included in Pool 1 are referred to as 'Pool 1 Mortgage
Loans,' the Mortgage Loans included in Pool 2 are referred to as 'Pool 2
Mortgage Loans,' the Mortgage Loans included in Pool 3 are referred to as 'Pool
3 Mortgage Loans' and the Mortgage Loans included in Pool 4 are referred to as
'Pool 4 Mortgage Loans.' The Pool 1 Certificates will evidence the right to
receive all payments and other collections in respect of the Pool 1 Mortgage
Loans, the Pool 2 Certificates will evidence the right to receive all payments
and other collections in respect of the Pool 2 Mortgage Loans, the Pool 3
Certificates will evidence the right to receive all payments and other
collections in respect of Pool 3 Mortgage Loans and the Pool 4 Certificates will
evidence the right to receive all payments and other collections in respect of
Pool 4 Mortgage Loans, in each case to the extent described herein. The
Certificates of a Certificate Group may experience shortfalls or losses on a
Distribution Date even though distributions are made on such date to
Certificates of the other Certificate Group.
 
     Certain data with respect to the Pool 1 Mortgage Loans, the Pool 2 Mortgage
Loans, the Pool 3 Mortgage Loans and the Pool 4 Mortgage Loans are set forth in
the Pool 1 Annex, Pool 2 Annex, the Pool 3 Annex and Pool 4 Annex included
herein (each, an 'Annex'), respectively. A detailed description of the Mortgage
Pools on a Current Report on Form 8-K (the 'Detailed Description') will be
available to purchasers of the Certificates at or before, and will be filed with
the Securities and Exchange Commission within fifteen days after, the initial
delivery of the Certificates offered hereby. The Detailed Description will
specify the precise aggregate Scheduled Principal Balance (as defined herein) of
the Mortgage Loans as of the Cut-off Date and will also include the following
information regarding the Mortgage Loans, in each case by Mortgage Pool: the
years of origination, the mortgage interest rates borne by the Mortgage Loans
(the 'Mortgage Rates'), the original loan-to-value ratios, the types of
properties securing the Mortgage Loans and the geographical distribution of the
Mortgage Loans by state. The Detailed Description also will specify, by Mortgage
Pool, the original Class Certificate Principal Balance or Notional Principal
Balance of each Class of Certificates (and in the case of the Class 1-A6 and
Class 2-A3 Certificates, the formula for calculating the Notional Principal
Balances thereof), the initial Pool 1 Senior Percentage, the initial Pool 2
Senior Percentage, the initial Class 2-A9 Percentage, the initial Pool 3 Senior
Percentage, the initial Class 3-A3 Percentage, the initial Pool 4 Senior
Percentage, the initial Class 4-A4 Percentage, the initial Pool 1 Junior
Percentage, the initial Pool 2 Junior Percentage, the initial Pool 3 Junior
Percentage and the initial Pool 4 Junior Percentage (each as defined herein),
the Bankruptcy Loss Amount, Fraud Loss Amount and Special Hazard Loss Amount
(each as defined herein) in respect of each Mortgage Pool as of the Cut-off
Date. The Agreement (as defined herein) and its exhibits, including the final
PAC, TAC and Scheduled Balances, will be filed as an exhibit to the Detailed
Description.
 
     The 'Scheduled Principal Balance' of a Mortgage Loan as of any Distribution
Date is the unpaid principal balance of such Mortgage Loan as specified in the
amortization schedule at the time relating thereto (before any adjustment to
such schedule by reason of bankruptcy or similar proceeding or any moratorium or
similar waiver or grace period) as of the first day of the month preceding the
month of such Distribution Date, after giving effect to any previously applied
partial principal prepayments, the payment of principal due on such first day of
the month and Deficient Valuations occurring after the related Bankruptcy
Coverage Termination Date (as such terms are defined herein), irrespective of
any delinquency in payment by the related borrower (the 'Mortgagor'). The 'Pool
Scheduled Principal Balance' of a Mortgage Pool as of any Distribution Date is
equal to the aggregate Scheduled Principal Balances of all of the Mortgage Loans
in such Mortgage Pool that were Outstanding Mortgage Loans on the first day of
the month preceding the month of such Distribution Date (or
 
                                      S-27
<PAGE>

such other date as is specified). An 'Outstanding Mortgage Loan' is any Mortgage
Loan which has not been prepaid in full, has not become a Liquidated Mortgage
Loan and has not been repurchased.
 
     Each Mortgage Loan other than a Cooperative Loan (as defined in the
accompanying Prospectus) is required to be covered by a standard hazard
insurance policy. Each Mortgage Loan which had a loan-to-value ratio at
origination in excess of 80% also will be covered by a private mortgage
insurance policy. See 'Servicing of the Mortgage Loans and Contracts--Hazard
Insurance' and '--Private Mortgage Insurance' in the Prospectus.
 
     All payments due on each Mortgage Loan on which at least one payment of
principal and interest was due prior to the Cut-off Date will have been paid
through the first day of the month preceding the Cut-off Date.
 
     For a description of the underwriting standards generally applicable to the
Mortgage Loans, see 'The Trust Fund--The Mortgage Loans--Loan Underwriting
Policies' in the Prospectus.
 
                        DESCRIPTION OF THE CERTIFICATES
 
GENERAL
 
     The Certificates will be issued pursuant to a single Pooling and Servicing
Agreement to be dated as of the Cut-off Date (the 'Agreement') between the
Company, as seller and servicer, and the Trustee, acting as trustee of separate
Trust Funds for the benefit of holders of Certificates of the related
Certificate Groups. Reference is made to the Prospectus for important additional
information regarding the terms and conditions of the Agreement and the
Certificates. The Pool 1 Certificates will be issued in the nineteen Classes
offered hereby, together with the Class 1-B3, Class 1-B4, Class 1-B5 and Class
1-PO Certificates, none of which are offered hereby, and in the aggregate
original Certificate Principal Balance of approximately $400,661,896, subject to
a permitted variance such that the aggregate original Certificate Principal
Balance will not be less than $380,000,000 or greater than $420,000,000. The
Pool 2 Certificates will be issued in the fourteen Classes offered hereby,
together with the Class 2-B3, Class 2-B4, Class 2-B5 and Class 2-PO
Certificates, none of which are offered hereby, and in the aggregate original
Certificate Principal Balance of approximately $200,222,314, subject to a
permitted variance such that the aggregate original Certificate Principal
Balance will not be less than $190,000,000 or greater than $210,000,000. The
Pool 3 Certificates will be issued in the eight Classes offered hereby, together
with the Class 3-B3, Class 3-B4, Class 3-B5 and Class 3-PO Certificates, none of
which are offered hereby, and in the aggregate original Certificate Principal
Balance of approximately $176,002,356, subject to a permitted variance such that
the aggregate original Certificate Principal Balance will not be less than
$166,250,000 or greater than $183,750,000. The Pool 4 Certificates will be
issued in the seventeen classes offered hereby, together with the Class 4-B3,
Class 4-B4, Class 4-B5 and Class 4-PO Certificates, none of which are offered
hereby, and in the aggregate original Certificate Principal Balance of
approximately $201,364,346, subject to a permitted variance such that the
aggregate original Certificate Principal Balance will not be less than
$190,000,000 or greater than $210,000,000. Any such variance will be allocated
so as to approximate the material characteristics of the Classes of Certificates
described herein.
 
     As described below, each Class of Certificates offered hereby, other than
the Class 1-R, Class 1-RL, Class 2-R, Class 2-RL, Class 3-R and Class 4-R
Certificates (together, the 'Residual Certificates'), will be issued in
book-entry form, and beneficial interests therein will be held by investors
through the book-entry facilities of the Depository (as defined below), in
minimum denominations in Certificate Principal Balance or Notional Principal
Balance, as the case may be, of $25,000 (in the case of the Senior Certificates
offered hereby other than the Class 1-A6, Class 2-A3, Class 4-A7, Class 4-A8,
Class 4-A9, Class 4-A10, Class A-411, Class 4-A12, Class 4-A13 and the Residual
Certificates), $1,000 (in the case of the Class 4-A7, Class 4-A8, Class 4-A9,
Class 4-A10, Class 4-A11, Class 4-A12 and Class 4-A13 Certificates), $121,000
(in the case of the Class 1-A6 Certificates), $139,000 (in the case of the Class
2-A3 Certificates) or $100,000 (in the case of the Junior Certificates offered
hereby), and, in each case, integral multiples of $1,000 in excess thereof. Each
of the Residual Certificates will be issued in certificated form as a single
Certificate representing the entire Class Certificate Principal Balance thereof.
Notwithstanding the integral multiple requirements described above, one
Certificate of each Class other than the Residual Certificates may evidence an
additional amount equal to the remaining Class Certificate Principal Balance
thereof.
 
                                      S-28
<PAGE>

BOOK-ENTRY CERTIFICATES
 
     Each Class of Certificates offered hereby other than the Residual
Certificates (together, the 'Book-Entry Certificates') will be registered as a
single certificate held by a nominee of The Depository Trust Company (together
with any successor depository selected by the Company, the 'Depository').
Beneficial interests in the Book-Entry Certificates will be held by investors
through the book-entry facilities of the Depository, as described herein. The
Company has been informed by the Depository that its nominee will be Cede & Co.
('Cede'). Accordingly, Cede is expected to be the holder of record of the
Book-Entry Certificates. Except as described below, no person acquiring a
Book-Entry Certificate (each, a 'beneficial owner') will be entitled to receive
a physical certificate representing such Certificate (a 'Definitive
Certificate').
 
     The beneficial owner's ownership of a Book-Entry Certificate will be
recorded on the records of the brokerage firm, bank, thrift institution or other
financial intermediary (each, a 'Financial Intermediary') that maintains the
beneficial owner's account for such purpose. In turn, the Financial
Intermediary's ownership of such Book-Entry Certificate will be recorded on the
records of the Depository (or of a participating firm (each, a 'Participant')
that acts as agent for the Financial Intermediary, whose interest will in turn
be recorded on the records of the Depository, if the beneficial owner's
Financial Intermediary is not a Participant). Therefore, the beneficial owner
must rely on the foregoing procedures to evidence its beneficial ownership of a
Book-Entry Certificate. Beneficial ownership of a Book-Entry Certificate may
only be transferred by compliance with the procedures of such Financial
Intermediaries and Participants.
 
     The Depository, which is a New York-chartered limited purpose trust
company, performs services for its Participants, some of which (and/or their
representatives) own the Depository. In accordance with its normal procedures,
the Depository is expected to record the positions held by each Participant in
the Book-Entry Certificates, whether held for its own account or as a nominee
for another person. In general, beneficial ownership of Book-Entry Certificates
will be subject to the rules, regulations and procedures governing the
Depository and Participants as in effect from time to time.
 
     Distributions of principal of and interest on the Book-Entry Certificates
will be made on each Distribution Date by the Trustee to the Depository. The
Depository will be responsible for crediting the amount of such payments to the
accounts of the applicable Participants in accordance with the Depository's
normal procedures. Each Participant will be responsible for disbursing such
payments to the beneficial owners of the Book-Entry Certificates that it
represents and to each Financial Intermediary for which it acts as agent. Each
such Financial Intermediary will be responsible for disbursing funds to the
beneficial owners of the Book-Entry Certificates that it represents.
 
     As a result, under a book-entry format, beneficial owners of the Book-Entry
Certificates may experience some delay in their receipt of payments. Because the
Depository can only act on behalf of Financial Intermediaries, the ability of a
beneficial owner to pledge Book-Entry Certificates to persons or entities that
do not participate in the Depository system, or otherwise take actions in
respect of such Book-Entry Certificates, may be limited due to the lack of
physical certificates for such Book-Entry Certificates. In addition, issuance of
the Book-Entry Certificates in book-entry form may reduce the liquidity of such
Certificates in the secondary market since certain potential investors may be
unwilling to purchase Certificates for which they cannot obtain physical
certificates.
 
     The Depository has advised the Company and the Trustee that, unless and
until Definitive Certificates are issued, the Depository will take any action
permitted to be taken by a Certificateholder under the Agreement only at the
direction of one or more Financial Intermediaries to whose Depository accounts
the Book-Entry Certificates are credited. The Depository may take conflicting
actions with respect to other Book-Entry Certificates to the extent that such
actions are taken on behalf of Financial Intermediaries whose holdings include
such Book-Entry Certificates.
 
     Definitive Certificates will be issued to beneficial owners of the related
Book-Entry Certificates, or their nominees, rather than to the Depository, only
if (a) the Depository or the Company advises the Trustee in writing that the
Depository is no longer willing, qualified or able to discharge properly its
responsibilities as nominee and depository with respect to the Certificates and
the Company or the Trustee is unable to locate a qualified successor; (b) the
Company, at its sole option, elects to terminate the book-entry system through
the Depository;
 
                                      S-29
<PAGE>

or (c) after the occurrence of an Event of Default with respect to a Trust Fund
(as described in the accompanying Prospectus) beneficial owners of Book-Entry
Certificates of the related Certificate Group aggregating not less than 51% of
the aggregate voting rights allocated thereto advise the Trustee and the
Depository through the Financial Intermediaries in writing that the continuation
of a book-entry system through the Depository (or a successor thereto) is no
longer in the best interests of beneficial owners of the Certificates.
 
     Upon the occurrence of any of the events described in the immediately
preceding paragraph, the Trustee will be required to notify all beneficial
owners of the occurrence of such event and the availability through the
Depository of Definitive Certificates. Upon surrender by the Depository of the
global certificate or certificates representing the Certificates and
instructions for re-registration, the Trustee will issue the Definitive
Certificates, and thereafter the Trustee will recognize the holders of such
Definitive Certificates as Certificateholders under the Agreement. Following the
issuance of Definitive Certificates, distribution of principal and interest, if
any, on the Certificates will be made by the Trustee directly to holders of
Definitive Certificates in accordance with the procedures set forth in the
Agreement.
 
     The Agreement will provide that, if Definitive Certificates are issued in
respect of any Certificate bearing an M, B1, B2 or B3 subdesignation, no
transfer of such Class of Certificates may be made unless the Trustee has
received (i) a certificate to the effect that the proposed transferee is not an
ERISA Plan (as defined herein) or that the transferee is an insurance company
investing assets of its general account and the exemption provided by Section
III(a) of the Department of Labor Prohibited Transaction Class Exemption 95-60,
60 Fed. Reg. 35925 (July 12, 1995), applies to such transferee's acquisition and
holding of such Certificate or (ii) an opinion of counsel relating to such
transfer in form and substance satisfactory to the Trustee and the Company. See
'ERISA Considerations' herein.
 
NON-BOOK-ENTRY CERTIFICATES
 
     The Residual Certificates (the 'Non-Book-Entry Certificates') will be
issued in fully-registered, certificated form. The Non-Book-Entry Certificates
will be transferable and exchangeable on a Certificate Register to be maintained
at the corporate trust office in the city in which the Trustee is located or
such other office or agency maintained for such purposes by the Trustee in New
York City. Under the Agreement, the Trustee will initially be appointed as the
Certificate Registrar. No service charge will be made for any registration of
transfer or exchange of the Non-Book-Entry Certificates, but payment of a sum
sufficient to cover any tax or other governmental charge may be required by the
Trustee. The Residual Certificates will be subject to certain restrictions on
transfer. See '--Restrictions on Transfer of the Residual Certificates' herein.
 
     Distributions of principal and interest, if any, on each Distribution Date
on the Non-Book-Entry Certificates will be made to the persons in whose names
such Certificates are registered at the close of business on the last business
day of the month immediately preceding the month of such Distribution Date.
Distributions will be made by check or money order mailed to the person entitled
thereto at the address appearing in the Certificate Register or, upon written
request by the Certificateholder to the Trustee, by wire transfer to a United
States depository institution designated by such Certificateholder and
acceptable to the Trustee or by such other means of payment as such
Certificateholder and the Trustee may agree; provided, however, that the final
distribution in retirement of the Non-Book-Entry Certificates will be made only
upon presentation and surrender of such Certificates at the office or agency of
the Trustee specified in the notice to the holders thereof of such final
distribution.
 
AVAILABLE FUNDS
 
     The amount of funds ('Available Funds') in respect of Pool 1 (the 'Pool 1
Available Funds'), Pool 2 (the 'Pool 2 Available Funds'), Pool 3 (the 'Pool 3
Available Funds') and Pool 4 (the 'Pool 4 Available Funds') that will be
available for distribution to holders of the related Certificates on each
Distribution Date is as described in the accompanying Prospectus under
'Servicing of the Mortgage Loans and Contracts--Loan Payment Record.'
 
                                      S-30
<PAGE>

ADDITIONAL RIGHTS OF THE RESIDUAL CERTIFICATEHOLDERS
 
     In addition to principal and interest distributable to the holders of
Residual Certificates as described under 'Pool 1 Annex--Distributions on the
Pool 1 Certificates,' 'Pool 2 Annex--Distributions on the Pool 2 Certificates',
'Pool 3 Annex--Distributions on the Pool 3 Certificates' and 'Pool 4
Annex--Distributions on the Pool 4 Certificates,' herein, (a) the holders of the
Class 1-R, Class 2-R, Class 3-R and Class 4-R Certificates, as the case may be,
will be entitled to receive (i) the amount, if any, of Pool 1 Available Funds,
Pool 2 Available Funds, Pool 3 Available Funds and Pool 4 Available Funds,
respectively, remaining in the Pool 1 Upper-Tier REMIC, the Pool 2 Upper-Tier
REMIC, the Pool 3 REMIC and the Pool 4 REMIC, respectively, on any Distribution
Date after distributions of principal and interest and in respect of any related
Class PO Deferred Amount are made on the Certificates of the related Certificate
Group on such date and (ii) the proceeds, if any, of the assets of the related
Trust Fund remaining in the Pool 1 Upper-Tier REMIC, Pool 2 Upper-Tier REMIC,
the Pool 3 REMIC and the Pool 4 REMIC, respectively, after the Class Certificate
Principal Balances of all Classes of Certificates of the related Certificate
Group have each been reduced to zero, and (b) the holders of the Class 1-RL and
Class 2-RL Certificates will be entitled to receive (i) the amount, if any, of
Pool 1 Available Funds or Pool 2 Available Funds remaining in the Pool 1
Lower-Tier REMIC or the Pool 2 Lower-Tier REMIC, respectively, on any
Distribution Date after distributions of principal and interest on the Pool 1
Lower-Tier regular interests or the Pool 2 Lower-Tier regular interests,
respectively, (as described in the Agreement) and the Class 1-RL and the Class
2-RL Certificates are made on such date and (ii) the proceeds, if any, of the
assets of the Pool 1 Trust Fund or the Pool 2 Trust Fund remaining in the Pool 1
Lower-Tier REMIC or the Pool 2 Lower-Tier REMIC, respectively, after the regular
interests in the Pool 1 Lower-Tier REMIC or the Pool 2 Lower-Tier REMIC,
respectively, and the Class Certificate Principal Balance of the Class 2-RL
Certificates, respectively, have been reduced to zero. It is not anticipated
that any material assets will be remaining in any Trust Fund for such
distributions at any such time. See 'Certain Federal Income Tax
Consequences--Residual Certificates' herein.
 
SUBORDINATION
 
     Priority of Senior Certificates.  As of the date of the initial issuance of
the Certificates, the aggregate Certificate Principal Balance of each of the
Pool 1 Junior Certificates, Pool 2 Junior Certificates, Pool 3 Junior
Certificates and the Pool 4 Junior Certificates will equal approximately 4.00%,
4.00%, 2.00% and 4.00% of the aggregate Certificate Principal Balance of all the
Classes of Pool 1 Certificates, all the Classes of Pool 2 Certificates, all the
Classes of Pool 3 Certificates and all the Classes of Pool 4 Certificates,
respectively. The rights of the holders of the Junior Certificates relating to
each Mortgage Pool to receive distributions with respect to the related Mortgage
Loans will be subordinate to such rights of the holders of the related Senior
Certificates, to the extent described herein. The subordination of the Junior
Certificates relating to each Mortgage Pool is intended (a) to enhance the
likelihood of timely receipt by the holders of the related Senior Certificates
(to the extent of the subordination of such Junior Certificates) of the full
amount of the scheduled monthly distributions of principal and interest
allocable to such Senior Certificates and (b) to afford the holders of the
related Senior Certificates (to the extent of the subordination of such Junior
Certificates) protection against Realized Losses, to the extent described above.
If Realized Losses in respect of a Mortgage Pool exceed the credit support
provided to the related Senior Certificates through subordination, or if Excess
Losses in respect of the related Mortgage Pool occur, all or a portion of such
losses will be borne by such Senior Certificates.
 
     The protection afforded to the holders of Senior Certificates of each
Mortgage Pool by means of the subordination feature will be accomplished by (i)
the preferential right of such holders to receive, prior to any distribution
being made on a Distribution Date in respect of the related Junior Certificates,
in accordance with the paydown rules specified under 'Pool 1
Annex--Distributions on the Pool 1 Certificates--Allocation of Pool 1 Available
Funds,' 'Pool 2 Annex--Distributions on the Pool 2 Certificates--Allocation of
Pool 2 Available Funds,' 'Pool 3 Annex--Distributions on the Pool 3
Certificates--Allocation of Pool 3 Available Funds,' and 'Pool 4
Annex--Distributions on the Pool 4 Certificates--Allocation of Pool 4 Available
Funds,' the amounts due to such Senior Certificateholders on each Distribution
Date out of the related Available Funds with respect to such date and, if
necessary, by the right of such holders to receive future distributions on the
Mortgage Loans in respect of the related Mortgage Pool that would otherwise have
been payable to the holders of the related Junior Certificates, (ii) the
allocation to the related Junior Certificates of the principal portion of the
applicable Non-PO
 
                                      S-31
<PAGE>

Percentage of any Realized Loss (in each case other than an Excess Loss or a
Debt Service Reduction) in respect of the related Mortgage Pool to the extent
set forth herein and (iii) the allocation to the related Junior Certificates of
the applicable PO Percentage of the principal portion of any Realized Loss
(other than an Excess Loss or a Debt Service Reduction) in respect of the
related Mortgage Pool to the extent set forth herein through the operation of
the related Class PO Deferred Payment Writedown Amount. The allocation of the
applicable principal portion of Realized Losses in respect of a Mortgage Pool
(as described herein) to the related Junior Certificates on any Distribution
Date will decrease the protection provided to the related Senior Certificates
then outstanding on future Distribution Dates by reducing the aggregate
Certificate Principal Balance of the related Junior Certificates then
outstanding.
 
     In addition, in order to extend the period during which the Junior
Certificates of each Mortgage Pool remain available as credit enhancement for
the related Senior Certificates, the entire amount of the applicable Non-PO
Percentage of any prepayment or other unscheduled recovery of principal with
respect to a Mortgage Loan in respect of the related Mortgage Pool will be
allocated to the related Senior Certificates (other than the related Class PO
Certificates, Class 1-A6 and Class 2-A3 Certificates) during the first five
years after the Cut-off Date (with such allocation being subject to reduction
thereafter as described herein) except as otherwise described herein on or
following the related Senior Final Distribution Date. Among the Senior
Certificates of each Mortgage Pool (other than Pool 1), such amounts will be
allocated solely to certain Classes of Senior Certificates during the first five
years after the Cut-off Date to the extent described herein.
 
     After the payment of amounts distributable in respect of the Senior
Certificates of each Mortgage Pool on each Distribution Date, the related Junior
Certificates will be entitled on such date to the remaining portion, if any, of
the related Available Funds in an aggregate amount equal to the Accrued
Certificate Interest on such Junior Certificates for such date, any remaining
undistributed Accrued Certificate Interest thereon from previous Distribution
Dates and the sum of the Allocable Shares of such Classes of Junior
Certificates. Amounts so distributed to holders of such Junior Certificates will
not be available to cover any delinquencies or any Realized Losses in respect of
subsequent Distribution Dates.
 
     Priority Among Junior Certificates.  As of the date of the initial issuance
of the Certificates, the aggregate Certificate Principal Balance of the Class
1-B3, Class 1-B4 and Class 1-B5 Certificates (in the case of Pool 1), Class
2-B3, Class 2-B4 and Class 2-B5 Certificates (in the case of Pool 2), Class
3-B3, Class 3-B4 and Class 3-B5 Certificates (in the case of Pool 3) and Class
4-B3, Class 4-B4 and Class 4-B5 Certificates (in the case of Pool 4), all of
which are subordinate in right of distribution to the related Certificates
offered hereby, will equal approximately 0.90%, 1.00%, 0.75% and 0.90%
respectively, of the initial aggregate Certificate Principal Balance of all of
the Pool 1, Pool 2, Pool 3 and Pool 4 Certificates, respectively, and
approximately 22.50%, 25.01%, 37.50% and 22.50%, respectively, of the initial
aggregate Certificate Principal Balance of all of the Pool 1 Junior, Pool 2
Junior, Pool 3 and Pool 4 Junior Certificates, respectively. On each
Distribution Date, the holders of any particular Class of Junior Certificates,
other than the related Class of Certificates bearing a B5 subdesignation, will
have a preferential right to receive the amounts then due them on such
Distribution Date out of Pool 1, Pool 2, Pool 3 or Pool 4 Available Funds, as
the case may be, prior to any distribution being made on such date on each Class
of related Certificates ranking junior to such Class. In addition, except as
described herein, the applicable Non-PO Percentage of the principal portion of
any Realized Loss with respect to a Mortgage Loan (other than a Debt Service
Reduction or Excess Loss) and any Class PO Deferred Payment Writedown Amount
will be allocated, to the extent set forth herein, in reduction of the Class
Certificate Principal Balances of the related Junior Certificates in inverse
order of priority of such Certificates. The effect of the allocation of such
Realized Losses and of the Class PO Deferred Payment Writedown Amount to a
related Class of Junior Certificates will be to reduce future distributions
allocable to such Class and increase the relative portion of distributions
allocable to more senior Classes of Certificates.
 
     In order to maintain the relative levels of subordination among the Junior
Certificates of each Mortgage Pool, the applicable Non-PO Percentage of
prepayments and certain other unscheduled recoveries of principal in respect of
the related Mortgage Loans (which will not be distributable to such Certificates
for at least the first five years after the Cut-Off Date, except as otherwise
described herein on or following the related Senior Final Distribution Date)
will not be distributable to the holders of any Class of related Class B
Certificates on any Distribution Date for which the related Class Prepayment
Distribution Trigger is not satisfied, except as described above. See 'Pool 1
Annex--Distributions on the Pool 1 Certificates--Principal', 'Pool 2 Annex--
 
                                      S-32
<PAGE>

Distributions on the Pool 2 Certificates--Principal', 'Pool 3
Annex--Distributions on the Pool 3 Certificates-- Principal' and 'Pool 4
Annex--Distributions on the Pool 4 Certificates--Principal.' If the Class
Prepayment Distribution Trigger is not satisfied with respect to any Class of
Class B Certificates in respect of either Mortgage Pool, the amortization of
more senior ranking Classes of related Junior Certificates may occur more
rapidly than would otherwise have been the case and, in the absence of losses in
respect of the Mortgage Loans in the related Mortgage Pool, the percentage
interest in the principal balance of such Mortgage Loans evidenced by such Class
B Certificates may increase.
 
     As a result of the subordination of any Class of Certificates, such Class
of Certificates will be more sensitive than more senior ranking Classes of
Certificates to the rate of delinquencies and defaults on the Mortgage Loans in
the related Mortgage Pool, and under certain circumstances investors in such
Certificates may not recover their initial investment.
 
RESTRICTIONS ON TRANSFER OF THE RESIDUAL CERTIFICATES
 
     The Residual Certificates will be subject to the restrictions on transfer
described in the Prospectus under 'Certain Federal Income Tax
Consequences--REMIC Certificates--Transfers of Residual Certificates--
Disqualified Organizations,' '--Foreign Investors' and '--Noneconomic Residual
Interests.' In addition, the Agreement provides that the Residual Certificates
may not be acquired by an ERISA Plan. The Residual Certificates will contain a
legend describing the foregoing restrictions.
 
                       GE CAPITAL MORTGAGE SERVICES, INC.
 
     The Company, a wholly-owned subsidiary of GE Capital Mortgage Corporation,
is a New Jersey corporation originally incorporated in 1949. The principal
executive office of the Company is located at Three Executive Campus, Cherry
Hill, New Jersey 08002, telephone (609) 661-6100. For a general description of
the Company and its activities, see 'GE Capital Mortgage Services, Inc.' in the
accompanying Prospectus.
 
             DELINQUENCY AND FORECLOSURE EXPERIENCE OF THE COMPANY
 
     The following delinquency tables set forth certain information concerning
the delinquency and foreclosure experience on one- to four-family conventional
residential mortgage loans serviced directly by the Company, excluding Home
Equity Loans (as defined in the Prospectus) and special loan portfolios which,
upon the Company's commencement of servicing responsibilities, consisted of
significant numbers of mortgage loans that were seriously delinquent or in
foreclosure (the 'Servicing Portfolio'). The Servicing Portfolio does not
include mortgage loans that were serviced or sub-serviced by others.
 
<TABLE>
<CAPTION>
                                   AS OF DECEMBER 31, 1995     AS OF DECEMBER 31, 1996     AS OF DECEMBER 31, 1997
                                   ------------------------    ------------------------    ------------------------
                                                 BY DOLLAR                   BY DOLLAR                   BY DOLLAR
                                   BY NO. OF     AMOUNT OF     BY NO. OF     AMOUNT OF     BY NO. OF     AMOUNT OF
                                     LOANS         LOANS         LOANS         LOANS         LOANS         LOANS
                                   ---------    -----------    ---------    -----------    ---------    -----------
                                                            (DOLLAR AMOUNTS IN THOUSANDS)
<S>                                <C>          <C>            <C>          <C>            <C>          <C>
Total portfolio..................   821,839     $91,977,411     785,928     $88,188,662     726,869     $83,535,531
                                   ---------    -----------    ---------    -----------    ---------    -----------
                                   ---------    -----------    ---------    -----------    ---------    -----------
Period of delinquency(1)
  30 to 59 days..................     3,813     $   408,131       3,362     $   353,209       2,687     $   281,657
  60 to 89 days..................     1,788         202,503       1,177         135,668         632          71,245
  90 days or more(2).............     6,437         919,526       6,867         892,643       5,442         662,342
                                   ---------    -----------    ---------    -----------    ---------    -----------
  Total delinquent loans.........    12,038     $ 1,530,160      11,406     $ 1,381,520       8,761     $ 1,015,244
                                   ---------    -----------    ---------    -----------    ---------    -----------
                                   ---------    -----------    ---------    -----------    ---------    -----------
  Percent of portfolio...........      1.46%           1.66%       1.45%           1.57%       1.21%           1.22%
</TABLE>
 
                                      S-33
<PAGE>
 
<TABLE>
<CAPTION>
                                                                 AS OF MARCH 31, 1997        AS OF MARCH 31, 1998
                                                               ------------------------    ------------------------
                                                                             BY DOLLAR                   BY DOLLAR
                                                               BY NO. OF     AMOUNT OF     BY NO. OF     AMOUNT OF
                                                                 LOANS         LOANS         LOANS         LOANS
                                                               ---------    -----------    ---------    -----------
                                                                          (DOLLAR AMOUNTS IN THOUSANDS)
<S>                                                            <C>          <C>            <C>          <C>
Total portfolio............................................     773,698     $87,145,975     704,085     $81,644,151
                                                               ---------    -----------    ---------    -----------
                                                               ---------    -----------    ---------    -----------
Period of delinquency(1)
  30 to 59 days............................................       2,699     $   296,630       2,347     $   248,451
  60 to 89 days............................................         560          65,934         562          60,476
  90 days or more(2).......................................       7,372         945,034       5,140         617,229
                                                               ---------    -----------    ---------    -----------
  Total delinquent loans...................................      10,631     $ 1,307,598       8,049     $   926,156
                                                               ---------    -----------    ---------    -----------
                                                               ---------    -----------    ---------    -----------
  Percent of portfolio.....................................        1.37%           1.50%       1.14%           1.13%
</TABLE>
 
- ------------------
(1) The indicated periods of delinquency are based on the number of days past
    due on a contractual basis, based on a 30-day month. No mortgage loan is
    considered delinquent for these purposes until the monthly anniversary of
    its contractual due date (e.g., a mortgage loan with a payment due on
    January 1 would first be considered delinquent on February 1). The
    delinquencies reported above were determined as of the dates indicated.
 
(2) Includes pending foreclosures.
 
<TABLE>
<CAPTION>
                                                                                AS OF DECEMBER 31,
                                                                     -----------------------------------------
                                                                        1995           1996           1997
                                                                     -----------    -----------    -----------
                                                                           (DOLLAR AMOUNTS IN THOUSANDS)
<S>                                                                  <C>            <C>            <C>
     Total portfolio...............................................  $91,977,411    $88,188,662    $83,535,531
     Foreclosures(1)...............................................      268,478        372,800        271,046
     Foreclosure ratio.............................................         0.29%          0.42%          0.32%
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                         AS OF MARCH 31,
                                                                                    --------------------------
                                                                                       1997           1998
                                                                                    -----------    -----------
                                                                                        (DOLLAR AMOUNTS IN
                                                                                            THOUSANDS)
<S>                                                                                 <C>            <C>
     Total portfolio............................................................    $87,145,975    $81,644,151
     Foreclosures(1)............................................................        404,910        233,929
     Foreclosure ratio..........................................................           0.46%          0.29%
</TABLE>
 
- ------------------
(1) Foreclosures represent the principal balance of mortgage loans secured by
    mortgaged properties, the title to which has been acquired by the Company,
    by investors or by an insurer following foreclosure or delivery of a deed in
    lieu of foreclosure and which had not been liquidated at the end of the
    period indicated. The length of time necessary to complete the liquidation
    of such mortgaged properties may be affected by prevailing economic
    conditions and the marketability of the mortgaged properties.
 
     The delinquency and foreclosure experience set forth above is historical
and is based on the servicing of mortgage loans that may not be representative
of the Mortgage Loans in either Mortgage Pool. Consequently, there can be no
assurance that the delinquency and foreclosure experience on the Mortgage Loans
in either Mortgage Pool will be consistent with the data set forth above. The
Servicing Portfolio, for example, includes mortgage loans having a wide variety
of payment characteristics (e.g., fixed-rate mortgage loans, adjustable rate
mortgage loans and graduated payment mortgage loans) and mortgage loans secured
by mortgaged properties in geographic locations that may not be representative
of the geographic locations of the Mortgage Loans in either Mortgage Pool. The
Servicing Portfolio also includes mortgage loans originated in accordance with
the Company's then applicable underwriting policies as well as mortgage loans
not originated in accordance with such policies but as to which the Company had
acquired the related servicing rights.
 
     The Servicing Portfolio includes many mortgage loans which have not been
outstanding long enough to have seasoned to a point where delinquencies would be
fully reflected. In the absence of substantial continuous additions of servicing
for recently originated mortgage loans to the Servicing Portfolio, it is
possible that the delinquency and foreclosure percentages experienced in the
future could be significantly higher than those indicated in the tables above.
 
                                      S-34


<PAGE>

                      THE POOLING AND SERVICING AGREEMENT
 
     The Certificates will be issued pursuant to the Agreement. The following
summaries describe certain provisions of the Agreement. See 'The Pooling and
Servicing Agreement' in the accompanying Prospectus for summaries of certain
other provisions of the Agreement. The summaries below do not purport to be
complete and are subject to, and qualified in their entirety by reference to,
the provisions of the Agreement. Where particular provisions or terms used in
the Agreement are referred to, such provisions or terms are as specified in the
Agreement.
 
SEPARATE TRUST FUNDS
 
     The Agreement establishes four separate Trust Funds, and each Certificate
Group represents the entire undivided beneficial interest in its respective
Trust Fund. The Trust Funds will be treated as distinct for all purposes of the
Agreement. The Trust Funds are not cross-collateralized. All distributions
payable on the Certificates within a Certificate Group will be payable solely
out of collections received on the Mortgage Loans in the related Trust Fund, and
all expenses relating or attributable to a specific Trust Fund will be borne by
that Trust Fund. The Trustee will act as the trustee for each Trust Fund.
 
ASSIGNMENT OF MORTGAGE LOANS
 
     At the time of issuance of the Certificates, the Company will assign the
Mortgage Loans for each Trust Fund to the Trustee, together with all principal
and interest received by the Company on or with respect to the Mortgage Loans on
or after the Cut-off Date other than principal and interest due and payable on
or before the Cut-off Date. The Trustee will, concurrently with such assignment,
execute, countersign and deliver the Certificates of each Certificate Group to
the Company in exchange for the related Mortgage Loans. Each Mortgage Loan will
be identified in a schedule appearing as an exhibit to the Agreement, which
schedule will specify the Mortgage Pool in which each Mortgage Loan is included.
Any substitute Mortgage Loan will be identified in an amended schedule
maintained by the Trustee. See 'The Pooling and Servicing Agreement-- Repurchase
or Substitution' in the Prospectus.
 
     In addition, at the time of issuance of the Certificates, the Company will
deliver to the Trustee, as to each Mortgage Loan other than a Cooperative Loan,
the related Mortgage Note (or a lost-note affidavit), any related assumption and
modification agreement and an assignment of Mortgage to the Trustee in
recordable form (other than in respect of unavailable recording information).
Except in the case of a Cooperative Loan, the Company will also deliver
originals of the recorded Mortgages, any intervening assignments of the
Mortgages and title insurance policies with respect to the Mortgage Loans, as
promptly as practicable, and in any case within thirty days, after receiving all
such documents from the applicable recording offices and title insurance
companies. Pending such delivery, the Company will retain and furnish to the
Trustee upon request copies of the Mortgages and intervening assignments of
Mortgage delivered for recording and the evidence of title insurance issued at
origination of the Mortgage Loans. The Company will retain and furnish to the
Trustee upon request any applicable evidence of primary mortgage insurance (any
policy with respect to such insurance being referred to herein as a 'Primary
Mortgage Insurance Policy') so long as such insurance remains in force. With
respect to any Mortgage Loans which are Cooperative Loans, the Company, as
seller, will cause to be delivered to the Trustee the related original
promissory note endorsed to the order of the Trustee (or a lost-note affidavit),
the original security agreement, the proprietary lease or occupancy agreement,
the recognition agreement, an executed financing statement by the Mortgagor and
the relevant stock certificate and related blank stock powers. The Company will
deliver to the Trustee a financing statement in fileable form evidencing the
assignment of the Company's security interest in the collateral securing each
Cooperative Loan to the Trustee. In addition, for each Cooperative Loan, the
Company will deliver any intervening assignments of the financing statement
executed by the Mortgagor as promptly as practicable, and in any event within
thirty days after receiving such documents from the applicable filing offices.
See 'The Pooling and Servicing Agreement--Assignment of Assets' in the
Prospectus.
 
     The Company may refrain from recording the assignments of Mortgage to the
Trustee and filing the financing statements with respect to any Cooperative Loan
in favor of the Trustee unless the Company or the Trustee obtains actual notice
or knowledge of the occurrence of any one or more of the following: (i) the
Company is not a wholly-owned direct or indirect subsidiary of General Electric
Company or General Electric Capital Corporation ('GE Capital') does not own
(directly or indirectly) at least two-thirds of the voting shares
 
                                      S-35
<PAGE>

of the capital stock of the Company, (ii) the long-term senior unsecured rating
of GE Capital is downgraded by Fitch IBCA, Inc. ('Fitch') or Standard & Poor's
Ratings Services, a division of The McGraw-Hill Companies, Inc. ('S&P'), below
their two highest long-term rating categories or such rating is withdrawn, (iii)
GE Capital is no longer obligated pursuant to the terms of a support agreement
to maintain the Company's net worth or liquidity (as such terms are defined in
such support agreement) at the levels specified therein, or that such support
agreement, including any amendment thereto, has been breached, terminated or
otherwise held to be unenforceable or (iv) such support agreement, including any
amendment thereto, is amended or modified (each such event described in (i),
(ii), (iii) and (iv) is referred to herein as a 'Trigger Event'); provided,
however, that such recording and filing will not be required if the Company
delivers to the Trustee a letter from each rating agency which originally rated
the Certificates to the effect that the failure to take such action would not
cause such rating agency to withdraw or reduce its then current ratings of such
Certificates. For purposes of the foregoing, the Company will be deemed to have
knowledge of any such downgrading if, in the exercise of reasonable diligence,
the Company has or should have had knowledge thereof. If a Trigger Event occurs,
the Company will also promptly furnish to the Trustee the documents retained by
the Company as described in the preceding paragraph.
 
     Although the recordation of the assignments of Mortgage or the filing of
financing statements relating to the Cooperative Loans to the Trustee is not
necessary to make the assignment of the Mortgage Loans to the Trustee effective,
if the Company were to make a sale, assignment, satisfaction or discharge of any
Mortgage Loan prior to recording or filing the assignments to the Trustee, the
other parties to such sale, assignment, satisfaction or discharge might have
rights superior to those of the Trustee. If the Company were to do so without
authority under the Agreement, it would be liable to the Certificateholders.
Moreover, if insolvency proceedings relating to the Company were commenced prior
to such recording or filing, creditors or the trustee-in-bankruptcy may be able
to assert rights in the affected Mortgage Loans superior to those of the
Trustee.
 
SERVICING ARRANGEMENT WITH RESPECT TO THE MORTGAGE LOANS
 
     It is expected that the Company will directly service at least 86%, 94%,
68% and 91% (by aggregate Scheduled Principal Balance as of the Cut-off Date) of
the Mortgage Loans in Pool 1, Pool 2, Pool 3 and Pool 4, respectively, and will
function as master servicer with respect to the remaining Mortgage Loans in each
Mortgage Pool pursuant to a Direct Master Servicing Arrangement (as defined in
the accompanying Prospectus). Such master-serviced loans will be directly
serviced by entities which originated or acquired those loans and sold them to
the Company. The Agreement permits the Company to use other primary servicing
agents from time to time. See 'Servicing of the Mortgage Loans and Contracts' in
the accompanying Prospectus.
 
     The Agreement permits the Company, at its option, to grant certain rights
in connection with the foreclosure of defaulted Mortgage Loans in a Mortgage
Pool to the holders of the related Class B5 Certificates and, when such
Certificates are no longer outstanding, to the holders of the related Class B4
Certificates. See 'Servicing of the Mortgage Loans and Contracts--Collection and
Other Servicing Procedures' in the Prospectus.
 
COLLECTION ACCOUNTS
 
     The Agreement provides that if the Company or the Trustee obtains actual
notice or knowledge of the occurrence of a Trigger Event or the downgrade by S&P
of GE Capital's short-term senior unsecured rating below A-1+, the Company will,
in lieu of the Loan Payment Record described under the caption 'Servicing of the
Mortgage Loans and Contracts--Loan Payment Record' in the accompanying
Prospectus, establish and maintain or cause to be established and maintained a
separate account (each a 'Collection Account') for the Certificates relating to
each Mortgage Pool for the collection of payments on the Mortgage Loans in such
Mortgage Pool; provided, however, that such action will not be required if the
Company delivers to the Trustee a letter from each rating agency which
originally rated the related Certificates to the effect that the failure to take
such action would not cause such rating agency to withdraw or reduce its then
current rating of such Certificates. If established, the Collection Accounts
would be (i) maintained with a depository institution the debt obligations of
which are, at the time of any deposit therein, rated by each of Fitch and S&P in
one of its two highest long-term rating categories and by S&P in its highest
short-term rating category, (ii) an account or accounts the deposits in which
are fully insured by either the Bank Insurance Fund (the 'BIF') of the Federal
Deposit Insurance Corporation (the 'FDIC') or the Savings Association Insurance
Fund (as successor to the Federal Savings and Loan Insurance Corporation) of the
FDIC (the 'SAIF'), (iii) an account or accounts with a depository institution,
which accounts are insured by the BIF or SAIF (to the limits established by the
FDIC), and which uninsured deposits are invested in United States government
securities or other high quality investments,
 
                                      S-36
<PAGE>

or are otherwise secured to the extent required by Fitch and S&P such that, as
evidenced by an opinion of counsel, the holders of the related Certificates have
a claim with respect to the funds in the account or a perfected first security
interest against any collateral securing such funds that is superior to claims
of any other depositors or creditors of the depository institution with which
the account is maintained, (iv) a trust account maintained with the corporate
trust department of a federal or state chartered depository institution or of a
trust company with trust powers and acting in its fiduciary capacity for the
benefit of the Trustee or (v) an account as will not cause either Fitch or S&P
to downgrade or withdraw its then current ratings assigned to the related
Certificates. If a Collection Account is established for the Certificates
relating to a Mortgage Pool, all amounts credited or debited to the related Loan
Payment Record in the manner described under the caption 'Servicing of the
Mortgage Loans and Contracts--Loan Payment Record' will instead be deposited in
or withdrawn from the related Collection Account. See 'Servicing of the Mortgage
Loans and Contracts--Loan Payment Record' in the accompanying Prospectus.
 
     Prior to the occurrence of a Trigger Event, the Company will transfer to
the Certificate Account established with respect to each Trust Fund, in next-day
funds, the related Available Funds for the related Distribution Date on the
business day immediately preceding such Distribution Date.
 
ADVANCES
 
     In the event that any Mortgagor fails to make any payment of principal or
interest required under the terms of a Mortgage Loan, the Company will advance
the entire amount of such payment, net of the applicable Servicing Fee, less the
amount of any such payment that the Company reasonably believes will not be
recoverable out of liquidation proceeds or otherwise. The amount of any
scheduled payment required to be advanced by the Company will not be affected by
any agreement between the Company and a Mortgagor providing for the postponement
or modification of the due date or amount of such scheduled payment. The Company
will be entitled to reimbursement for any such advance from related late
payments on the Mortgage Loan as to which such advance was made. Furthermore, in
the event that any Mortgage Loan as to which such an advance has been made is
foreclosed while in a Trust Fund, the Company will be entitled to reimbursement
for such advance from related liquidation proceeds or insurance proceeds prior
to payment to Certificateholders of the related Certificate Group of the
Scheduled Principal Balance of such Mortgage Loan plus accrued interest at the
Mortgage Rate, net of the applicable Servicing Fee.
 
     If the Company makes a good faith judgment that all or any portion of any
advance of delinquent principal and interest made by it with respect to any
Mortgage Loan may not ultimately be recoverable from related liquidation or
insurance proceeds or other collections on such Mortgage Loan (a 'Nonrecoverable
Advance'), the Company will so notify the Trustee and the Company will be
entitled to reimbursement for such Nonrecoverable Advance from recoveries on all
other Mortgage Loans in the related Mortgage Pool. The Company's judgment that
it has made a Nonrecoverable Advance with respect to any Mortgage Loan will be
based upon its assessment of the value of the related Mortgaged Property and
such other facts and circumstances as it may deem appropriate in evaluating the
likelihood of receiving liquidation proceeds, net of expenses, equal to or
greater than the aggregate amount of unreimbursed advances made with respect to
such Mortgage Loan.
 
     As a result of the subordination of the Junior Certificates, the effect of
reimbursements to the Company of previous advances from liquidation or insurance
proceeds and of Nonrecoverable Advances will generally be borne by the holders
of the Junior Certificates in respect of the related Mortgage Pool (to the
extent then outstanding) in inverse order of priority before they are borne by
holders of the related Senior Certificates.
 
     The Trustee will make advances of delinquent principal and interest
payments in the event of a failure by the Company to perform its obligation to
do so, provided that the Trustee will not make such advance to the extent that
it reasonably believes the payment will not be recoverable to it out of related
liquidation or insurance proceeds or otherwise. The Trustee will be entitled to
reimbursement for advances in a manner similar to the Company's entitlement.
 
PURCHASES OF DEFAULTED MORTGAGE LOANS
 
     Under the Agreement, the Company will have the option (but not the
obligation) to purchase any Mortgage Loan as to which the Mortgagor has failed
to make unexcused payment in full of three or more scheduled payments of
principal and interest (a 'Defaulted Mortgage Loan'). Any such purchase will be
for a price equal to 100% of the outstanding principal balance of such Mortgage
Loan, plus accrued and unpaid interest thereon at the Net Mortgage Rate minus
the Supplemental Servicing Fee Rate (as defined below), less any amounts
 
                                      S-37
<PAGE>

representing previously unreimbursed advances. The purchase price for any
Defaulted Mortgage Loan will be deposited in the applicable Certificate Account
on the business day prior to the Distribution Date on which the proceeds of such
purchase are to be distributed to the related Certificateholders.
 
SERVICING COMPENSATION, COMPENSATING INTEREST AND PAYMENT OF EXPENSES
 
     The Company's primary compensation for its servicing activities will come
from the payment to it, with respect to each interest payment on any Mortgage
Loan, of a servicing fee (the 'Servicing Fee') equal to the sum of a base fee
(the 'Base Servicing Fee') and a supplemental fee, if any (the 'Supplemental
Servicing Fee'). As to each Mortgage Loan, the rate at which the Base Servicing
Fee is payable (the 'Base Servicing Fee Rate') will be a fixed rate per annum of
the outstanding principal balance of such Mortgage Loan, expected to range, in
the case of each of the four Mortgage Pools, from approximately 0.20% to 0.29%
with an anticipated initial weighted average rate of between approximately 0.23%
and 0.28%. As to each Mortgage Loan, the rate at which the Supplemental
Servicing Fee is payable (the 'Supplemental Servicing Fee Rate') will be a fixed
rate per annum of the outstanding principal balance of the Mortgage Loan equal
to the excess, if any, of the Net Mortgage Rate over 6.75% in the case of Pool 1
Mortgage Loans, Pool 2 Mortgage Loans and Pool 4 Mortgage Loans and 6.50% in the
case of Pool 3 Mortgage Loans. The Supplemental Servicing Fee Rate is expected
to range, in the case of Pool 1, from approximately 0% to 1.9%, with an
anticipated initial weighted average rate with respect to Pool 1 of between
approximately 0.39% and 0.40%. The Supplemental Servicing Fee Rate is expected
to range, in the case of Pool 2, from approximately 0% to 1.8%, with an
anticipated initial weighted average rate with respect to Pool 2 of between
approximately 0.44% and 0.47%. The Supplemental Servicing Fee Rate is expected
to range, in the case of Pool 3, from approximately 0% to 1.8%, with an
anticipated initial weighted average rate with respect to Pool 3 of between
approximately 0.29% and 0.33%. The supplemental Servicing Fee Rate is expected
to range, in the case of Pool 4, from approximately 0% to 1.8%, with an
anticipated initial weighted average rate with respect to Pool 4 of between
approximately 0.36% and 0.40%. The aggregate servicing compensation to the
Company could vary depending on the prepayment experience of the Mortgage Loans.
The servicing compensation of any direct servicer of any Mortgage Loan will be
paid out of the related Base Servicing Fee, and the Company will retain the
balance as part of its servicing compensation (subject to its obligation to make
Compensating Interest Payments, as described below).
 
     To the extent any voluntary prepayment results in an Interest Shortfall in
respect of a Mortgage Loan in a Mortgage Pool (as described in clauses (i) and
(ii) of the definition thereof) allocable to the related Certificateholders with
respect to any Distribution Date, the Company will be obligated to remit an
amount (such amount, a 'Compensating Interest Payment') sufficient to pass
through to the related Certificateholders the full amount of interest to which
they would have been entitled in the absence of such prepayments, but in no
event greater than the lesser of (a) 1/12th of 0.125% of the Pool Scheduled
Principal Balance of the related Mortgage Pool for such Distribution Date and
(b) the aggregate amount received by the Company on account of its Base
Servicing Fees in respect of the related Mortgage Pool (net of any servicing
compensation paid to any direct servicer) in connection with such Distribution
Date. The Compensating Interest Payment with respect to a Certificate Group will
be determined solely by reference to the related Mortgage Pool. Because the net
amount received by the Company on account of its Base Servicing Fee is generally
less in the case of Mortgage Loans master-serviced by the Company than in the
case of Mortgage Loans the Company services directly, the amounts available for
any Compensating Interest Payment with respect to any Distribution Date and a
Mortgage Pool will generally decrease to the extent the proportion of
Outstanding Mortgage Loans in such Mortgage Pool master-serviced by the Company
increases, and increase to the extent the proportion of such Mortgage Loans
decreases. It is expected that the Company will master service no more than 14%,
6%, 32% and 9% (by aggregate Scheduled Principal Balance as of the Cut-off Date)
of the Mortgage Loans in Pool 1, Pool 2, Pool 3 and Pool 4, respectively. These
percentages could vary over time, however, if Mortgage Loans directly serviced
by the Company experience a disproportionately high or low level of prepayments
or defaults relative to Mortgage Loans master-serviced by the Company. In
addition, the proportion of master-serviced Mortgage Loans could be affected as
a result of (i) the exercise by the Company of its right under the Agreement to
contract with third parties to directly service Mortgage Loans, with the Company
becoming the master servicer of such Mortgage Loans, or (ii) the substitution of
any Mortgage Loans under the Agreement.
 
     The Company will retain, as additional servicing compensation in respect of
a Trust Fund, amounts in respect of interest paid by borrowers in connection
with any principal prepayment in full received by the
 
                                      S-38
<PAGE>

Company (or, with respect to Mortgage Loans master-serviced by the Company, of
which the Company receives notice) from the first day through the fifteenth day
of each month, other than the month of the Cut-off Date.
 
     The Company will pay expenses incurred in connection with its
responsibilities under the Agreement, subject to limited reimbursement as
described herein and in the accompanying Prospectus. See 'Servicing of the
Mortgage Loans and Contracts--Servicing and Other Compensation and Payment of
Expenses' in the accompanying Prospectus for information regarding other
possible compensation to the Company.
 
TRUSTEE
 
     The Trustee for each Trust Fund will be State Street Bank and Trust
Company, a Massachusetts banking corporation organized and existing under the
laws of the Commonwealth of Massachusetts. The Corporate Trust Office of the
Trustee is located at 225 Franklin Street, Boston, Massachusetts.
 
TERMINATION
 
     The Company may, at its option, repurchase all of the Mortgage Loans
underlying a Certificate Group and thereby effect the early retirement of such
Certificate Group and cause the termination of the related Trust Fund and the
REMIC or REMICs constituted by such Trust Fund, on any Distribution Date after
the aggregate Scheduled Principal Balance of the Mortgage Loans in such Trust
Fund is less than 10% of the aggregate Scheduled Principal Balance thereof as of
the Cut-off Date, provided that the Trustee has received an opinion of counsel
that the exercise of such option will not subject such Trust Fund to a tax on
prohibited transactions or result in the failure of such Trust Fund to qualify
as a REMIC.
 
     Any such repurchase by the Company of the assets included in a Trust Fund
will be at a price equal to the sum of (a) 100% of the unpaid principal balance
of each Mortgage Loan in such Trust Fund (other than a Mortgage Loan described
in clause (b)) as of such date, plus accrued and unpaid interest thereon at the
related Net Mortgage Rate minus the Supplemental Servicing Fee Rate (less any
amounts representing previously unreimbursed advances), and (b) the appraised
value of any property acquired in respect of a Mortgage Loan included in such
Trust Fund (less any amounts representing previously unreimbursed advances in
respect thereof and a good faith estimate of liquidation expenses). The related
Available Funds on the final Distribution Date will be allocated to each Class
of Certificates of the related Certificate Group in accordance with the
priorities described under 'Pool 1 Annex--Distributions on the Pool 1
Certificates--Allocation of Pool 1 Available Funds,' 'Pool 2
Annex--Distributions on Pool 2 Certificates--Allocation of Pool 2 Available
Funds,' 'Pool 3 Annex--Distributions on the Pool 3 Certificates--Allocation of
Pool 3 Available Funds' and 'Pool 4 Annex-- Distributions on the Pool 4
Certificates--Allocation of Pool 4 Available Funds' herein. Accordingly, if the
Available Funds in respect of a Mortgage Pool on the final Distribution Date are
less than the aggregate Certificate Principal Balance of all outstanding
Certificates of the related Certificate Group plus accrued and unpaid interest
thereon, then in the event that such Distribution Date occurs (x) prior to the
related Cross-Over Date, the resulting shortfall will be borne by the
Certificates of the related Certificate Group in inverse order of their related
payment priorities, and (y) on or after the related Cross-Over Date, such
shortfall will be borne pro rata among the Certificates of the related
Certificate Group.
 
     In no event will any Trust Fund created by the Agreement continue beyond
the expiration of 21 years from the death of the last survivor of a certain
person named in such Agreement.
 
VOTING RIGHTS
 
     All voting rights and remedies granted to Certificateholders under the
Agreement relate to each individual Certificate Group and Trust Fund.
Consequently, the holders of the requisite percentage of Certificates of a
Certificate Group may exercise such rights and remedies with respect to the
related Trust Fund. Votes allocated to the Certificates of a Certificate Group
under the Agreement will be allocated among the Classes of such Certificate
Group (and among the Certificates within each such Class) in proportion to their
Class Certificate Principal Balances or Certificate Principal Balances, as the
case may be. In the case of the Pool 1 Certificates, the Class 1-A6 Certificates
will be allocated 1% of the votes allocable to the Pool 1 Certificates and the
remainder of the Pool 1 Certificates in the aggregate will be allocated 99%. In
the case of the Pool 2 Certificates, the Class 2-A3 Certificates in the
aggregate will be allocated 2% of the votes allocable to the Pool 2 Certificates
and the remainder of the Pool 2 Certificates in the aggregate will be allocated
98%.
 
                                      S-39

<PAGE>

                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
     With respect to the Pool 1 Trust Fund, an election will be made to treat
each of the Pool 1 Upper-Tier REMIC and the Pool 1 Lower-Tier REMIC as a REMIC
for federal income tax purposes. With respect to the Pool 2 Trust Fund, an
election will be made to treat each of the Pool 2 Upper-Tier REMIC and the Pool
2 Lower-Tier REMIC as a REMIC for federal income tax purposes. An election will
be made to treat the Pool 3 Trust Fund as a REMIC for federal income tax
purposes. An election will be made to treat the Pool 4 Trust Fund as a REMIC for
federal income tax purposes.
 
     The Certificates of each Certificate Group, other than the related Residual
Certificates, will be designated as 'regular interests' in the related REMIC and
the Residual Certificates of each Certificate Group will be designated as the
'residual interest' in the related REMIC.
 
     Regular Certificates.  The Regular Certificates generally will be treated
as debt instruments issued by the related REMIC for federal income tax purposes.
Income on Regular Certificates must be reported under an accrual method of
accounting. Certain Classes of Regular Certificates may be issued with original
issue discount in an amount equal to the excess of their initial respective
Class Certificate Principal Balances (plus accrued interest from the last day
preceding the issue date corresponding to a Distribution Date through the issue
date) over their issue prices (including all accrued interest). The Class 1-A6
and Class 2-A3 Certificates will likely be treated as being issued, and the
Accrual Certificates will be issued, with original issue discount in an amount
equal to the excess of (i) the sum of all payments thereon determined under the
Prepayment Assumption, over (ii) its issue price (including accrued interest).
The prepayment assumption that is to be used in determining the rate of accrual
of original issue discount and whether the original issue discount is considered
de minimis, and that may be used by a holder of a Regular Certificate to
amortize premium, will be 250% (in the case of Pool 1) and 275% (in the case of
Pool 2, Pool 3 and Pool 4) of the Prepayment Assumption. No representation is
made as to the actual rate at which the Mortgage Loans will prepay. See 'Certain
Federal Income Tax Consequences-- REMIC Certificates--Income from Regular
Certificates' in the accompanying Prospectus.
 
     The requirement to report income on a Regular Certificate under an accrual
method may result in the inclusion of amounts in income that are not currently
distributed in cash. In the case of a Junior Certificate, accrued income may
exceed cash distributions as a result of the preferential right of Classes of
related Senior Certificates to receive cash distributions in the event of losses
or delinquencies on related Mortgage Loans. Prospective purchasers of Junior
Certificates should consult their tax advisors regarding the timing of income
from those Certificates and the timing and character of any deductions that may
be available with respect to principal or accrued interest that is not paid. See
'Certain Federal Income Tax Consequences--REMIC Certificates--Income from
Regular Certificates' in the accompanying Prospectus.
 
     Residual Certificates.  The holders of the Residual Certificates must
include the taxable income of the related REMIC in their federal taxable income.
The resulting tax liability of the holders may exceed cash distributions to such
holders during certain periods. All or a portion of the taxable income from a
Residual Certificate recognized by a holder may be treated as 'excess inclusion'
income, which with limited exceptions is subject to U.S. federal income tax in
all events.
 
     Under Treasury regulations, the Residual Certificates may be considered to
be 'noneconomic residual interests' at the time they are issued, in which event
certain transfers thereof would be disregarded for federal income tax purposes.
 
     Prospective purchasers of a Residual Certificate should consider carefully
the tax consequences of an investment in Residual Certificates discussed in the
Prospectus and should consult their own tax advisors with respect to those
consequences. See 'Certain Federal Income Tax Consequences--REMIC
Certificates--Income from Residual Certificates;--Taxation of Certain Foreign
Investors;--Servicing Compensation and Other REMIC Pool Expenses;--Transfers of
Residual Certificates' in the accompanying Prospectus.
 
                              ERISA CONSIDERATIONS
 
     As described in the Prospectus under 'ERISA Considerations,' the Employee
Retirement Income Security Act of 1974, as amended ('ERISA'), and the Code
impose certain duties and restrictions on any person which is an employee
benefit plan within the meaning of Section 3(3) of ERISA or a plan subject to
Section 4975 of the Code or any person utilizing the assets of such employee
benefit plan or other plan (an 'ERISA Plan') and certain persons who perform
services for ERISA Plans. For example, unless exempted, an investment by an
 
                                      S-40
<PAGE>

ERISA Plan in the Certificates offered hereby may constitute or give rise to a
prohibited transaction under ERISA or Section 4975 of the Code.
 
     The United States Department of Labor (the 'DOL') has issued to CSFB an
individual administrative exemption, Prohibited Transaction Exemption 89-90 (54
Fed. Reg. 42597, October 17, 1989) (the 'CSFB Exemption'), has issued to
Greenwich Capital an individual administrative exemption, Prohibited Transaction
Exemption 90-59 (55 Fed. Reg. 36724, September 6, 1990), as amended (the
'Greenwich Capital Exemption') and has issued to Lehman an individual
administrative exemption, Prohibited Transaction Exemption 91-14 (56 Fed. Reg.
7413, February 22, 1991) (the 'Lehman Exemption' and, together with the
Greenwich Capital Exemption and the CSFB Exemption, the 'Exemptions'), from
certain of the prohibited transaction provisions of ERISA with respect to the
initial purchase, the holding, and the subsequent resale by an ERISA Plan of
certificates in pass-through trusts that meet the conditions and requirements of
the Exemptions. The applicable Exemption might apply to the acquisition, holding
and resale of the Senior Certificates of each Certificate Group offered hereby
by an ERISA Plan, provided that specified conditions are met.
 
     Among the conditions which would have to be satisfied for the Exemptions to
apply to the acquisition by an ERISA Plan of such Senior Certificates are the
following: (i) Greenwich Capital, Lehman or CSFB, as applicable, is the sole
underwriter or the manager or co-manager of the underwriting syndicate, for such
Certificates, (ii) such Certificates are rated in one of the three highest
generic rating categories by Fitch, S&P, Moody's Investors Service, Inc. or Duff
& Phelps Credit Rating Co. at the time of the acquisition of such Certificates
by the ERISA Plan, (iii) such Certificates represent a beneficial ownership
interest in, among other things, obligations that bear interest or are purchased
at a discount and which are secured by single-family residential, multifamily
residential or commercial real property (including obligations secured by
leasehold interests on commercial real property), or fractional undivided
interests in such obligations, (iv) such Certificates are not subordinated to
other certificates issued by the related Trust Fund in respect of the relevant
Mortgage Pool, (v) the ERISA Plan investing in such Certificates is an
'accredited investor' as defined in Rule 501 (a)(1) of Regulation D of the
Securities and Exchange Commission under the Securities Act of 1933, (vi) the
acquisition of such Certificates is on terms that are at least as favorable to
the ERISA Plan as they would be in an arm's length transaction with an unrelated
third party, (vii) the Trustee is not an affiliate of any member of the
'Restricted Group' (as defined below) and (viii) the compensation to Greenwich
Capital, Lehman or CSFB represents not more than reasonable compensation for
underwriting such Certificates, the proceeds to the Company pursuant to the
assignment of the related Mortgage Loans (or interests therein) to the Trustee
represent not more than the fair market value of such Mortgage Loans (or
interests) and the sum of all payments made to and retained by the Company
represents not more than reasonable compensation for the Company's services
under the Agreement and reimbursement of the Company's reasonable expenses in
connection therewith.
 
     In addition, if certain additional conditions specified in the Exemptions
are satisfied, the Exemptions may provide an exemption from the prohibited
transaction provisions of ERISA relating to possible self-dealing transactions
by fiduciaries who have discretionary authority, or render investment advice,
with respect to ERISA Plan assets used to purchase the Senior Certificates of
any Certificate Group offered hereby if the fiduciary (or its affiliate) is an
obligor on any of the Mortgage Loans held in the relevant Mortgage Pool.
 
     The Exemptions would not be available with respect to ERISA Plans sponsored
by any of the following entities (or any affiliate of any such entity): (i) the
Company, (ii) Greenwich Capital, Lehman or CSFB, as applicable, (iii) the
Trustee, (iv) any entity that provides insurance or other credit support to the
Trust Fund in respect of the relevant Mortgage Pool or (v) any obligor with
respect to Mortgage Loans included in the relevant Mortgage Pool constituting
more than five percent of the aggregate unamortized principal balance of the
assets in such Mortgage Pool (the 'Restricted Group'). Before purchasing any
Certificate offered hereby, a fiduciary of an ERISA Plan should make its own
determination as to the availability of the exemptive relief provided in the
Exemption or the availability of any other prohibited transaction exemptions,
and whether the conditions of any such exemption will be applicable to such
Certificate.
 
     However, the Exemptions do not apply to the initial purchase, the holding
or the subsequent resale of the Junior Certificates offered hereby because such
Certificates are subordinate to certain other Classes of Certificates of the
related Certificate Group. ACCORDINGLY, ERISA PLANS MAY NOT PURCHASE THE JUNIOR
CERTIFICATES OFFERED HEREBY, except that any insurance company may purchase such
Junior Certificates with assets of its general account if the exemptive relief
granted by the DOL for transactions involving insurance company general accounts
in Prohibited Transaction Exemption 95-60, 60 Fed. Reg. 35925 (July 12, 1995) is
 
                                      S-41
<PAGE>

available with respect to such investment. Any insurance company proposing to
purchase such Certificates for its general account should consider whether such
relief would be available.
 
     Any fiduciary of an ERISA Plan considering whether to purchase any
Certificate offered hereby should not only consider the applicability of
exemptive relief, but should also carefully review with its own legal advisors
the applicability of the fiduciary duty and prohibited transaction provisions of
ERISA and the Code to such investment. See 'ERISA Considerations' in the
accompanying Prospectus.
 
     A qualified pension plan or other entity that is exempt from federal income
taxation pursuant to Section 501 of the Code (a 'Tax-Exempt Investor')
nonetheless will be subject to federal income taxation to the extent that its
income is 'unrelated business taxable income' within the meaning of Section 512
of the Code. The Residual Certificates of each Certificate Group constitute the
residual interest in the REMIC constituted by the related Trust Fund and all
'excess inclusions' allocated to the related Residual Certificates, if held by a
Tax-Exempt Investor, will be considered 'unrelated business taxable income' and
thus will be subject to federal income tax. See 'Certain Federal Income Tax
Consequences--Residual Certificates' herein and 'Certain Federal Income Tax
Consequences--Federal Income Tax Consequences for REMIC Certificates--Taxation
of Residual Certificates' in the Prospectus.
 
     The Agreement will contain certain restrictions on the transferability of
the Junior Certificates offered hereby. See 'Pool 1 Annex--Description of the
Certificates--Book-Entry Certificates' and '--Non-Book-Entry Certificates,'
'Pool 2 Annex--Description of the Certificates--Book-Entry Certificates' and
'--Non-Book-Entry Certificates,' 'Pool 3 Annex--Description of the
Certificates--Book-Entry Certificates' and '-- Non-Book-Entry Certificates,' and
'Pool 4 Annex--Description of the Certificates--Book-Entry Certificates' and
'--Non-Book-Entry Certificates' herein. In addition, the Agreement provides that
the Residual Certificates may not be acquired by or transferred to an ERISA
Plan. See 'Description of the Certificates--Restrictions on Transfer of the
Residual Certificates' herein.
 
                            LEGAL INVESTMENT MATTERS
 
     The Senior Certificates offered hereby and the Class 1-M, Class 2-M, Class
3-M and Class 4-M Certificates will constitute 'mortgage related securities' for
purposes of the Secondary Mortgage Market Enhancement Act of 1984 ('SMMEA'),
and, as such, are legal investments for certain entities to the extent provided
in SMMEA. However, institutions subject to the jurisdiction of the Office of the
Comptroller of the Currency, the Board of Governors of the Federal Reserve
System, the Federal Deposit Insurance Corporation, the Office of Thrift
Supervision, the National Credit Union Administration or state banking or
insurance authorities should review applicable rules, supervisory policies and
guidelines of these agencies before purchasing any of the Certificates, as
certain Classes may be deemed to be unsuitable investments under one or more of
these rules, policies and guidelines and certain restrictions may apply to
investments in other Classes. It should also be noted that certain states have
enacted legislation limiting to varying extents the ability of certain entities
(in particular insurance companies) to invest in mortgage related securities.
Investors should consult with their own legal advisors in determining whether
and to what extent the Certificates constitute legal investments for such
investors. See 'Legal Investment Matters' in the accompanying Prospectus.
 
     The Junior Certificates offered hereby other than the Class 1-M, Class 2-M,
Class 3-M and Class 4-M Certificates (the 'Non-SMMEA Certificates') will not
constitute 'mortgage related securities' under SMMEA. The appropriate
characterization of the Non-SMMEA Certificates under various legal investment
restrictions, and thus the ability of investors subject to these restrictions to
purchase such Certificates, may be subject to significant interpretive
uncertainties. All investors whose investment authority is subject to legal
restrictions should consult their own legal advisors to determine whether, and
to what extent, such Certificates will constitute legal investments for them.
 
     The Company makes no representation as to the proper characterization of
the Non-SMMEA Certificates for legal investment of financial institution
regulatory purposes, or as to the ability of particular investors to purchase
such Certificates under applicable legal investment restrictions. The
uncertainties described above (and any unfavorable future determinations
concerning legal investment or financial institution regulatory characteristics
of such Certificates) may adversely affect the liquidity of such Certificates.
 
                                      S-42
<PAGE>

                              PLAN OF DISTRIBUTION
 
     Subject to the terms and conditions set forth in the Underwriting Agreement
between the Company and Greenwich Capital, the Pool 1 Certificates offered
hereby are being purchased from the Company by Greenwich Capital upon issuance.
Subject to the terms and conditions set forth in the Underwriting Agreement
between the Company and Lehman, the Pool 2 Certificates offered hereby are being
purchased from the Company by Lehman upon issuance. Subject to the terms and
conditions set forth in the Underwriting Agreement between the Company and CSFB,
the Pool 3 and Pool 4 Certificates offered hereby are being purchased from the
Company by CSFB upon issuance. Distribution of the Certificates offered hereby
will be made by the respective Underwriters from time to time in negotiated
transactions or otherwise at varying prices to be determined at the time of
sale. Proceeds to the Company from the sale of the Certificates offered hereby
will be approximately 99.363090% of the aggregate initial Class Certificate
Principal Balance of the Certificates offered hereby, plus accrued interest
thereon from the Cut-off Date to the Closing Date, but before deducting issuance
expenses payable by the Company. In connection with the purchase and sale of the
Certificates offered hereby, the Underwriters may be deemed to have received
compensation from the Company in the form of underwriting discounts.
 
     The Company has agreed to indemnify the Underwriters against, or make
contributions to the Underwriters with respect to, certain liabilities,
including liabilities under the Securities Act of 1933, as amended.
 
     Greenwich Capital has entered into an agreement with the Company to
purchase the Pool 1 Junior Certificates that are not offered hereby
simultaneously with the purchase of the Pool 1 Certificates offered hereby,
subject to certain conditions.
 
     Lehman has entered into an agreement with the Company to purchase the Pool
2 Junior Certificates that are not offered hereby simultaneously with the
purchase of the Pool 2 Certificates offered hereby, subject to certain
conditions.
 
     CSFB has entered into an agreement with the Company to purchase the Pool 3
and Pool 4 Junior Certificates that are not offered hereby simultaneously with
the purchase of the Pool 3 and Pool 4 Certificates offered hereby, subject to
certain conditions.
 
                              CERTIFICATE RATINGS
 
     It is a condition of issuance of the Certificates that the Senior
Certificates offered hereby (other than the Class 1-A6 and Class 2-A3
Certificates) be rated 'AAA' by each of Fitch and S&P, that the Class 1-A6 and
Class 2-A3 Certificates be rated 'AAA' by Fitch and 'AAAr' by S&P, that the
Class 1-M, Class 1-B1 and Class 1-B2 Certificates, the Class 2-M, Class 2-B1 and
Class 2-B2 Certificates and the Class 4-M, Class 4-B1 and Class 4-B2
Certificates be rated 'AA,' 'A' and 'BBB,' in each case, respectively, by Fitch
and that the Class 3-M, Class 3-B1 and Class 3-B2 Certificates be rated 'AA,'
'A' and 'BBB,' respectively, by S&P.
 
     The ratings assigned by Fitch to mortgage pass-through certificates address
the likelihood of the receipt by Certificateholders of all distributions to
which such Certificateholders are entitled. Fitch's ratings address the
structural and legal aspects associated with the Certificates, including the
nature of the underlying mortgage loans. Fitch's ratings on mortgage
pass-through certificates do not represent any assessment of the likelihood or
rate of principal prepayments. The ratings do not address the possibility that
Certificateholders might suffer a lower than anticipated yield.
 
     S&P's ratings on mortgage pass-through certificates address the likelihood
of receipt by Certificateholders of payments required under the operative
agreements. S&P's ratings take into consideration the credit quality of the
mortgage pool including any credit support providers, structural and legal
aspects associated with the certificates, and the extent to which the payment
stream of the mortgage pool is adequate to make payment required under the
certificates. S&P's ratings on the certificates do not, however, constitute a
statement regarding the frequency of prepayments on the mortgage loans. S&P's
rating does not address the possibility that investors may suffer a lower than
anticipated yield. The 'r' symbol is appended to the rating by S&P of those
Certificates that S&P believes may experience high volatility or high
variability in expected returns due to non-credit risks. The absence of the 'r'
symbol in the ratings of other Certificates offered hereby should not be taken
as an indication that such Certificates will exhibit no volatility or
variability in return.
 
                                      S-43
<PAGE>

     The ratings of the Certificates should be evaluated independently from
similar ratings on other types of securities. A security rating is not a
recommendation to buy, sell or hold securities and may be subject to revision or
withdrawal at any time by the assigning rating agency.
 
     The Company has not requested a rating of the Certificates offered hereby
by any rating agency other than Fitch and S&P and the Company has not provided
information relating to the Certificates offered hereby or the Mortgage Loans to
any rating agency other than Fitch and S&P. However, there can be no assurance
as to whether any other rating agency will rate the Certificates offered hereby
or, if another rating agency rates such Certificates, what rating would be
assigned to such Certificates by such rating agency. Any such unsolicited rating
assigned by another rating agency to the Certificates offered hereby may be
lower than the rating assigned to such Certificates by either, or both, of Fitch
and S&P.
 
                                 LEGAL MATTERS
 
     Certain legal matters in respect of the Certificates will be passed upon
for the Company by Cleary, Gottlieb, Steen & Hamilton, New York, New York, and
for the Underwriters by Brown & Wood LLP, Washington, D.C.
 
                                      S-44

<PAGE>

                                  POOL 1 ANNEX

             THE POOL 1 MORTGAGE LOANS AND THE POOL 1 CERTIFICATES
 
     Interest and principal will be distributable on the Pool 1 Certificates
solely out of the Pool 1 Available Funds received in respect of the Pool 1
Mortgage Loans. This Pool 1 Annex sets forth certain data with respect to the
Pool 1 Mortgage Loans, describes the manner in which interest and principal will
be distributable on the Pool 1 Certificates and discusses certain yield and
weighted average life considerations relevant to an investment in the Pool 1
Certificates.
 
THE POOL 1 MORTGAGE LOANS
 
     The Pool 1 Mortgage Loans will have an aggregate Scheduled Principal
Balance as of the Cut-off Date, after deducting payments of principal due on or
before such date, of approximately $400,661,896. This amount is subject to a
permitted variance such that the aggregate Scheduled Principal Balance thereof
will not be less than $380,000,000 or greater than $420,000,000.
 
     It is expected that at least 91% (by Scheduled Principal Balance as of the
Cut-off Date) of the Pool 1 Mortgage Loans (and substantially all of the Pool 1
Mortgage Loans with loan-to-value ratios in excess of 80%) will have been
originated under the Company's full or alternative documentation program or
other full or alternative documentation programs acceptable to the Company, that
no more than 4.50% (by Scheduled Principal Balance as of the Cut-off Date) of
the Pool 1 Mortgage Loans will have been originated under the Company's 'No
Income Verification Program' or other no income verification programs acceptable
to the Company, that no more than 0.50% of the Pool 1 Mortgage Loans will have
been originated under the Company's 'Enhanced Streamlined Refinance Program' or
other streamlined refinance programs acceptable to the Company, that 0.50% of
the Pool 1 Mortgage Loans will have been originated under the Company's 'No
Ratio Program' or other no ratio programs acceptable to the Company, and that
3.50% of the Pool 1 Mortgage Loans will have been originated under the Company's
'No Income No Asset Verification Program' or other no income, no asset
verification programs acceptable to the Company. It is expected that no more
than 9.75% (by Scheduled Principal Balance as of the Cut-off Date) of the Pool 1
Mortgage Loans will have been acquired under the Company's 'Relocation Loan'
program or other relocation programs acceptable to the Company.  See 'The Trust
Fund--The Mortgage Loans--Loan Underwriting Policies' in the Prospectus.
 
     The Mortgage Rates borne by the Pool 1 Mortgage Loans are expected to range
from 6.500% to 8.875% per annum, and the weighted average Mortgage Rate as of
the Cut-off Date of such Mortgage Loans is expected to be between 7.37% and
7.40% per annum. The original principal balances of the Pool 1 Mortgage Loans
are expected to range from $20,000 to $1,400,000 and, as of the Cut-off Date,
the average Scheduled Principal Balance of such Mortgage Loans is not expected
to exceed $318,000 after application of payments due on or before the Cut-off
Date. It is expected that the month and year of the earliest origination date of
any Pool 1 Mortgage Loan will be September 1995 and the month and year of the
latest scheduled maturity date of any such Mortgage Loan will be July 2028. All
of the Pool 1 Mortgage Loans will have original terms to maturity of 20 to 30
years, and it is expected that the weighted average scheduled remaining term to
maturity of such Mortgage Loans will be between 356 and 358 months as of the
Cut-off Date.
 
     The Pool 1 Mortgage Loans are expected to have the following additional
characteristics (by Scheduled Principal Balance of all the Pool 1 Mortgage
Loans) as of the Cut-off Date:
 
          It is expected that no more than 50% of the Mortgaged Properties
     relating to the Pool 1 Mortgage Loans will be located in California. The
     majority of the Pool 1 Mortgage Loans will be secured by Mortgaged
     Properties located in California, Massachusetts and New Jersey. No more
     than 6% of such Mortgage Loans will be secured by Mortgaged Properties
     located in any one state except the states specified in the preceding
     sentence.
 
          No more than 9% of the Pool 1 Mortgage Loans will have a Scheduled
     Principal Balance of more than $500,000 and up to and including $750,000.
     No more than 2% of the Pool 1 Mortgage Loans will have a Scheduled
     Principal Balance of more than $750,000 and up to and including $1,000,000.
     No more than 1% of the Pool 1 Mortgage Loans will have a Scheduled
     Principal Balance of more than $1,000,000.
 
          No more than 17% of such Mortgage Loans will have a loan-to-value
     ratio at origination in excess of 80%, no more than 5% of such Mortgage
     Loans will have a loan-to-value ratio at origination in excess of
 
                                      A1-1
<PAGE>

     90%, and approximately 0.04% of such Mortgage Loans will have a
     loan-to-value ratio at origination in excess of 95%. As of the Cut-off
     Date, the weighted average loan-to-value ratio at origination of such
     Mortgage Loans is expected to be between 75% and 77%.
 
          No more than 0.5% of such Mortgage Loans will have a loan-to-value
     ratio at origination calculated based on an appraisal conducted more than
     one year before the origination date thereof.
 
          The proceeds of at least 52% of such Mortgage Loans will have been
     used to acquire the related Mortgaged Property. The proceeds of the
     remainder of such Mortgage Loans will have been used to refinance an
     existing loan. No more than 14% of such Mortgage Loans will have been the
     subject of 'cash-out' refinancings.
 
          No more than 1% of such Mortgage Loans will be temporary buy-down
     Mortgage Loans.
 
          No more than 2% of such Mortgage Loans will be secured by Mortgaged
     Properties located in any one postal zip code area.
 
          At least 96% of such Mortgage Loans will be secured by Mortgaged
     Properties determined by the Company to be the primary residence of the
     Mortgagor. The basis for such determination will be the making of a
     representation by the Mortgagor at origination that the underlying property
     will be used as the Mortgagor's primary residence.
 
          At least 89% of such Mortgage Loans will be secured by single-family,
     detached residences. No more than 7% of such Mortgage Loans will be secured
     by condominiums.
 
          No more than 1% of such Mortgage Loans are Cooperative Loans (see 'The
     Trust Fund--The Mortgage Loans' in the Prospectus) secured by shares of
     stock in cooperative housing corporations and assignments of the
     proprietary leases to cooperative apartment units therein.
 
          Federal emergency aid has been made available to property owners in
     several areas of California and several other states as a result of recent
     flooding, ice storms and in California, landslides. Approximately 60% (by
     Scheduled Principal Balance as of the Cut-off Date) of the Pool 1 Mortgage
     Loans (80% of which are located in California) are secured by related
     Mortgaged Properties located in the 71 counties (27 of which are in
     California) known to be affected by such conditions, and it is unknown
     whether additional areas may be affected by such conditions. In addition,
     due to recent wildfires occurring in widespread areas of Florida, federal
     emergency aid will be available to homeowners throughout Florida affected
     by such fires. Approximately 2.1% (by Scheduled Principal Balance as of the
     Cut-off Date) of the Pool 1 Mortgage Loans are secured by Mortgaged
     Properties located in Florida. The Company has not undertaken the physical
     inspection of any such Mortgaged Properties and, as a result, there can be
     no assurance that material damage to any Mortgaged Property in such
     affected areas has not occurred.
 
          Under the Agreement, the Company will represent and warrant that each
     Pool 1 Mortgaged Property is free of material damage and in good repair as
     of the date of issuance of the Certificates. In the event of an uncured
     breach of such representation and warranty that materially and adversely
     affects the interests of Certificateholders, the Company will be required
     to repurchase the affected Pool 1 Mortgage Loan or substitute another
     mortgage loan therefor. If any damage caused by the flooding, ice storms or
     landslides occurs after the Closing Date, the Company will have no such
     obligation. In addition, the standard hazard policies covering the
     Mortgaged Properties generally do not cover damage caused by flooding and
     landslides, and flood or landslide insurance may not have been obtained
     with respect to such Mortgaged Properties. To the extent that any insurance
     proceeds received with respect to any damaged Pool 1 Mortgaged Properties
     are not applied to the restoration thereof, such proceeds will be used to
     prepay the related Pool 1 Mortgage Loans in whole or in part. Any
     repurchases or prepayments of the Pool 1 Mortgage Loans may reduce the
     weighted average lives of the Certificates offered hereby and will reduce
     the yields on any Classes of Pool 1 Certificates purchased at a premium.
 
DISTRIBUTIONS ON THE POOL 1 CERTIFICATES
 
     Allocation of Pool 1 Available Funds.  Interest and principal on the Pool 1
Certificates will be distributed monthly on each Distribution Date commencing in
August 1998 in an aggregate amount equal to the Pool 1 Available Funds for such
Distribution Date.
 
                                      A1-2
<PAGE>
     On each Distribution Date, the Pool 1 Available Funds will be distributed
in the following order of priority among the Certificates:
 
          first, to the Classes of Pool 1 Senior Certificates (other than the
     Class 1-PO Certificates), the Accrued Certificate Interest on each such
     Class for such Distribution Date, any shortfall in available amounts being
     allocated among such Classes in proportion to the amount of Accrued
     Certificate Interest otherwise distributable thereon; provided that on each
     Distribution Date through the related Accretion Termination Dates (as
     defined herein) for the Class 1-A10 and Class 1-A14 Certificates, such
     amounts with respect to such Certificates will not be distributed on such
     Certificates under this priority first but will instead be added to the
     respective Class Certificate Principal Balance thereof and distributed in
     accordance with the first two paragraphs following priority eighth below;
 
          second, to the Classes of Pool 1 Senior Certificates (other than the
     Class 1-PO Certificates), any Accrued Certificate Interest thereon
     remaining undistributed from previous Distribution Dates, to the extent of
     remaining Pool 1 Available Funds, any shortfall in available amounts being
     allocated among such Classes in proportion to the amount of such Accrued
     Certificate Interest remaining undistributed (or not added to the Class
     Certificate Principal Balances of the Class 1-A10 and Class 1-A14
     Certificates) for each such Class for such Distribution Date; provided that
     on each Distribution Date through the related Accretion Termination Dates
     for the Class 1-A10 and Class 1-A14 Certificates, such amounts with respect
     to such Certificates will not be distributed on such Certificates under
     this priority second but will instead be added to the respective Class
     Certificate Principal Balance thereof and distributed in accordance with
     the first two paragraphs following priority eighth below;
 
          third, to the Pool 1 Senior Certificates (other than the Class 1-A6
     Certificates), in reduction of the Class Certificate Principal Balances
     thereof, concurrently, to the extent of remaining Pool 1 Available Funds,
     as follows:
 
             (a) to the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4, Class
        1-A5, Class 1-A7, Class 1-A8, Class 1-A9, Class 1-A10, Class 1-A11,
        Class 1-A12, Class 1-A13, Class 1-A14, Class 1-R and Class 1-RL
        Certificates, the Pool 1 Senior Optimal Principal Amount for such
        Distribution Date, concurrently, as follows:
 
                (i) pro rata, to the Class 1-R and Class 1-RL Certificates,
           until the Class Certificate Principal Balance of each such Class has
           been reduced to zero;
 
                (ii) to the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4 and
           Class 1-A5 Certificates (together, the 'Pool 1 PAC Certificates'), as
           a group, up to the amount necessary to reduce the aggregate Class
           Certificate Principal Balance of the Pool 1 PAC Certificates to the
           Aggregate Pool 1 PAC Balance (as set forth in the Pool 1 Scheduled
           Balances Table attached to this Pool 1 Annex) for such Distribution
           Date, in the following order of priority:
 
                    (A) to the Class 1-A1 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
 
                    (B) to the Class 1-A2 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
 
                    (C) to the Class 1-A3 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
 
                    (D) to the Class 1-A4 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
               and
 
                    (E) to the Class 1-A5 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
 
                (iii) concurrently, in proportion to their aggregate Class
           Certificate Principal Balances, (x) to the Class 1-A8, Class 1-A9 and
           Class 1-A10 Certificates, as a group and (y) to the Class 1-A7, Class
           1-A11, Class 1-A12, Class 1-A13 and Class 1-A14 Certificates, as a
           group, as follows:
 
                                      A1-3
<PAGE>
                    (A) to the Class 1-A8, Class 1-A9 and Class 1-A10
               Certificates, in the following order of priority:
 
                        (I) pro rata, to the Class 1-A8 and Class 1-A9
                   Certificates, up to the amount necessary to reduce the
                   aggregate Class Certificate Principal Balance of the Class
                   1-A8 and Class 1-A9 Certificates to the Aggregate Pool 1 TAC
                   Balance (as set forth in the Pool 1 TAC Balances Table
                   attached to this Pool 1 Annex) for such Distribution Date;
 
                        (II) to the Class 1-A10 Certificates, until the Class
                   Certificate Principal Balance thereof has been reduced to
                   zero; and
 
                        (III) pro rata, to the Class 1-A8 and Class 1-A9
                   Certificates, without regard to the Aggregate Pool 1 TAC
                   Balances for such Distribution Date, until the Class
                   Certificate Principal Balance of each such Class has been
                   reduced to zero; and
 
                    (B) to the Class 1-A7, Class 1-A11, Class 1-A12, Class 1-A13
               and Class 1-A14 Certificates, in the following order:
 
                        (I) to the Class 1-A7, Class 1-A13 and Class 1-A14
                   Certificates, up to the amount necessary to reduce the
                   aggregate Class Certificate Principal Balance of such Classes
                   to the Aggregate Pool 1 Scheduled Balance (as set forth in
                   the Pool 1 Scheduled Balances Table attached to this Pool 1
                   Annex) for such Distribution Date, as follows:
 
                            (1) concurrently, in proportion to their aggregate
                       Class Certificate Principal Balances, (x) to the Class
                       1-A7 Certificates, until the Class Certificate Principal
                       Balance thereof has been reduced to zero; and (y) to the
                       Class 1-A13 and Class 1-A14 Certificates, as a group, in
                       the following order:
 
                                (a) to the Class 1-A13 Certificates, up to an
                           amount necessary to reduce the Class Certificate
                           Principal Balance thereof to the Class 1-A13
                           Scheduled Balance (as set forth in the Pool 1
                           Scheduled Balances Table attached to this Pool 1
                           Annex) for such Distribution Date;
 
                                (b) to the Class 1-A14 Certificates, until the
                           Class Certificate Principal Balance thereof has been
                           reduced to zero; and
 
                                (c) to the Class 1-A13 Certificates, without
                           regard to its Class 1-A13 Scheduled Balance for such
                           Distribution Date, until the Class Certificate
                           Principal Balance thereof has been reduced to zero;
                           and
 
                        (II) pro rata, to the Class 1-A11 and Class 1-A12
                   Certificates, until the Class Certificate Balances of each
                   such Class has been reduced to zero; and
 
                        (III) to the Class 1-A7, Class 1-A13 and Class 1-A14
                   Certificates, without regard to the Aggregate Pool 1
                   Scheduled Balance for such Distribution Date, as follows:
 
                            (1) concurrently, in proportion to their aggregate
                       Class Certificate Principal Balances, (x) to the Class
                       1-A7 Certificates, until the Class Certificate Principal
                       Balance thereof has been reduced to zero; and (y) to the
                       Class 1-A13 and Class 1-A14 Certificates, as a group, in
                       the following order:
 
                                (a) to the Class 1-A13 Certificates, up to an
                           amount necessary to reduce the Class Certificate
                           Principal Balance thereof to the Class 1-A13
                           Scheduled Balance (as set forth in the Pool 1
                           Scheduled Balances Table attached to this Pool 1
                           Annex) for such Distribution Date;
 
                                (b) to the Class 1-A14 Certificates, until the
                           Class Certificate Principal Balance thereof has been
                           reduced to zero; and
 
                                (c) to the Class 1-A13 Certificates, without
                           regard to its Class 1-A13 Scheduled Balance for such
                           Distribution Date, until the Class Certificate
                           Principal Balance thereof has been reduced to zero;
                           and
 
                                      A1-4
<PAGE>
                (iv) to the Class 1-A1, Class 1-A2, Class 1-A3, Class 1-A4 and
           Class 1-A5 Certificates, without regard to the Aggregate Pool 1 PAC
           Balance for such Distribution Date, in the following order of
           priority:
 
                    (A) to the Class 1-A1 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
 
                    (B) to the Class 1-A2 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
 
                    (C) to the Class 1-A3 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
 
                    (D) to the Class 1-A4 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
               and
 
                    (E) to the Class 1-A5 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
               and
 
             (b) to the Class 1-PO Certificates, the Class 1-PO Principal
        Distribution Amount for such Distribution Date, until the Class
        Certificate Principal Balance thereof has been reduced to zero;
 
          fourth, to the Class 1-PO Certificates, to the extent of remaining
     Pool 1 Available Funds, the Class 1-PO Deferred Amount for such
     Distribution Date, until the Class Certificate Principal Balance thereof
     has been reduced to zero; provided that, (i) on any Distribution Date,
     distributions pursuant to this priority fourth shall not exceed the Pool 1
     Junior Optimal Principal Amount for such Distribution Date, (ii) such
     distributions shall not reduce the Class Certificate Principal Balance of
     the Class 1-PO Certificates and (iii) no distribution will be made in
     respect of the Class 1-PO Deferred Amount after the Distribution Date on
     which the respective Class Certificate Principal Balances of the Pool 1
     Junior Certificates have been reduced to zero (the 'Pool 1 Cross-Over
     Date');
 
          fifth, to the Class 1-M Certificates, to the extent of remaining Pool
     1 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date;
 
          sixth, to the Class 1-B1 Certificates, to the extent of remaining Pool
     1 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date;
 
          seventh, to the Class 1-B2 Certificates, to the extent of remaining
     Pool 1 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date; and
 
          eighth, to the Class 1-B3, Class 1-B4 and Class 1-B5 Certificates, to
     the extent of remaining Pool 1 Available Funds: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Classes' Allocable Shares for such Distribution Date.
 
     On each Distribution Date through the earlier of (i) the Distribution Date
on which the Class Certificate Principal Balances of both the Class 1-A8 and
Class 1-A9 Certificates has been reduced to zero and (ii) the Pool 1 Cross-Over
Date (the 'Class 1-A10 Accretion Termination Date'), before distributions have
been made pursuant to priority third above, an amount equal to the Class 1-A10
Accrual Amount (as defined herein) for such Distribution Date will be
distributed in the following order of priority: first, pro rata, to the Class
1-A8 and Class 1-A9 Certificates, up to the amount necessary to reduce the
aggregate Class Certificate Principal Balance of such Classes to the Aggregate
Pool 1 TAC Balance (as set forth in the Pool 1 TAC Balances Table attached to
this Pool 1 Annex) for such Distribution Date and second, to the Class 1-A10
Certificates in reduction of the Class Certificate Principal Balance thereof.
Any Class 1-A10 Accrual Amount so distributed to the Class 1-A8 and Class 1-A9
Certificates will be added to the Class Certificate Principal Balance of the
Class 1-A10 Certificates.
 
                                      A1-5
<PAGE>
     On each Distribution Date through the earlier of (i) the Distribution Date
on which the Class Certificate Principal Balance of the Class 1-A13 Certificates
has been reduced to zero and (ii) the Pool 1 Cross-Over Date (the 'Class 1-A14
Accretion Termination Date'), before distributions have been made pursuant to
priority third above, an amount equal to the Class 1-A14 Accrual Amount (as
defined herein) for such Distribution Date will be distributed in the following
order of priority: first, to Class 1-A13 Certificates, up to the amount
necessary to reduce the Class Certificate Principal Balance thereof to the Class
1-A13 Scheduled Balance (as set forth in the Scheduled Balances Table attached
to this Pool 1 Annex) for such Distribution Date and second, to the Class 1-A14
Certificates in reduction of the Class Certificate Principal Balance thereof.
Any Class 1-A14 Accrual Amount so distributed to the Class 1-A13 Certificates
will be added to the Class Certificate Principal Balance of the Class 1-A14
Certificates.
 
     Any Accrual Amount for the Class 1-A10 and Class 1-A14 Certificates
distributed as described above on a Distribution Date will be added to the Class
Certificate Principal Balance of the related Accrual Certificates on such
Distribution Date. The 'Accrual Amount' for each of the Class 1-A10 and Class
1-A14 Certificates (together, the 'Pool 1 Accrual Amounts') with respect to each
Distribution Date through the related Accretion Termination Date (as defined
below) will be an amount equal to the sum of (a) the Accrued Certificate
Interest on the related Certificates in accordance with priority first under
'--Allocation of Pool 1 Available Funds' above and (b) any available amount
allocable to such Classes in accordance with priority second under '--Allocation
of Pool 1 Available Funds' above.
 
     'Pro rata' distributions among Classes of Certificates will be made in
proportion to the then-current Class Certificate Principal Balances of such
Classes.
 
     On each Distribution Date after the Pool 1 Cross-Over Date, distributions
of principal on the outstanding Pool 1 Senior Certificates will be made pro rata
among all such Certificates, regardless of the allocation, or sequential nature,
of the principal payments described in priority third above.
 
     If, after distributions have been made pursuant to priorities first and
second and the first two paragraphs following priority eighth above on any
Distribution Date, the remaining Pool 1 Available Funds are less than the sum of
the amounts required to be distributed in accordance with priority third above,
the Pool 1 Senior Optimal Principal Amount and the Class 1-PO Principal
Distribution Amount for such Distribution Date shall be proportionately reduced,
and such remaining Pool 1 Available Funds will be distributed on the Pool 1
Senior Certificates (other than the Class 1-A6 Certificates) in accordance with
the applicable clauses of priority third above on the basis of such reduced
amounts. Notwithstanding such allocation, Realized Losses in respect of Pool 1
will be allocated to the Pool 1 Certificates as described under '--Allocation of
Realized Losses on the Pool 1 Certificates' herein.
 
     Interest.  Interest will accrue on the Pool 1 Certificates offered hereby
(other than the Class 1-A8, Class 1-A9, Class 1-A11 and Class 1-A12
Certificates) at the respective fixed Certificate Interest Rates set forth on
the cover hereof during each Interest Accrual Period. The 'Interest Accrual
Period' for each Class of Certificates entitled to distributions of interest
other than the Class 1-A8 and Class 1-A9 Certificates will be the one-month
period ending on the last day of the month preceding the month in which a
Distribution Date occurs. The 'Interest Accrual Period' for the Class 1-A8 and
Class 1-A9 Certificates will be the one-month period commencing on the 25th day
of the month preceding the month in which a Distribution Date occurs and ending
on the 24th day of the month of such Distribution Date. Interest will be
calculated on the basis of a 360-day year consisting of twelve 30-day months.
 
     Interest will accrue on the Class 1-B3, Class 1-B4 and Class 1-B5
Certificates at the Certificate Interest Rate of 6.75% per annum during each
Interest Accrual Period.
 
     Interest will accrue on the Class 1-A8 Certificates at the per annum rate
of 6.156% for the first Interest Accrual Period, and thereafter, with respect to
each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
0.50% plus LIBOR and (ii) 8.50%, subject to a minimum rate of 0.50%.
 
     Interest will accrue on the Class 1-A9 Certificates at the per annum rate
of 9.041143% for the first Interest Accrual Period, and thereafter, with respect
to each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
30.857143% minus the product of 3.857143 and LIBOR and (ii) 30.857143%, subject
to a minimum rate of 0.00%.
 
                                      A1-6
<PAGE>
     Interest will accrue on the Class 1-A11 Certificates at the per annum rate
of 6.356% for the first Interest Accrual Period, and thereafter, with respect to
each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
0.70% plus LIBOR and (ii) 9.00%, subject to a minimum rate of 0.70%.
 
     Interest will accrue on the Class 1-A12 Certificates at the per annum rate
of 7.932% for the first Interest Accrual Period, and thereafter, with respect to
each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
24.90% minus the product of 3.00 and LIBOR and (ii) 24.90%, subject to a minimum
rate of 0.00%.
 
     The Trustee shall determine LIBOR in accordance with the methods set forth
under '--Determination of LIBOR' below.
 
     The Class 1-PO Certificates are principal-only Certificates and will not
accrue interest.
 
     On each Distribution Date through the Class 1-A10 Accretion Termination
Date, the Accrued Certificate Interest on the Class 1-A10 Certificates on such
Distribution Date will not be distributed on such Certificate but will instead
be added to the Class Certificate Principal Balance thereof. On each
Distribution Date after the Class 1-A10 Accretion Termination Date, interest
will be distributable on the Class 1-A10 Certificates and will not be added to
the Class Certificate Principal Balances thereof. Notwithstanding the foregoing,
if the Class 1-A10 Accrual Amount (as defined herein) exceeds the aggregate
Class Certificate Principal Balance of the Class 1-A8 and Class 1-A9
Certificates, on the Distribution Date on which the aggregate Certificate
Principal Balance of the Class 1-A8 and Class 1-A9 Certificates is reduced to
zero, the excess will be distributed as current interest on the Class 1-A10
Certificates and will not be added to the Class Certificate Principal Balance
thereof.
 
     On each Distribution Date through Class 1-A14 Accretion Termination Date,
the Accrued Certificate Interest on the Class 1-A14 Certificates on such
Distribution Date will not be distributed on such Certificate but will instead
be added to the Class Certificate Principal Balance thereof. On each
Distribution Date after the Class 1-A14 Accretion Termination Date, interest
will be distributable on the Class 1-A14 Certificates and will not be added to
the Class Certificate Principal Balances thereof. Notwithstanding the foregoing,
if the Class 1-A14 Accrual Amount (as defined herein) exceeds the Class
Certificate Principal Balance of the Class 1-A13 Certificates, on the
Distribution Date on which the Certificate Principal Balance of the Class 1-A13
Certificates is reduced to zero, the excess will be distributed as current
interest on the Class 1-A14 Certificates and will not be added to the Class
Certificate Principal Balance thereof.
 
     The 'Class 1-A10 Accrual Amount' with respect to each Distribution Date
through the Class 1-A10 Accretion Termination Date will be an amount equal to
the sum of (a) the Accrued Certificate Interest in respect of the Class 1-A10
Certificates in accordance with priority first under '--Allocation of Pool 1
Available Funds' above and (b) any available amounts allocable to such Class in
accordance with priority second under '--Allocation of Pool 1 Available Funds'
above.
 
     The 'Class 1-A14 Accrual Amount' with respect to each Distribution Date
through the Class 1-A14 Accretion Termination Date will be an amount equal to
the sum of (a) the Accrued Certificate Interest in respect of the Class 1-A14
Certificates in accordance with priority first under '--Allocation of Pool 1
Available Funds' above and (b) any available amounts allocable to such Class in
accordance with priority second under '--Allocation of Pool 1 Available Funds'
above.
 
     The 'Accrued Certificate Interest' for any Pool 1 Certificate (other than a
Class 1-PO Certificate) for any Distribution Date will equal the interest
accrued during the related Interest Accrual Period at the applicable Certificate
Interest Rate on the Certificate Principal Balance (or Notional Principal
Balance in the case of a Class 1-A6 Certificate) of such Certificate immediately
prior to such Distribution Date, less such Certificate's share of any allocable
Net Interest Shortfall (as defined below), the interest portion of any Excess
Losses (as defined herein) allocable to Certificateholders through the Pool 1
Cross-Over Date and, after the Pool 1 Cross-Over Date, the interest portion of
Realized Losses allocable to Certificateholders including Excess Losses, in each
case in respect of the Pool 1 Mortgage Loans.
 
     The 'Certificate Principal Balance' of any Pool 1 Certificate (other than a
Class 1-A6 Certificate) as of any Distribution Date will equal such
Certificate's Certificate Principal Balance on the Closing Date as reduced by
(i) all amounts distributed on previous Distribution Dates on such Certificate
on account of principal, (ii) the principal portion of all Realized Losses
previously allocated to such Certificate and (iii) in the case of a Pool 1
Junior Certificate, such Certificate's pro rata share, if any, of the Pool 1
Junior Certificate Writedown Amount (as defined below) and the Class 1-PO
Deferred Payment Writedown Amount (as defined below) for previous
 
                                      A1-7
<PAGE>
Distribution Dates. As of any Distribution Date, the 'Pool 1 Junior Certificate
Writedown Amount' will equal the amount by which (a) the sum of the Class
Certificate Principal Balances of all of the Pool 1 Certificates (after giving
effect to the distribution of principal and the application of Realized Losses
in respect of the Pool 1 Mortgage Loans in reduction of the Certificate
Principal Balances of such Certificates on such Distribution Date) exceeds (b)
the aggregate Scheduled Principal Balance of the Pool 1 Mortgage Loans on the
first day of the month of such Distribution Date less any applicable Deficient
Valuations occurring on or prior to the Bankruptcy Coverage Termination Date in
respect of Pool 1. For any Distribution Date, the 'Class 1-PO Deferred Payment
Writedown Amount' will equal the amount, if any, distributed on such date in
respect of the Class 1-PO Deferred Amount pursuant to priority fourth under
'--Allocation of Pool 1 Available Funds' above. The Pool 1 Junior Certificate
Writedown Amount and the Class 1-PO Deferred Payment Writedown Amount will each
be allocated to the Classes of Pool 1 Junior Certificates in inverse order of
priority, until the Class Certificate Principal Balance of each such Class has
been reduced to zero.
 
     The aggregate 'Notional Principal Balance' of the Class 1-A6 Certificates
as of any Distribution Date will equal the sum of (a) approximately 3.703703704%
of the Class Certificate Principal Balance of the Class 1-A1 Certificates on
such Distribution Date, (b) approximately 2.222222222% of the Class Certificate
Principal Balance of the Class 1-A2 Certificates on such Distribution Date and
(c) approximately 0.740740741% of the Class Certificate Principal Balance of the
Class 1-A3 Certificates on such Distribution Date. The initial Notional
Principal Balance of the Class 1-A6 Certificates is approximately $3,177,829,
subject to the variance described herein.
 
     With respect to any Distribution Date, the 'Net Interest Shortfall'
allocable to Certificateholders in respect of a Mortgage Pool will equal the
excess of the aggregate Interest Shortfalls allocable to Certificateholders in
respect of the related Mortgage Loans with respect to such Distribution Date
over the applicable Compensating Interest Payment (as defined under 'The Pooling
and Servicing Agreement--Servicing Compensation, Compensating Interest and
Payment of Expenses' herein), if any, for such Distribution Date. For purposes
of making the foregoing determinations, any Interest Shortfalls in respect of
the Mortgage Loans in a Mortgage Pool will be allocated on each Distribution
Date between the outstanding related Certificates (other than the related Class
PO Certificates) and the Company in respect of its Supplemental Servicing Fees
(as defined herein) in proportion to the aggregate amount of Accrued Certificate
Interest and Supplemental Servicing Fees, respectively, that would have been
allocated thereto in the absence of such Interest Shortfalls.
 
     With respect to any Distribution Date, an 'Interest Shortfall' in respect
of a Mortgage Loan will result from (i) any voluntary prepayment of principal in
full on such Mortgage Loan received from the sixteenth day (or, in the case of
the first Distribution Date, from the Cut-off Date) through the last day of the
month preceding such Distribution Date; (ii) any partial prepayment of principal
on such Mortgage Loan by the Mortgagor during the month preceding such
Distribution Date; or (iii) a reduction in the interest rate on such Mortgage
Loan due to the application of the Soldiers' and Sailors' Civil Relief Act of
1940 whereby, in general, members of the Armed Forces who entered into mortgages
prior to the commencement of military service may have the interest rates on
those mortgage loans reduced for the duration of their active military service.
See 'Certain Legal Aspects of the Mortgage Loans and Contracts--The Mortgage
Loans--Soldiers' and Sailors' Civil Relief Act' in the Prospectus. As to any
Distribution Date and any Mortgage Loan with respect to which a prepayment in
full has occurred as described above, the resulting 'Interest Shortfall'
generally will equal the difference between (a) one month's interest at the
Mortgage Rate net of the applicable Base Servicing Fee (as defined herein) (the
'Net Mortgage Rate') on the Scheduled Principal Balance of such Mortgage Loan,
and (b) the amount of interest at the Net Mortgage Rate actually received with
respect to such Mortgage Loan. In the case of a partial prepayment, the
resulting 'Interest Shortfall' will equal one month's interest at the applicable
Net Mortgage Rate on the amount of such prepayment.
 
     Any Net Interest Shortfall, the interest portion of any Excess Losses
allocable to Pool 1 Certificateholders through the Pool 1 Cross-Over Date and,
after the Pool 1 Cross-Over Date, the interest portion of any Realized Losses
allocable to Certificateholders (see '--Allocation of Realized Losses on the
Pool 1 Certificates' herein), in each case in respect of the Pool 1 Mortgage
Loans, will, on each Distribution Date, be allocated among all the outstanding
Pool 1 Certificates (other than the Class 1-PO Certificates), in proportion to
the amount of Accrued Certificate Interest that would have been allocated
thereto in the absence of such shortfall and losses. See 'The
 
                                      A1-8
<PAGE>

Pooling and Servicing Agreement--Servicing Compensation, Compensating Interest
and Payment of Expenses' herein.
 
     The interest portion of any Realized Losses (other than Excess Losses) in
respect of the Pool 1 Mortgage Loans occurring prior to the Pool 1 Cross-Over
Date will not be allocated among any Pool 1 Certificates, but will reduce the
amount of Pool 1 Available Funds on the related Distribution Date. As a result
of the subordination of the Pool 1 Junior Certificates in right of distribution
relative to the Pool 1 Senior Certificates, such losses will be borne first by
the Pool 1 Junior Certificates (to the extent then outstanding) in inverse order
of priority.
 
     If the Pool 1 Available Funds are insufficient on any Distribution Date to
distribute the aggregate Accrued Certificate Interest on the Pool 1 Senior
Certificates (other than the Class 1-PO Certificates) to their
Certificateholders, any shortfall in available amounts will be allocated among
such Classes of Pool 1 Senior Certificates in proportion to the amounts of
Accrued Certificate Interest otherwise distributable thereon or, in the case of
the Class 1-A10 and Class 1-A14 Certificates through the related Accretion
Termination Date, the amounts that would otherwise be added to principal
thereof. Such reduction with respect to the Class 1-A10 and Class 1-A14
Certificates will effect a corresponding reduction in the Accrual Amount for the
Class 1-A10 and Class 1-A14 Certificates, respectively, on such Distribution
Date. The amount of any such undistributed Accrued Certificate Interest will be
added to the amount to be distributed in respect of interest on the Pool 1
Senior Certificates (other than the Class 1-PO Certificates) (or added to the
Class Certificate Principal Balance, in the case of the Class 1-A10 and Class
1-A14 Certificates, through the related Accretion Termination Date) on
subsequent Distribution Dates in accordance with priority second under
'--Allocation of Pool 1 Available Funds' above. No interest will accrue on any
Accrued Certificate Interest remaining undistributed from previous Distribution
Dates.
 
     Determination of LIBOR.  The Trustee shall determine the Certificate
Interest Rate for the Class 1-A8, Class 1-A9, Class 1-A11 and Class 1-A12
Certificates for any Interest Accrual Period by reference to LIBOR. 'LIBOR' will
be determined on the second London banking day (as defined below) immediately
preceding the commencement of each respective Interest Accrual Period for the
Class 1-A8, Class 1-A9, Class 1-A11 and Class 1-A12 Certificates (other than the
first Interest Accrual Period) (each, a 'LIBOR Determination Date'), and will be
(1) the rate (expressed as a percentage per annum) for deposits in U.S. dollars
for a period of one month that appears on Telerate page 3750 as of 11:00 a.m.,
London time, on such LIBOR Determination Date (such rate, the 'British Bankers'
Association Interest Settlement Rate') or (2) if such rate does not appear on
Telerate Page 3750 as of 11:00 a.m., London time, on the applicable LIBOR
Determination Date, the Trustee will request the principal London office of each
of four major reference banks in the London interbank market selected by the
Trustee to provide such banks' respective offered quotations (expressed as a
percentage per annum) to prime banks in the London interbank market for deposits
in U.S. Dollars for a period of one month as of 11:00 a.m., London time, on such
LIBOR Determination Date. If at least two such offered quotations are so
provided, LIBOR will be the arithmetic mean of such quotations. If fewer than
two such quotations are so provided, the Trustee will request each of three
major banks in New York City selected by the Trustee to provide such banks'
respective rates (expressed as a percentage per annum) for loans in U.S. Dollars
to leading European banks for a period of one month as of approximately 11:00
a.m., New York City time, on the first day of the applicable Interest Accrual
Period, and LIBOR will be the arithmetic mean of the quotations so provided. If
on any LIBOR Determination Date the Trustee is required but is unable to
determine LIBOR in the manner provided in the immediately preceding sentence,
LIBOR for the related Interest Accrual Period will be LIBOR as determined on the
previous LIBOR Determination Date, or, in the case of the first LIBOR
Determination Date, 5.65600% per annum. As used herein with respect to a LIBOR
Determination Date, 'London banking day' means a day on which banks are open for
dealing in foreign currency and exchange in London.
 
     The establishment of LIBOR by the Trustee and the Trustee's subsequent
calculation of the rates of interest applicable to the Class 1-A8, Class 1-A9,
Class 1-A11 and Class 1-A12 Certificates for the relevant Interest Accrual
Period, in the absence of manifest error, will be final and binding. The
Certificate Interest Rates on the Class 1-A8, Class 1-A9, Class 1-A11 and Class
1-A12 Certificates for any Interest Accrual Period may be obtained by calling
the Trustee at (617) 664-5500.
 
     Principal.  All payments and other amounts received in respect of principal
of the Pool 1 Mortgage Loans will be allocated between (i) the Pool 1
Certificates (other than the Class 1-A6 and Class 1-PO Certificates), on
 
                                      A1-9
<PAGE>
the one hand, and (ii) the Class 1-PO Certificates, on the other, in each case
based on the applicable Non-PO Percentage and the applicable PO Percentage,
respectively, of such amounts.
 
     The 'Non-PO Percentage' with respect to any Pool 1 Mortgage Loan with a Net
Mortgage Rate ('NMR') less than 6.75% per annum (each such Mortgage Loan, a
'Pool 1 Discount Mortgage Loan') will be the fraction, expressed as a
percentage, equal to NMR divided by 6.75%. The 'Non-PO Percentage' with respect
to any Pool 1 Mortgage Loan with a Net Mortgage Rate equal to or greater than
6.75% (each such Mortgage Loan, a 'Pool 1 Non-Discount Mortgage Loan') will be
100%. The 'PO Percentage' with respect to any Pool 1 Discount Mortgage Loan will
be the fraction, expressed as a percentage, equal to (6.75% - NMR) divided by
6.75%. The 'PO Percentage' with respect to any Pool 1 Non-Discount Mortgage Loan
will be 0%.
 
     The initial Class Certificate Principal Balance of the Class 1-PO
Certificates, which are not offered hereby, will be approximately $859,425
subject to the variance described herein.
 
     Distributions in reduction of the Class Certificate Principal Balance of
each Pool 1 Senior Certificate other than the Class 1-A6 Certificates will be
made on each Distribution Date pursuant to priority third and the first two
paragraphs following priority eighth under '--Allocation of Pool 1 Available
Funds' above. In accordance with priority third, the Pool 1 Available Funds
remaining after the distribution of interest on the Pool 1 Senior Certificates
(other than the Class 1-PO Certificates) will be allocated to such Certificates
(except the Class 1-A6 Certificates) in an aggregate amount not to exceed the
sum of the Pool 1 Senior Optimal Principal Amount and the Class 1-PO Principal
Distribution Amount for such Distribution Date. Distributions in reduction of
the Class Certificate Principal Balances of the Class 1-M, Class 1-B1 and Class
1-B2 Certificates will be made pursuant to priorities fifth, sixth and seventh,
respectively, under '--Allocation of Pool 1 Available Funds' above. In
accordance with each such priority, the Pool 1 Available Funds, if any,
remaining after distributions of principal and interest on the Pool 1 Senior
Certificates and payments in respect of the Class 1-PO Deferred Amount on such
Distribution Date will be allocated to the Class 1-M, Class 1-B1 and Class 1-B2
Certificates in an amount equal to each such Class's Allocable Share for such
Distribution Date, provided that no distribution of principal will be made on
any such Class until any related Class ranking prior thereto has received
distributions of interest and principal, and such Class has received
distributions of interest, on such Distribution Date.
 
     The 'Pool 1 Senior Optimal Principal Amount' with respect to each
Distribution Date will be an amount equal to the sum of (i) the Pool 1 Senior
Percentage (as defined herein) of the applicable Non-PO Percentage of all
scheduled payments of principal due on each Pool 1 Mortgage Loan on the first
day of the month in which the Distribution Date occurs, as specified in the
amortization schedule at the time applicable thereto (after adjustment for
previous principal prepayments and the principal portion of Debt Service
Reductions in respect of Pool 1 after the Pool 1 Bankruptcy Coverage Termination
Date, but before any adjustment to such amortization schedule by reason of any
other bankruptcy or similar proceeding or any moratorium or similar waiver or
grace period), (ii) the Pool 1 Senior Prepayment Percentage (as defined herein)
of the applicable Non-PO Percentage of the Scheduled Principal Balance of each
Pool 1 Mortgage Loan which was the subject of a prepayment in full received by
the Company (or, in the case of a Pool 1 Mortgage Loan master-serviced by the
Company, of which the Company receives notice) during the applicable Prepayment
Period (as defined below), (iii) the Pool 1 Senior Prepayment Percentage of the
applicable Non-PO Percentage of all partial prepayments of principal received in
respect of Pool 1 during the applicable Prepayment Period, (iv) the lesser of
(a) the Pool 1 Senior Prepayment Percentage of the applicable Non-PO Percentage
of the sum of (w) the net liquidation proceeds allocable to principal on each
Pool 1 Mortgage Loan which became a Liquidated Mortgage Loan during the related
Prepayment Period (other than Pool 1 Mortgage Loans described in clause (x)) and
(x) the principal balance of each Pool 1 Mortgage Loan that was purchased by a
private mortgage insurer during the related Prepayment Period as an alternative
to paying a claim under the related insurance policy, and (b) the Pool 1 Senior
Percentage of the applicable Non-PO Percentage of the sum of (w) the Scheduled
Principal Balance of each Pool 1 Mortgage Loan which became a Liquidated
Mortgage Loan during the related Prepayment Period (other than Pool 1 Mortgage
Loans described in clause (x)) and (x) the Scheduled Principal Balance of each
Pool 1 Mortgage Loan that was purchased by a private mortgage insurer during the
related Prepayment Period as an alternative to paying a claim under the related
insurance policy less (y) in the case of clause (b), the Pool 1 Senior
Percentage of the applicable Non-PO Percentage of the principal portion of
Excess Losses (other than Debt Service Reductions) in respect of Pool 1 during
the related Prepayment Period, and (v) the Pool 1 Senior Prepayment Percentage
of the applicable Non-PO Percentage of the sum of (a) the Scheduled Principal
Balance of each Pool 1 Mortgage Loan which was repurchased by the Company in
connection with such Distribution Date and (b) the difference, if any,
 
                                     A1-10
<PAGE>
between the Scheduled Principal Balance of a Pool 1 Mortgage Loan that has been
replaced by the Company with a substitute Pool 1 Mortgage Loan pursuant to the
Agreement in connection with such Distribution Date and the Scheduled Principal
Balance of such substitute Pool 1 Mortgage Loan.
 
     With respect to any Pool 1 Mortgage Loan that was the subject of a
voluntary prepayment in full and any Distribution Date, the 'Prepayment Period'
is the period from the sixteenth day of the month preceding the month of such
Distribution Date (or, in the case of the first Distribution Date, from the
Cut-off Date) through the fifteenth day of the month of such Distribution Date.
With respect to any other unscheduled prepayment of principal of any Pool 1
Mortgage Loan and any Distribution Date, the Prepayment Period is the month
preceding the month of such Distribution Date.
 
     The 'Pool 1 Senior Percentage' on any Distribution Date will equal the
lesser of (i) 100% and (ii) the percentage (carried to six places rounded up)
obtained by dividing the aggregate Certificate Principal Balances of all the
Pool 1 Senior Certificates (less the Class Certificate Principal Balance of the
Class 1-PO Certificates) immediately preceding such Distribution Date by the
aggregate Certificate Principal Balances of all the Pool 1 Certificates (less
the Class Certificate Principal Balance of the Class 1-PO Certificates)
immediately preceding such Distribution Date. The initial Pool 1 Senior
Percentage is expected to be approximately 95.99%.
 
     The 'Pool 1 Senior Prepayment Percentage' on any Distribution Date
occurring during the periods set forth below will be as follows:
 
<TABLE>
<CAPTION>
            PERIOD (DATES INCLUSIVE)      POOL 1 SENIOR PREPAYMENT PERCENTAGE
            <S>                           <C>
            August 1998 - July 2003       100%                                          
            August 2003 - July 2004       Pool 1 Senior Percentage plus 70% of the Pool 1 Junior
                                          Percentage                                          
            August 2004 - July 2005       Pool 1 Senior Percentage plus 60% of the Pool 1 Junior
                                          Percentage                                          
            August 2005 - July 2006       Pool 1 Senior Percentage plus 40% of the Pool 1 Junior
                                          Percentage                                          
            August 2006 - July 2007       Pool 1 Senior Percentage plus 20% of the Pool 1 Junior
                                          Percentage
            August 2007 and thereafter    Pool 1 Senior Percentage
</TABLE>
 
     Notwithstanding the foregoing, if the Pool 1 Senior Percentage on any
Distribution Date exceeds the initial Pool 1 Senior Percentage, the Pool 1
Senior Prepayment Percentage for such Distribution Date will equal 100%.
 
     In addition, no reduction of the Pool 1 Senior Prepayment Percentage below
the level in effect for the most recent prior period specified in the table
above shall be effective on any Distribution Date (such limitation being the
'Pool 1 Senior Prepayment Percentage Stepdown Limitation') unless, as of the
last day of the month preceding such Distribution Date, either:
 
          (A)(i) the aggregate Scheduled Principal Balance of Pool 1 Mortgage
     Loans delinquent 60 days or more (including for this purpose any Pool 1
     Mortgage Loans in foreclosure and Pool 1 Mortgage Loans with respect to
     which the related Mortgaged Property has been acquired by the Trust Fund
     for Pool 1) does not exceed 50% of the aggregate Class Certificate
     Principal Balance of the Pool 1 Junior Certificates as of such date and
     (ii) cumulative Realized Losses in respect of Pool 1 do not exceed (a) 30%
     of the aggregate Class Certificate Principal Balance of the Pool 1 Junior
     Certificates as of the date of issuance of the Certificates (the 'Original
     Pool 1 Junior Principal Balance') if such Distribution Date occurs between
     and including August 2003 and July 2004, (b) 35% of the Original Pool 1
     Junior Principal Balance if such Distribution Date occurs between and
     including August 2004 and July 2005, (c) 40% of the Original Pool 1 Junior
     Principal Balance if such Distribution Date occurs between and including
     August 2005 and July 2006, (d) 45% of the Original Pool 1 Junior Principal
     Balance if such Distribution Date occurs between and including August 2006
     and July 2007, and (e) 50% of the Original Pool 1 Junior Principal Balance
     if such Distribution Date occurs during or after August 2007; or
 
          (B)(i) the aggregate Scheduled Principal Balance of Pool 1 Mortgage
     Loans delinquent 60 days or more (including for this purpose any Pool 1
     Mortgage Loans in foreclosure and Pool 1 Mortgage Loans with respect to
     which the related Mortgaged Property has been acquired by the Trust Fund
     for Pool 1), averaged over the last three months, as a percentage of the
     aggregate Scheduled Principal Balance of all Pool 1 Mortgage Loans averaged
     over the last three months, does not exceed 4%, and (ii) cumulative
     Realized Losses in respect of Pool 1 do not exceed (a) 10% of the Original
     Pool 1 Junior Principal Balance if such Distribution Date occurs between
     and including August 2003 and July 2004, (b) 15% of the Original Pool 1
     Junior Principal Balance if such Distribution Date occurs between and
     including August 2004 and July 2005, (c) 20% of the Original Pool 1 Junior
     Principal Balance if such Distribution Date occurs between and including
     August 2005 and July 2006, (d) 25% of the Original Pool 1 Junior Principal
     Balance if such
 
                                     A1-11
<PAGE>
     Distribution Date occurs between and including August 2006 and July 2007,
     and (e) 30% of the Original Pool 1 Junior Principal Balance if such
     Distribution Date occurs during or after August 2007.
 
     The 'Class 1-PO Principal Distribution Amount' with respect to each
Distribution Date will be an amount equal to the sum of (i) the applicable PO
Percentage of all scheduled payments of principal due on each Pool 1 Mortgage
Loan on the first day of the month in which the Distribution Date occurs, as
specified in the amortization schedule at the time applicable thereto (after
adjustment for previous principal prepayments and the principal portion of Debt
Service Reductions in respect of Pool 1 after the Bankruptcy Coverage
Termination Date in respect of Pool 1, but before any adjustment to such
amortization schedule by reason of any other bankruptcy or similar proceeding or
any moratorium or similar waiver or grace period), (ii) the applicable PO
Percentage of the Scheduled Principal Balance of each Pool 1 Mortgage Loan which
was the subject of a prepayment in full received by the Company (or, in the case
of a Pool 1 Mortgage Loan master-serviced by the Company, of which the Company
receives notice) during the related Prepayment Period, (iii) the applicable PO
Percentage of all partial prepayments of principal received during the related
Prepayment Period, (iv) the applicable PO Percentage of the sum of (w) the net
liquidation proceeds allocable to principal on each Pool 1 Mortgage Loan which
became a Liquidated Mortgage Loan during the related Prepayment Period (other
than Pool 1 Mortgage Loans described in clause (x)) and (x) the principal
balance of each Pool 1 Mortgage Loan that was purchased by a private mortgage
insurer during the related Prepayment Period as an alternative to paying a claim
under the related insurance policy, and (v) the applicable PO Percentage of the
sum of (a) the Scheduled Principal Balance of each Pool 1 Mortgage Loan which
was repurchased by the Company in connection with such Distribution Date and (b)
the difference, if any, between the Scheduled Principal Balance of a Pool 1
Mortgage Loan that has been replaced by the Company with a substitute Pool 1
Mortgage Loan pursuant to the Agreement in connection with such Distribution
Date and the Scheduled Principal Balance of such substitute Pool 1 Mortgage
Loan. For purposes of clauses (ii) and (v) above, the Scheduled Principal
Balance of a Pool 1 Mortgage Loan will be reduced by the amount of any Deficient
Valuation that occurred on or before the Pool 1 Bankruptcy Coverage Termination
Date.
 
     The 'Pool 1 Junior Percentage' on any Distribution Date will equal 100%
minus the Pool 1 Senior Percentage. The 'Pool 1 Junior Prepayment Percentage'
will equal 100% minus the Pool 1 Senior Prepayment Percentage, except that on
any Distribution Date after the respective Class Certificate Principal Balances
of the Pool 1 Senior Certificates (other than the Class 1-PO Certificates) have
each been reduced to zero (the 'Pool 1 Senior Final Distribution Date'), the
Pool 1 Junior Prepayment Percentage will equal 100%. The initial Pool 1 Junior
Percentage is expected to be approximately 4.01%.
 
     The 'Pool 1 Junior Optimal Principal Amount' with respect to each
Distribution Date will be an amount equal to the sum of the following (but in no
event greater than the aggregate Class Certificate Principal Balances of the
Pool 1 Junior Certificates immediately prior to such Distribution Date): (i) the
Pool 1 Junior Percentage of the applicable Non-PO Percentage of all scheduled
payments of principal due on each outstanding Pool 1 Mortgage Loan on the first
day of the month in which the Distribution Date occurs, as specified in the
amortization schedule at the time applicable thereto (after adjustment for
previous principal prepayments and the principal portion of Debt Service
Reductions in respect of Pool 1 after the Pool 1 Bankruptcy Coverage Termination
Date, but before any adjustment to such amortization schedule by reason of any
other bankruptcy or similar proceeding or any moratorium or similar waiver or
grace period), (ii) the Pool 1 Junior Prepayment Percentage of the applicable
Non-PO Percentage of the Scheduled Principal Balance of each Pool 1 Mortgage
Loan which was the subject of a prepayment in full received by the Company (or,
in the case of a Pool 1 Mortgage Loan master-serviced by the Company, of which
the Company receives notice) during the related Prepayment Period, (iii) the
Pool 1 Junior Prepayment Percentage of the applicable Non-PO Percentage of all
partial prepayments of principal received in respect of Pool 1 during the
related Prepayment Period (plus, on the Pool 1 Senior Final Distribution Date,
100% of any Pool 1 Senior Optimal Principal Amount remaining undistributed on
each date), (iv) the excess, if any, of the sum of (a) the applicable Non-PO
Percentage of the net liquidation proceeds allocable to principal received
during the related Prepayment Period in respect of each Liquidated Mortgage Loan
in Pool 1 (other than Pool 1 Mortgage Loans described in clause (b)) and (b) the
applicable Non-PO Percentage of the principal balance of each Pool 1 Mortgage
Loan that was purchased by a private mortgage insurer during the related
Prepayment Period as an alternative to paying a claim under the related
insurance policy over (c) the sum of the amounts distributable to the Pool 1
Senior Certificateholders (other than the holders of the Class 1-PO
Certificates) pursuant to clause (iv) of the definition of Pool 1 Senior
 
                                     A1-12
<PAGE>

Optimal Principal Amount on such Distribution Date, and (v) the Pool 1 Junior
Prepayment Percentage of the applicable Non-PO Percentage of the sum of (a) the
Scheduled Principal Balance of each Pool 1 Mortgage Loan which was repurchased
by the Company in connection with such Distribution Date and (b) the difference,
if any, between the Scheduled Principal Balance of a Pool 1 Mortgage Loan that
has been replaced by the Company with a substitute Pool 1 Mortgage Loan pursuant
to the Agreement in connection with such Distribution Date and the Scheduled
Principal Balance of such substitute Pool 1 Mortgage Loan.
 
     The 'Allocable Share' with respect to any Class of Pool 1 Junior
Certificates on any Distribution Date will generally equal such Class's pro rata
share (based on the Class Certificate Principal Balance of each Class entitled
thereto) of each of the components of the Pool 1 Junior Optimal Principal Amount
described above; provided, that, except as described in the second succeeding
sentence, no Class 1-B Certificate shall be entitled on any Distribution Date to
receive distributions pursuant to clauses (ii), (iii) and (v) of the definition
of Pool 1 Junior Optimal Principal Amount unless the Class Prepayment
Distribution Trigger for the related Class is satisfied for such Distribution
Date. The 'Class Prepayment Distribution Trigger' for a Class of Class 1-B
Certificates for any Distribution Date is satisfied if the fraction (expressed
as a percentage), the numerator of which is the aggregate Class Certificate
Principal Balance of such Class and each Class subordinate thereto, if any, and
the denominator of which is the aggregate Scheduled Principal Balance of the
Pool 1 Mortgage Loans with respect to such Distribution Date, equals or exceeds
such percentage calculated as of the Closing Date. If, on any Distribution Date,
the Class Certificate Principal Balance of the Class 1-M Certificates or of any
Class of Class 1-B Certificates for which the related Class Prepayment
Distribution Trigger was satisfied on such Distribution Date is reduced to zero,
any amounts distributable to such Class pursuant to clauses (ii), (iii) and (v)
of the definition of Pool 1 Junior Optimal Principal Amount, to the extent of
such Class's remaining Allocable Share, shall be distributed to the remaining
Classes of Pool 1 Junior Certificates in reduction of their respective Class
Certificate Principal Balances in order of priority. If the Class Prepayment
Distribution Trigger is not satisfied for any Class of Class 1-B Certificates on
any Distribution Date, this may have the effect of accelerating the amortization
of more senior ranking Classes of Pool 1 Junior Certificates. On any
Distribution Date, any reduction in funds available for distribution to the
Classes of Pool 1 Junior Certificates resulting from a distribution of the Class
1-PO Deferred Amount to the Class 1-PO Certificates will be allocated to the
Classes of Pool 1 Junior Certificates, in reduction of the Allocable Shares
thereof, in inverse order of priority.
 
     Example of Distributions.  For an example of hypothetical distributions on
the Certificates for a particular Distribution Date, see 'Description of the
Certificates--Example of Distributions' in the accompanying Prospectus.
 
ALLOCATION OF REALIZED LOSSES ON THE POOL 1 CERTIFICATES
 
     A 'Realized Loss' with respect to a Mortgage Loan is (i) a Bankruptcy Loss
(as defined below) or (ii) as to any Liquidated Mortgage Loan, the unpaid
principal balance thereof plus accrued and unpaid interest thereon at the Net
Mortgage Rate through the last day of the month of liquidation less the net
proceeds from the liquidation of, and any insurance proceeds from, such Mortgage
Loan and the related Mortgaged Property. A 'Liquidated Mortgage Loan' is any
defaulted Mortgage Loan as to which the Company has determined that all amounts
which it expects to recover from or on account of such Mortgage Loan have been
recovered.
 
     In the event of a personal bankruptcy of a Mortgagor, the bankruptcy court
may establish the value of the Mortgaged Property at an amount less than the
then outstanding principal balance of the Mortgage Loan secured by such
Mortgaged Property and could reduce the secured debt to such value. In such
case, the holder of such Mortgage Loan would become an unsecured creditor to the
extent of the difference between the outstanding principal balance of such
Mortgage Loan and such reduced secured debt (such difference, a 'Deficient
Valuation'). In addition, certain other modifications of the terms of a Mortgage
Loan can result from a bankruptcy proceeding, including the reduction of the
amount of the monthly payment on the related Mortgage Loan (a 'Debt Service
Reduction').
 
                                     A1-13


<PAGE>

     A 'Bankruptcy Loss' with respect to any Mortgage Loan is a Deficient
Valuation or Debt Service Reduction.
 
     A 'Fraud Loss' is any Realized Loss attributable to fraud in the
origination of the related Mortgage Loan.
 
     A 'Special Hazard Loss' is a Realized Loss attributable to damage or a
direct physical loss suffered by a Mortgaged Property (including any Realized
Loss due to the presence or suspected presence of hazardous wastes or substances
on a Mortgaged Property) other than any such damage or loss covered by a hazard
policy or a flood insurance policy required to be maintained in respect of such
Mortgaged Property under the Agreement or any loss due to normal wear and tear
or certain other causes.
 
     On each Distribution Date, the applicable PO Percentage of the principal
portion of any Realized Loss (including any Excess Loss, but not including any
Debt Service Reduction) on a Pool 1 Discount Mortgage Loan will be allocated to
the Class 1-PO Certificates until the Class Certificate Principal Balance
thereof is reduced to zero. With respect to any Distribution Date through the
Pool 1 Cross-Over Date, the aggregate of all amounts so allocable to the Class
1-PO Certificates on such date in respect of Realized Losses other than Excess
Losses in respect of the Pool 1 Discount Mortgage Loans and all amounts
previously allocated in respect of such losses to the Class 1-PO Certificates
and not distributed on prior Distribution Dates will be the 'Class 1-PO Deferred
Amount.' To the extent funds are available therefor on any Distribution Date
through the Pool 1 Cross-Over Date, distributions in respect of the Class 1-PO
Deferred Amount will be made on the Class 1-PO Certificates in accordance with
priority fourth under '--Distributions on the Pool 1 Certificates--Allocation of
Pool 1 Available Funds' above. Any distribution of Pool 1 Available Funds in
respect of the Class 1-PO Deferred Amount will not reduce the Class Certificate
Principal Balance of the Class 1-PO Certificates. No interest will accrue on the
Class 1-PO Deferred Amount. On each Distribution Date through the Pool 1
Cross-Over Date, the Class Certificate Principal Balance of the lowest ranking
Class of Pool 1 Junior Certificates then outstanding will be reduced by the
amount of any distributions in respect of the Class 1-PO Deferred Amount on such
Distribution Date, through the operation of the Class 1-PO Deferred Payment
Writedown Amount. After the Pool 1 Cross-Over Date, no distributions will be
made in respect of, and losses allocated to the Class 1-PO Certificates will not
be added to, the Class 1-PO Deferred Amount. Any distribution of Unanticipated
Recoveries (as defined in the accompanying Prospectus) in respect of Pool 1 on
the Class 1-PO Certificates will be adjusted to take into account the Class 1-PO
Deferred Amount previously paid to such Class as specified in the Agreement. See
'Servicing of the Mortgage Loans and Contracts--Unanticipated Recoveries of
Losses on the Mortgage Loans' in the accompanying Prospectus.
 
     The applicable Non-PO Percentage of the principal portion of any Realized
Loss (other than an Excess Loss or a Debt Service Reduction) on a Pool 1
Mortgage Loan for any Distribution Date will not be allocated to any Pool 1
Senior Certificates until the Pool 1 Cross-Over Date. Prior to the Pool 1
Cross-Over Date (and on such date under certain circumstances), the applicable
Non-PO Percentage of the principal portion of any such Realized Loss will be
allocated among the outstanding Classes of Pool 1 Junior Certificates, in
inverse order of priority, until the Class Certificate Principal Balance of each
such Class has been reduced to zero (i.e., such Realized Losses will be
allocated first to the Class 1-B5 Certificates while such Certificates are
outstanding, second to the Class 1-B4 Certificates, and so on). The applicable
Non-PO Percentage of the principal portion of any Excess Loss (other than a Debt
Service Reduction) on a Pool 1 Mortgage Loan for any Distribution Date will be
allocated pro rata among all outstanding Classes of Pool 1 Certificates (other
than the Class 1-A6 and Class 1-PO Certificates) based on their Class
Certificate Principal Balances. Commencing on the Pool 1 Cross-Over Date, the
applicable Non-PO Percentage of the principal portion of any Realized Loss
(other than a Debt Service Reduction) in respect of the Pool 1 Mortgage Loans
will be allocated among the outstanding Classes of Pool 1 Senior Certificates
(other than the Class 1-A6 and Class 1-PO Certificates) pro rata based upon
their Class Certificate Principal Balances.
 
     No reduction of the Class Certificate Principal Balance of any Class of
Pool 1 Certificates will be made on any Distribution Date on account of any
Realized Loss to the extent that such reduction would have the effect of
reducing the aggregate Certificate Principal Balance of all of the Pool 1
Certificates as of such Distribution Date to an amount less than the Pool
Scheduled Principal Balance of Pool 1 as of the first day of the month of such
Distribution Date, less any Deficient Valuations in respect of Pool 1 Mortgage
Loans occurring on or prior to the Pool 1 Bankruptcy Coverage Termination Date
(such limitation being the 'Pool 1 Loss Allocation Limitation').
 
     Because the aggregate Notional Principal Balance of the Class 1-A6
Certificates will be determined by reference to the Class Certificate Principal
Balance from time to time of the Class 1-A1, Class 1-A2 and
 
                                     A1-14
<PAGE>

Class 1-A3 Certificates, any Realized Losses that are applied to reduce the
Class Certificate Principal Balance of the Class 1-A1, Class 1-A2 and Class 1-A3
Certificates will also reduce the Notional Principal Balance of the Class 1-A6
Certificates. As a result, the amount of interest distributable on the Class
1-A6 Certificates would be reduced.
 
     The principal portion of Debt Service Reductions in respect of the Pool 1
Mortgage Loans will not be allocated in reduction of the Certificate Principal
Balance of any Pool 1 Certificate. However, after the Pool 1 Bankruptcy Coverage
Termination Date, the amounts distributable under clause (i) of each of the
definitions of Pool 1 Senior Optimal Principal Amount, Class 1-PO Principal
Distribution Amount and Pool 1 Junior Optimal Principal Amount will be reduced
by the amount of any Debt Service Reductions in respect of the Pool 1 Mortgage
Loans. Regardless of when they occur, such Debt Service Reductions may reduce
the amount of Pool 1 Available Funds otherwise available for distribution on a
Distribution Date. As a result of the subordination of the Pool 1 Junior
Certificates in right of distribution relative to the Pool 1 Senior
Certificates, any Debt Service Reductions in respect of the Pool 1 Mortgage
Loans prior to the Pool 1 Bankruptcy Coverage Termination Date will be borne by
the Pool 1 Junior Certificates (to the extent then outstanding) in inverse order
of priority.
 
     All allocations of Realized Losses in respect of the Pool 1 Mortgage Loans
to a Class of Pool 1 Certificates will be accomplished on a Distribution Date by
reducing the applicable Class Certificate Principal Balance by the appropriate
share of any such losses occurring during the month preceding the month of such
Distribution Date and, accordingly, will be taken into account in determining
the distributions of principal and interest on the Pool 1 Certificates
commencing on the following Distribution Date, except that the aggregate amount
of the principal portion of any Realized Losses (other than Excess Losses and
Debt Service Reductions) to be allocated to the Class 1-PO Certificates on any
Distribution Date through the Pool 1 Cross-Over Date will also be taken into
account in determining distributions in respect of the Class 1-PO Deferred
Amount for such Distribution Date. For purposes of allocating Realized Losses
(including Excess Losses), the Class Certificate Principal Balance of each of
the Class 1-A10 and Class 1-A14 Certificates will be deemed to equal the lesser
of (i) the original Class Certificate Principal Balance thereof (reduced by any
Realized Losses previously allocated to such Class) and (ii) the outstanding
Class Certificate Principal Balance thereof.
 
     The interest portion of all Realized Losses in respect of the Pool 1
Mortgage Loans will be allocated among the outstanding Classes of Pool 1
Certificates offered hereby to the extent described under '--Distributions on
the Pool 1 Certificates--Interest' above. For purposes of making certain
calculations under the Agreement, the interest portion of any Realized Loss in
respect of a Pool 1 Mortgage Loan will be allocated among the Base Servicing
Fee, the Supplemental Servicing Fee and interest at the excess of the Mortgage
Rate over the sum of the Base Servicing Fee and the Supplemental Servicing Fee
in proportion to the amount of accrued interest in respect of such Pool 1
Mortgage Loan that would have been so allocated in the absence of any such
shortfall.
 
     The applicable Non-PO Percentage of any Deficient Valuation in respect of a
Pool 1 Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 1 Junior Certificates until the Pool 1 Bankruptcy Coverage
Termination Date. The 'Pool 1 Bankruptcy Coverage Termination Date' is the
Distribution Date upon which the Pool 1 Bankruptcy Loss Amount has been reduced
to zero or a negative number (or the Pool 1 Cross-Over Date, if earlier). On
each Distribution Date, the 'Pool 1 Bankruptcy Loss Amount' will equal
approximately $147,025 (approximately 0.04% of the aggregate Scheduled Principal
Balances of the Pool 1 Mortgage Loans as of the Cut-off Date), subject to
reduction as described in the Agreement, minus the aggregate amount of previous
Bankruptcy Losses in respect of the Pool 1 Mortgage Loans. The Pool 1 Bankruptcy
Loss Amount and the manner of reduction thereof described in the Agreement may
be reduced or modified upon written confirmation from Fitch and S&P (each as
defined herein) to the effect that such reduction or modification will not
adversely affect the then current ratings of the Pool 1 Senior Certificates by
Fitch and S&P. Such reduction may adversely affect the coverage provided by
subordination with respect to Bankruptcy Losses in respect of the Pool 1
Mortgage Loans.
 
     The applicable Non-PO Percentage of any Fraud Loss in respect of a Pool 1
Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 1 Junior Certificates until the Pool 1 Fraud Coverage
Termination Date. The 'Pool 1 Fraud Coverage Termination Date' is the
Distribution Date upon which the Fraud Loss Amount has been reduced to zero or a
negative number (or the Pool 1 Cross-Over Date, if earlier). Upon the initial
issuance of the Certificates, the 'Pool 1 Fraud Loss Amount' will equal
approximately $4,006,619 (approximately 1.00% of the aggregate Scheduled
Principal Balances of the Pool 1 Mortgage Loans as of the Cut-off Date). As of
any Distribution Date prior to the first anniversary of the Cut-off Date, the
Pool 1 Fraud Loss Amount will equal approximately $4,006,619, minus the
aggregate amount of Fraud Losses that
 
                                     A1-15
<PAGE>

would have been allocated to the Pool 1 Junior Certificates in the absence of
the Pool 1 Loss Allocation Limitation since the Cut-off Date. As of any
Distribution Date from the first to the fifth anniversaries of the Cut-off Date,
the Pool 1 Fraud Loss Amount will equal (1) the lesser of (a) the Pool 1 Fraud
Loss Amount as of the most recent anniversary of the Cut-off Date and (b) 1%
(from the first to but excluding the third anniversaries of the Cut-off Date) or
0.5% (from and including the third to but excluding the fifth anniversaries of
the Cut-off Date) of the aggregate outstanding principal balance of all of the
Pool 1 Mortgage Loans as of the most recent anniversary of the Cut-off Date
minus (2) the Fraud Losses that would have been allocated to the Pool 1 Junior
Certificates in the absence of the Pool 1 Loss Allocation Limitation since the
most recent anniversary of the Cut-off Date. As of any Distribution Date on or
after the fifth anniversary of the Cut-off Date, the Pool 1 Fraud Loss Amount
shall be zero.
 
     The applicable Non-PO Percentage of any Special Hazard Loss in respect of a
Pool 1 Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 1 Junior Certificates until the Pool 1 Special Hazard
Termination Date. The 'Pool 1 Special Hazard Termination Date' is the
Distribution Date upon which the Pool 1 Special Hazard Loss Amount has been
reduced to zero or a negative number (or the Pool 1 Cross-Over Date, if
earlier). Upon the initial issuance of the Certificates, the 'Pool 1 Special
Hazard Loss Amount') will equal approximately $4,475,747 (approximately 1.12% of
the aggregate Scheduled Principal Balances of the Pool 1 Mortgage Loans as of
the Cut-off Date). As of any Distribution Date, the Pool 1 Special Hazard Loss
Amount will equal approximately $4,475,747 minus the sum of (i) the aggregate
amount of Special Hazard Losses that would have been previously allocated to the
Pool 1 Junior Certificates in the absence of the Pool 1 Loss Allocation
Limitation and (ii) the Pool 1 Adjustment Amount. For each anniversary of the
Cut-off Date, the 'Pool 1 Adjustment Amount' shall be equal to the amount, if
any, by which the Pool 1 Special Hazard Loss Amount (without giving effect to
the deduction of the Pool 1 Adjustment Amount for such anniversary) exceeds the
lesser of (A) an amount calculated by the Company and approved by each of Fitch
and S&P, which amount shall not be less than $500,000, and (B) the greater of
(x) 1% (or if greater than 1%, the highest percentage of Pool 1 Mortgage Loans
by principal balance secured by Mortgaged Properties in any California zip code)
of the outstanding principal balance of all the Pool 1 Mortgage Loans on the
Distribution Date immediately preceding such anniversary and (y) twice the
outstanding principal balance of the Pool 1 Mortgage Loan which has the largest
outstanding principal balance on the Distribution Date immediately preceding
such anniversary.
 
             POOL 1 YIELD AND WEIGHTED AVERAGE LIFE CONSIDERATIONS
 
YIELD
 
     The effective yields on the Pool 1 Certificates will depend upon, among
other things, the price at which such Certificates are purchased and the rate
and timing of payments of principal (including both scheduled and unscheduled
payments) of the Pool 1 Mortgage Loans.
 
     The yields to investors will be sensitive in varying degrees to the rate of
prepayments on the Pool 1 Mortgage Loans. The extent to which the yield to
maturity of a Certificate is sensitive to prepayments will depend upon the
degree to which it is purchased at a discount or premium. In the case of
Certificates purchased at a premium, and especially in the case of the Class
1-A6 Certificates, faster than anticipated rates of principal payments on the
Mortgage Loans in Pool 1 could result in actual yields to investors in such
Certificates that are lower than the anticipated yields. In the case of
Certificates purchased at a discount (especially the Class 1-A10 and Class 1-A14
Certificates), slower than anticipated rates of principal payments on the
Mortgage Loans in Pool 1 could result in actual yields to investors in such
Certificates that are lower than the anticipated yields.
 
     Rapid rates of prepayments on the Pool 1 Mortgage Loans are likely to
coincide with periods of low prevailing interest rates. During such periods, the
yields at which an investor in the Pool 1 Certificates may be able to reinvest
amounts received as payments on the investor's Certificates may be lower than
the yield on such Certificates. Conversely, slow rates of prepayments on the
Pool 1 Mortgage Loans are likely to coincide with periods of high prevailing
interest rates. During such periods, the amount of payments available to an
investor for reinvestment at such high rates may be relatively low.
 
     The Pool 1 Mortgage Loans will not prepay at any constant rate, nor will
all of the Pool 1 Mortgage Loans prepay at the same rate at any one time. The
timing of changes in the rate of prepayments may affect the actual yield to an
investor, even if the average rate of principal prepayments is consistent with
the investor's expectation. In general, the earlier a prepayment of principal on
a Pool 1 Mortgage Loan, the greater the effect on the yield to an investor in
the Pool 1 Certificates. As a result, the effect on the yield of principal
prepayments on the Pool 1 Mortgage Loans occurring at a rate higher (or lower)
than the rate anticipated by the investor during
 
                                     A1-16
<PAGE>

the period immediately following the issuance of the Pool 1 Certificates is not
likely to be offset by a later equivalent reduction (or increase) in the rate of
principal prepayments.
 
     The Pool 1 Mortgage Loans will bear interest at fixed Mortgage Rates,
payable in arrears. Each monthly interest payment on a Mortgage Loan is
calculated as 1/12th of the applicable Mortgage Rate multiplied by the
outstanding principal balance of such Mortgage Loan on the first day of the
month.
 
     The effective yield to holders of Pool 1 Certificates offered hereby (other
than the Class 1-A8 and Class 1-A9 Certificates) will be lower than the yield
otherwise produced by the applicable Certificate Interest Rate and the
applicable purchase prices thereof because, while interest will accrue from the
first day of each month, the distribution of such interest will not be made
until the 25th day (or if such day is not a business day, the immediately
following business day) of the month following the month of accrual. In
addition, the effective yield on the Pool 1 Certificates will be affected by any
Net Interest Shortfall and the interest portion of certain losses in respect of
Pool 1. See 'Pool 1 Annex--Distributions on the Pool 1 Certificates' and
'--Allocation of Realized Losses on the Pool 1 Certificates' herein.
 
PREPAYMENTS
 
     The rate of distribution of principal of the Pool 1 Certificates (and the
aggregate amount of interest distributable on the Class 1-A6 Certificates) will
be affected primarily by the amount and timing of principal payments received on
or in respect of the Pool 1 Mortgage Loans. Such principal payments will include
scheduled payments as well as voluntary prepayments by borrowers (such as, for
example, prepayments in full due to refinancings, including refinancings made by
the Company in the ordinary course of conducting its mortgage banking business,
some of which refinancings may be solicited by the Company, or prepayments in
connection with biweekly payment programs, participation in which may be
solicited by the Company) and prepayments resulting from foreclosure,
condemnation and other dispositions of the Pool 1 Mortgaged Properties, from
repurchase by the Company of any Mortgage Loan as to which there has been a
material breach of warranty or defect in documentation (or deposit of certain
amounts in respect of delivery of a substitute Mortgage Loan therefor), and from
an exercise by the Company of its option to repurchase a Defaulted Mortgage
Loan. See the last two paragraphs of 'The Pool 1 Mortgage Loans,' above and
'Yield Maturity and Weighted Average Life Considerations' in the Prospectus.
Mortgagors are permitted to prepay the Pool 1 Mortgage Loans, in whole or in
part, at any time without penalty. In addition, as a result of the fact that
Pool 1 Certificateholders will be entitled on any Distribution Date to receive
from the Pool 1 Available Funds distributions of amounts pursuant to clause (iv)
of each of the definitions of the Pool 1 Senior Optimal Principal Amount, Class
1-PO Principal Distribution Amount or Pool 1 Junior Optimal Principal Amount,
the occurrence of defaults on the Pool 1 Mortgage Loans may produce the same
effect on the Pool 1 Certificates receiving such distributions as an early
receipt of principal.
 
     A number of social, economic, tax, geographic, demographic, legal and other
factors may influence prepayments of the Mortgage Loans. These factors may
include the age of such Mortgage Loans, the geographic distribution of the
Mortgaged Properties, the payment terms of such Mortgage Loans, the
characteristics of the borrowers, homeowner mobility, economic conditions
generally and in the geographic area in which the Mortgaged Properties are
located, enforceability of due-on-sale clauses, prevailing interest rates in
relation to the interest rates on such Mortgage Loans, the availability of
mortgage funds, the use of second or 'home equity' mortgage loans by mortgagors,
the use of the properties as second or vacation homes, the extent of the
mortgagors' net equity in the Mortgaged Properties, tax-related considerations
and, where investment properties are securing such Mortgage Loans, the
availability of other investments. The rate of principal payment may also be
subject to seasonal variations.
 
     The rate of principal prepayments on pools of conventional mortgage loans
has fluctuated significantly in recent years. Generally, if prevailing interest
rates were to fall significantly below the interest rates on the Pool 1 Mortgage
Loans, such Mortgage Loans would be expected to prepay at higher rates than if
prevailing rates were to remain at or above the interest rates on such Mortgage
Loans. Conversely, if interest rates were to rise significantly above the
interest rates on the Pool 1 Mortgage Loans, such Mortgage Loans would be
expected to prepay at lower rates than if prevailing rates were to remain at or
below the interest rates on such Mortgage Loans.
 
     Voluntary prepayments in full of principal on the Pool 1 Mortgage Loans
received by the Company (or, in the case of Mortgage Loans master-serviced by
the Company, of which the Company receives notice) from the first day through
the fifteenth day of each month (other than the month of the Cut-off Date) are
passed through to
 
                                     A1-17
<PAGE>

the Pool 1 Certificateholders in the month of receipt or payment. Voluntary
prepayments of principal in full received from the sixteenth day (or, in the
case of the month of the Cut-off Date, from the Cut-off Date) through the last
day of each month, and all voluntary partial prepayments of principal on the
Pool 1 Mortgage Loans are passed through to the Pool 1 Certificateholders in the
month following the month of receipt or payment. Any prepayment or liquidation
of a Pool 1 Mortgage Loan (by foreclosure proceedings or by virtue of the
purchase of a Pool 1 Mortgage Loan in advance of its stated maturity as required
or permitted by the Agreement) will generally have the effect of passing through
to the Pool 1 Certificateholders principal amounts which would otherwise be
passed through in amortized increments over the remaining term of such Mortgage
Loan.
 
     The entire amount of the applicable Non-PO Percentage of any prepayment and
unscheduled recovery of principal with respect to a Pool 1 Mortgage Loan will be
allocated solely to the outstanding Pool 1 Senior Certificates (other than the
Class 1-A6 and the Class 1-PO Certificates, as described herein) during the
first five years after the Cut-off Date (with such allocation being subject to
reduction thereafter as described herein), except as otherwise described herein
on or following the Pool 1 Senior Final Distribution Date. Among such Pool 1
Senior Certificates, such amounts will be allocated in the manner described
herein. See 'Pool 1 Annex-- Distributions on the Pool 1 Certificates--Principal'
herein.
 
     When a full prepayment is made on a Mortgage Loan in a Mortgage Pool, the
Mortgagor is charged interest ('Prepayment Interest') on the days in the month
actually elapsed up to the date of such prepayment, at a daily interest rate
(determined by dividing the Mortgage Rate by 360) which is applied to the
principal amount of the loan so prepaid. When such a prepayment is made during
the period from the sixteenth day through the last day of any month (and from
the Cut-off Date through the fifteenth day of the month of the Cut-off Date),
such Prepayment Interest (net of Servicing Fees) is passed through to the Pool 1
Certificateholders in the month following its receipt and the amount of interest
thus distributed to Certificateholders, to the extent not offset by a related
Compensating Interest Payment (as defined herein), will be less than the amount
which would have been distributed in the absence of such prepayment. The payment
of a claim under certain insurance policies or the purchase of a defaulted Pool
1 Mortgage Loan by a private mortgage insurer may also cause a reduction in the
amount of interest passed through. Shortfalls in respect of Pool 1 described in
this paragraph will be borne by the Pool 1 Certificateholders to the extent
described herein. See '--Distributions on the Pool 1 Certificates-- Interest'
herein.
 
     Any partial prepayment will be applied to the balance of the related Pool 1
Mortgage Loans as of the first day of the month of receipt, will be passed
through to the Pool 1 Certificateholders in the following month and, to the
extent not offset by a related Compensating Interest Payment, will reduce the
aggregate amount of interest distributable to such Certificateholders in such
month in an amount equal to 30 days of interest at the related Net Mortgage Rate
on the amount of such prepayment.
 
     The yield on certain Classes of the Pool 1 Certificates also may be
affected by any repurchase by the Company of the Pool 1 Mortgage Loans as
described under 'The Pooling and Servicing Agreement-- Termination' herein.
 
SENSITIVITY OF THE CLASS 1-A6 CERTIFICATES
 
     The yield to investors in the Class 1-A6 Certificates will be highly
sensitive to the rate of principal prepayments of the Pool 1 Mortgage Loans.
Investors in the Class 1-A6 Certificates should consider the associated risks,
including the risk that faster than anticipated rates of principal prepayments
on Pool 1 Mortgage Loans could result in actual yields to investors that are
significantly lower than anticipated yields or the failure of such investors to
fully recover their investments. The Notional Principal Balance of the Class
1-A6 Certificates at any time will be determined by reference to the Class
Certificate Principal Balance of the Class 1-A1, Class 1-A2 and Class 1-A3
Certificates (as described herein).
 
     To illustrate the significance of prepayments on the distributions on the
Class 1-A6 Certificates, the following table indicates the pre-tax yields to
maturity (on a corporate bond equivalent basis) under the specified assumptions
at the different constant percentages of the Prepayment Assumption shown. The
yields were calculated by determining the applicable monthly discount rate
which, when applied to the related assumed stream of cash flows to be paid on
the Class 1-A6 Certificates, would cause the discounted present value of such
cash flows to equal the assumed purchase price for such Certificates stated in
such table and converting the applicable monthly discount rate to a corporate
bond equivalent rate. Implicit in the use of any discounted present value or
internal rate of return calculations such as these is the assumption that
intermediate cash flows are reinvested at the discount rate or internal rate of
return. Thus, these calculations do not take into account the
 
                                     A1-18
<PAGE>

different interest rates at which investors may be able to reinvest funds
received by them as distributions on such Certificates and, consequently, do not
reflect the return on any investment when such reinvestment rates are
considered. It is unlikely that the Pool 1 Mortgage Loans will prepay at any of
the constant levels of the Prepayment Assumption shown or any other constant
rate until maturity or that all of the Pool 1 Mortgage Loans will prepay at the
same rate. The timing of changes in the rate of prepayments may significantly
affect the total distributions received, the date of receipt of such
distributions and the actual yield to maturity to any investor, even if the
average rate of principal prepayments is consistent with an investor's
expectation. In general, the earlier the payment of principal of the Pool 1
Mortgage Loans, the greater the effect on an investor's yield to maturity. As a
result, the effect of an investor's yield of principal prepayments occurring at
a rate higher (or lower) than the rate anticipated by the investor during the
period immediately following the issuance of the Certificates will not be
equally offset by a subsequent like reduction (or increase) in the rate of
principal prepayments.
 
     The following table has been prepared based on the Pool 1 Modeling
Assumptions (as defined herein) and the additional assumptions that (i) the
assumed purchase price of the Class 1-A6 Certificates is equal to the sum of (a)
the product of (i) the Notional Principal Balance for such Class (as set forth
on the cover of this Prospectus Supplement) and (ii) the percentage specified in
the table below, and (b) the amount of accrued interest on the Class 1-A6
Certificates from the Cut-off Date to the Closing Date and (ii) such purchase
price is paid on July 30, 1998.
 
           PRE-TAX YIELD* TO MATURITY OF THE CLASS 1-A6 CERTIFICATES
                  (ASSUMED PURCHASE PRICE PERCENTAGE = 20.75%)
 
<TABLE>
<CAPTION>
                 PREPAYMENT ASSUMPTION
- -------------------------------------------------------
  0%         100%        250%        400%        500%
- -------     -------     -------     -------     -------
<S>         <C>         <C>         <C>         <C>
30.118%     15.921%     15.921%     14.841%     10.342%
</TABLE>
 
- ------------------
* Corporate bond equivalent basis
 
     The preceding table does not take into account the effect of Interest
Shortfalls. The Pool 1 Mortgage Loans will not necessarily have all of the
characteristics assumed and there can be no assurance that (i) the Pool 1
Mortgage Loans will prepay at any of the constant rates shown in the table or at
any particular rate, (ii) the pre-tax yields to maturity on the Class 1-A6
Certificates will correspond to any of the amounts shown herein or (iii) the
purchase price of the Class 1-A6 Certificates will be as assumed. The table does
not constitute a representation as to the rate of prepayments on the Pool 1
Mortgage Loans. Each investor must make its own decision as to the appropriate
prepayment assumption to be used in deciding whether or not to purchase a Class
1-A6 Certificate.
 
SENSITIVITY OF THE CLASS 1-A8, CLASS 1-A9, CLASS 1-A11 AND CLASS 1-A12
CERTIFICATES
 
     The yield to investors in the Class 1-A8, Class 1-A9, Class 1-A11 and Class
1-A12 Certificates will be highly sensitive to the level of LIBOR. Investors in
the Class 1-A8 and Class 1-A11 Certificates should consider (i) the risk that
lower than anticipated levels of LIBOR could result in actual yields that are
lower than anticipated yields on such Certificates and (ii) the fact that the
Certificate Interest Rate on the Class 1-A8 and Class 1-A11 Certificates cannot
exceed 8.50% and 9.0%, respectively (which would occur whenever LIBOR equals or
exceeds 8.0% in the case of the Class 1-A8 Certificates and 8.30% in the case of
the Class 1-A11 Certificates for any relevant Interest Accrual Period other than
the first such period). Conversely, investors in the Class 1-A9 and Class 1-A12
Certificates should consider (i) the risk that higher than anticipated levels of
LIBOR could result in actual yields that are lower than anticipated yields on
such Certificates and (ii) the fact that the rate of interest on the Class 1-A9
and Class 1-A12 Certificates can fall as low as 0.0% (which will occur whenever
LIBOR equals or exceeds 8.0% in the case of the Class 1-A9 Certificates and
8.30% in the case of the 1-A12 Certificates for any relevant Interest Accrual
Period other than the first such period).
 
     Levels of LIBOR may have little or no correlation to levels of prevailing
mortgage interest rates. It is possible that lower prevailing mortgage interest
rates, which might be expected to result in faster prepayments, could occur
concurrently with an increased level of LIBOR. Conversely, higher prevailing
mortgage interest rates, which might be expected to result in slower
prepayments, could occur concurrently with a decreased level of LIBOR. In
addition, the timing of changes in the level of LIBOR may affect the actual
yield to maturity to an investor in the Class 1-A8, Class 1-A9, Class 1-A11 or
Class 1-A12 Certificates even if the average level is consistent with such
investor's expectation. In general, the earlier a change in the level of LIBOR,
the greater the
 
                                     A1-19
<PAGE>

effect on such investor's yield to maturity. As a result, the effect on such
investor's yield to maturity of a level of LIBOR that is higher (or lower) than
the rate anticipated by such investor during the period immediately following
the issuance of the Certificates is not likely to be offset by a subsequent like
reduction (or increase) in the level of LIBOR.
 
     To illustrate the significance of prepayments and of changes in LIBOR on
the distributions on the Class 1-A9 and Class 1-A12 Certificates, the following
tables indicate the pre-tax yields to maturity (on a corporate bond equivalent
basis) under the specified assumptions at the different constant percentages of
the Prepayment Assumption (as defined herein) and the different levels of LIBOR
indicated. The yields were calculated by determining the applicable monthly
discount rate which, when applied to the related assumed stream of cash flows to
be paid on the Class 1-A9 and Class 1-A12 Certificates, would cause the
discounted present value of such cash flows to equal the assumed purchase prices
for such Certificates stated in such table and converting the applicable monthly
discount rate to a corporate bond equivalent rate. Implicit in the use of any
discounted present value or internal rate of return calculations such as these
is the assumption that intermediate cash flows are reinvested at the discount
rate or internal rate of return. Thus, these calculations do not take into
account the different interest rates at which investors may be able to reinvest
funds received by them as distributions on the Class 1-A9 and Class 1-A12
Certificates, and, consequently, do not reflect the return on any investment
when such reinvestment rates are considered. It is not likely that the Mortgage
Loans will prepay at a constant level of the Prepayment Assumption until
maturity, that all of the Mortgage Loans will prepay at the same rate or that
LIBOR will not vary. The timing of changes in the rate of the prepayments may
significantly affect the total distributions received, the date of receipt of
such distributions and the actual yield to maturity to any investor, even if the
average rate of principal prepayments is consistent with an investor's
expectation. In general, the earlier the payment of principal of the Mortgage
Loans, the greater the effect on an investor's yield to maturity. As a result,
the effect on an investor's yield of principal prepayments occurring at a higher
rate (or lower) than the rate anticipated by the investor during the period
immediately following the issuance of the Certificates will not be equally
offset by a subsequent like reduction (or increase) in the rate of principal
prepayments. Moreover, as noted above, the timing of changes in the level of
LIBOR may affect the actual yield to maturity to an investor in Class 1-A9 and
Class 1-A12 Certificates.
 
     The following tables have been prepared based on the Modeling Assumptions
(as defined herein) and the additional assumptions that (i) the assumed purchase
price of the Class 1-A9 and Class 1-A12 Certificates is equal to the sum of (a)
the product of (i) the Class Certificate Principal Balance for such Class (as
set forth on the cover of this Prospectus Supplement) and (ii) the percentage
specified in the table below, and (b) the amount of accrued interest on the
Class 1-A9 and Class 1-A12 Certificates from the Cut-off Date to the Closing
Date and (ii) on the LIBOR Determination Date occurring in August 1998 and on
each LIBOR Determination Date thereafter, LIBOR is the level specified.
 
           PRE-TAX YIELD* TO MATURITY OF THE CLASS 1-A9 CERTIFICATES
                 (ASSUMED PURCHASE PRICE PERCENTAGE = 96.125%)
 
<TABLE>
<CAPTION>
LEVELS OF LIBOR                                   0%       100%      250%      400%      500%
- ---------------------------------------------   ------    ------    ------    ------    ------
<S>                                             <C>       <C>       <C>       <C>       <C>
3.656%.......................................   18.008%   18.139%   18.675%   19.387%   19.691%
5.656%.......................................    9.649%    9.790%   10.380%   11.284%   11.636%
7.656%.......................................    1.547%    1.675%    2.257%    3.385%    3.784%
8.000% and above.............................    0.185%    0.308%    0.877%    2.048%    2.454%
</TABLE>
 
- ------------------
 
* Corporate bond equivalent basis
 
           PRE-TAX YIELD* TO MATURITY OF THE CLASS 1-A12 CERTIFICATES
                 (ASSUMED PURCHASE PRICE PERCENTAGE = 94.625%)
 
<TABLE>
<CAPTION>
LEVELS OF LIBOR                                   0%       100%      250%      400%      500%
- ---------------------------------------------   ------    ------    ------    ------    ------
<S>                                             <C>       <C>       <C>       <C>       <C>
3.656%.......................................   15.039%   15.047%   15.621%   18.100%   18.983%
5.656%.......................................    8.525%    8.542%    9.083%   11.881%   12.825%
7.656%.......................................    2.187%    2.211%    2.661%    5.785%    6.787%
8.300% and above.............................    0.191%    0.216%    0.625%    3.848%    4.868%
</TABLE>
 
- ------------------
 
* Corporate bond equivalent basis
 
                                     A1-20
<PAGE>

     The preceding tables do not take into account the effect of Interest
Shortfalls. The Mortgage Loans will not have all of the characteristics assumed
and there can be no assurance (i) that the Mortgage Loans will prepay at any of
the constant rates shown in the tables or at any particular rate, (ii) that the
pre-tax yields to maturity on the Class 1-A9 and Class 1-A12 Certificates will
correspond to any of the amounts shown herein, (ii) that the levels of LIBOR
will correspond to the levels shown herein or (iv) that the purchase price of
the Class 1-A9 and Class 1-A12 Certificates will be as assumed. The tables do
not constitute a representation as to the correlation of any level of LIBOR and
the rate of prepayments on the Mortgage Loans. Each investor must make its own
decision as to the appropriate prepayment assumptions to be used and the
appropriate levels of LIBOR to be assumed in deciding whether or not to purchase
a Class 1-A9 and Class 1-A12 Certificate.
 
THE CLASS 1-M, CLASS 1-B1 AND CLASS 1-B2 CERTIFICATES
 
     The rate of payment of principal, the aggregate amount of distributions and
the yield to maturity of the Class 1-M, Class 1-B1 and Class 1-B2 Certificates
will be affected by the rate of prepayments on the Pool 1 Mortgage Loans, as
well as the rate of mortgagor defaults resulting in Realized Losses in respect
of such Mortgage Loans, by the severity of those losses and by the timing
thereof. See 'Pool 1 Annex--Allocation of Realized Losses on the Pool 1
Certificates' herein for a description of the manner in which such losses are
borne by the holders of the Pool 1 Certificates. If the purchaser of a Class
1-M, Class 1-B1 or Class 1-B2 Certificate calculates its anticipated yield based
on an assumed rate of default and amount of Realized Losses in respect of the
related Mortgage Loans that is lower than the default rate and the amount of
losses actually incurred, its actual yield to maturity may be lower than that so
calculated and could be negative. The timing of defaults and losses will also
affect an investor's actual yield to maturity, even if the average rate of
defaults and severity of losses are consistent with an investor's expectations.
In general, the earlier a loss occurs, the greater the effect on an investor's
yield to maturity.
 
     The yields to maturity on the Classes of Class 1-B Certificates with higher
numerical designations will be more sensitive to losses due to liquidations of
defaulted Pool 1 Mortgage Loans than will the yields on such Classes with lower
numerical designations, and the yields to maturity on all of the Class 1-B
Certificates will be more sensitive to such losses than will the yields on the
other Classes of related Certificates. The yields to maturity on the Class 1-M
Certificates will be more sensitive to such losses than will the yields on the
Pool 1 Senior Certificates and less sensitive than the yields on the Class 1-B
Certificates. The Pool 1 Junior Certificates will be more sensitive to losses
due to liquidations of defaulted Pool 1 Mortgage Loans because the entire amount
of such losses will be allocable to such Certificates in inverse order of
priority, either directly or through the allocation of the Class 1-PO Deferred
Payment Writedown Amount, except as provided herein. To the extent not covered
by the Company's advances of delinquent monthly payments of principal and
interest, delinquencies on the Pool 1 Mortgage Loans may also have a relatively
greater effect (i) on the yields to investors in the related Class 1-B
Certificates with higher numerical designations than on the yields to investors
in those related Class 1-B Certificates with lower numerical designations, (ii)
on the yields to investors in the related Class 1-B Certificates than on the
yields to investors in the other Classes of related Certificates, and (iii) on
the yields to investors in the Class 1-M Certificates than on the yields to
investors in the related Senior Certificates. As described above under 'Pool 1
Annex--Distributions on the Pool 1 Certificates--Interest' and '--Principal,'
'--Allocation of Realized Losses on the Pool 1 Certificates' and
'--Subordination,' amounts otherwise distributable to holders of any Class of
Pool 1 Class B Certificates will be made available to protect the holders of the
more senior ranking Classes of Pool 1 Certificates against interruptions in
distributions due to certain mortgagor delinquencies. Amounts otherwise
distributable to holders of the Class 1-M Certificates will be made available to
protect the holders of the Pool 1 Senior Certificates against interruptions in
distributions due to certain mortgagor delinquencies. Such delinquencies, even
if subsequently cured, may affect the timing of the receipt of distributions by
the holders of such Junior Certificates.
 
     To the extent that the Class 1-M, Class 1-B1 or Class 1-B2 Certificates are
being purchased at discounts from their initial Class Certificate Principal
Balances, if the purchaser of such a Certificate calculates its yield to
maturity based on an assumed rate of payment of principal faster than that
actually received on such Certificate, its actual yield to maturity may be lower
than that so calculated.
 
                                     A1-21

<PAGE>

FINAL PAYMENT CONSIDERATIONS
 
     The rate of payment of principal of the Pool 1 Certificates will depend on
the rate of payment of principal of the related Mortgage Loans (including
prepayments, defaults, delinquencies and liquidations) which, in turn, will
depend on the characteristics of such Mortgage Loans, the level of prevailing
interest rates and other economic, geographic, social and other factors, and no
assurance can be given as to the actual payment experience. As of the Cut-off
Date, the month and year of the latest scheduled maturity of a Mortgage Loan in
Pool 1 is expected to be July 2028. In addition, to the extent delinquencies and
defaults are not covered by advances made by the Company or offset by the effect
of the subordination of the related Junior Certificates, delinquencies and
defaults could affect the actual maturity of the Certificates offered hereby.
 
WEIGHTED AVERAGE LIVES OF THE POOL 1 CERTIFICATES
 
     The weighted average life of a Certificate is determined by (a) multiplying
the reduction, if any, in the Certificate Principal Balance thereof on each
Distribution Date by the number of years from the date of issuance to such
Distribution Date, (b) summing the results and (c) dividing the sum by the
aggregate reductions in the Certificate Principal Balance of such Certificate.
 
     The weighted average lives of the Pool 1 Certificates will be affected, to
varying degrees, by the rate of principal payments on the Pool 1 Mortgage Loans,
the timing of changes in such rate of payments and the priority sequence of
distributions of principal of such Certificates. The interaction of the
foregoing factors may have different effects on the various Classes of the
Certificates and the effects on any Class may vary at different times during the
life of such Class. Further, to the extent the prices of Classes of Certificates
represent discounts or premiums to their respective original Class Certificate
Principal Balances, variability in the weighted average lives of such Classes of
Certificates could result in variability in the related yields to maturity.
 
     Prepayments on mortgage loans are commonly measured relative to a
prepayment standard or model. The model used in this Prospectus Supplement (the
'Prepayment Assumption') represents an assumed rate of prepayment each month
relative to the then outstanding principal balance of a pool of mortgage loans.
The Prepayment Assumption does not purport to be either a historical description
of the prepayment experience of any pool of mortgage loans or a prediction of
the anticipated rate of prepayment of any pool of mortgage loans, including the
Mortgage Loans in either Mortgage Pool. A prepayment assumption of 100% of the
Prepayment Assumption assumes prepayment rates of 0.2% per annum of the then
outstanding principal balance of such mortgage loans in the first month of the
life of the mortgage loans and increasing by 0.2% per annum in each month
thereafter until the thirtieth month. Beginning in the thirtieth month and in
each month thereafter during the life of the mortgage loans, 100% of the
Prepayment Assumption assumes a constant prepayment rate of 6.0% per annum.
 
     Pool 1 PAC Certificates.  The Aggregate Pool 1 PAC Balance schedule for the
Pool 1 PAC Certificates were prepared by calculating the amounts that would be
available for payments on the Pool 1 PAC Certificates, using, among other
things, the Pool 1 Modeling Assumptions (as defined below) and a range of
constant Mortgage Loan prepayment rates (the 'Pool 1 PAC Structuring Range')
expressed as a percentage of the Prepayment Assumption. The Pool 1 PAC
Structuring Range is 100% through 350% of the Prepayment Assumption. The
Aggregate Pool 1 PAC Balance is set forth in the Pool 1 Scheduled Balances Table
attached to this Pool 1 Annex.
 
     Principal distributions on each Class of Pool 1 PAC Certificates are likely
to be relatively stable so long as Pool 1 Mortgage Loan prepayments are neither
too fast nor too slow to support such schedules. Moreover, if the Pool 1 PAC
Certificates fall behind their aggregate schedules, they will have cumulative
priority for future principal distributions from amounts available for
distribution of principal in accordance with the priorities specified in
priority third under 'Pool 1 Annex--The Pool 1 Mortgage Loans and the Pool 1
Certificates-- Distributions on the Pool 1 Certificates.'
 
     The Pool 1 Mortgage Loans will likely have payment and performance
characteristics that differ from those assumed in the Pool 1 Modeling
Assumptions. Due to the effects of any variance permitted hereby, the aggregate
Pool 1 PAC Balance schedules could be different from those set forth in Pool 1
Scheduled Balances Table attached to this Pool 1 Annex.
 
                                     A1-22

<PAGE>

     For each Class of Pool 1 PAC Certificates, there is a range of constant
Mortgage Loan prepayment rates (a 'Targeted Range') within which payments on the
Pool 1 PAC Certificates will remain relatively stable. The initial Targeted
Range for a particular Class of Pool 1 PAC Certificates may be wider than the
Pool 1 PAC Structuring Range set forth above. The Targeted Range at any time
depends on the actual characteristics of the Pool 1 Mortgage Loans at that time.
The Targeted Range for any Class of Pool 1 PAC Certificates can narrow or
'shift' upward or downward over time as a result of the rates of principal
payments actually experienced on the Pool 1 Mortgage Loans. Moreover, the Pool 1
Mortgage Loans will not prepay at any constant rate and there can be no
assurance that the amount available for principal distributions on any Class of
Pool 1 PAC Certificates on any Distribution Date will be sufficient to reduce
the aggregate Class Certificate Principal Balance of the Pool 1 PAC Certificates
to the Aggregate Pool 1 PAC Balance for such Distribution Date. Non-constant
prepayment rates can cause the related Classes of Pool 1 PAC Certificates not to
adhere to the Aggregate Pool 1 PAC Balance schedule even if such rates remain
within the initial Targeted Range.
 
     If the Pool 1 Mortgage Loans prepay at rates that are generally below the
Targeted Range for the Pool 1 PAC Certificates, the amount available for
principal distributions thereon on any Distribution Date may be insufficient to
reduce the aggregate Class Certificate Principal Balance of the Pool 1 PAC
Certificates to the Aggregate Pool 1 PAC Balance schedule, and the weighted
average life of such Classes may be extended, perhaps significantly. Conversely,
if the Pool 1 Mortgage Loans prepay at rates that are generally above the
Targeted Range of the Pool 1 PAC Certificates, the weighted average life of the
Classes related thereto may be shortened, perhaps significantly.
 
     The principal payment stability of the Pool 1 PAC Certificates will be
supported by the Pool 1 TAC Certificates, the Pool 1 Scheduled Certificates,
Class 1-A10, Class 1-A11 and Class 1-A12 Certificates. As a result, the Pool 1
PAC Certificates will be less sensitive to Pool 1 Mortgage Loan prepayment rates
than such other Certificates. When the Class Certificate Principal Balances of
such other Certificates have been reduced to zero, the Pool 1 PAC Certificates
will become more sensitive to Pool 1 Mortgage Loan prepayments.
 
     Pool 1 Scheduled Certificates.  Principal distributions on each of the
Class 1-A7, Class 1-A13 and Class 1-A14 Certificates (the 'Pool 1 Scheduled
Certificates') are likely to be relatively stable so long as Pool 1 Mortgage
Loan prepayments are neither too fast nor too slow to support the Aggregate Pool
1 Scheduled Balance schedule.
 
     The Aggregate Pool 1 Scheduled Balance schedule for the Pool 1 Scheduled
Certificates was prepared by calculating the amounts that would be available for
payment on the Pool 1 Scheduled Certificates using, among other things, the Pool
1 Modeling Assumptions (as defined below) and a range of constant Mortgage Loan
prepayment rates expressed as a percentage of the Prepayment Assumption. The
structuring range used in the derivation of both the Aggregate Pool 1 Scheduled
Balance schedule and the Class 1-A13 Scheduled Balance schedule is 200% through
250% of the Prepayment Assumption.
 
     The Mortgage Loans will likely have payment and performance characteristics
that differ from those assumed in the Pool 1 Modeling Assumptions. Due to the
effects of any variance permitted hereby, the Aggregate Pool 1 Scheduled Balance
schedule could be different from that set forth in the Aggregate Pool 1
Scheduled Balances Table attached to this Pool 1 Annex.
 
     Although the Pool 1 Scheduled Certificates receive some protection from
fast or slow prepayment rates through the operation of the Aggregate Pool 1
Scheduled Balance schedule, the range of constant Pool 1 Mortgage Loan
prepayment rates at which the weighted average lives of the Pool 1 Scheduled
Certificates would be shielded from sensitivity to Pool 1 Mortgage Loan
prepayments, is narrower than the corresponding Targeted Ranges for the Pool 1
PAC Certificates.
 
     The Scheduled Certificates also support the principal payment stability of
the Pool 1 PAC Certificates. As a result, the weighted average lives of the Pool
1 Scheduled Certificates will be more sensitive to Pool 1 Mortgage Loan
prepayment rates than those of the Pool 1 PAC Certificates but less sensitive to
Pool 1 Mortgage Loan prepayment rates than the other Pool 1 Certificates.
 
     Pool 1 TAC Certificates.  Principal distributions on the Class 1-A8 and
Class 1-A9 Certificates (the 'Pool 1 TAC Certificates') are expected to be more
stable than would be the case if the Pool 1 TAC Certificates were not entitled
to receive payments, to the extent of available principal, according to their
Aggregate Pool 1 TAC Balances Schedules. Based on the Pool 1 Modeling
Assumptions, the Pool 1 TAC Certificates would pay
 
                                     A1-23

<PAGE>

down in accordance with their Aggregate Pool 1 TAC Balances schedules if the
Pool 1 Mortgage Loans were to prepay at a constant rate of 250% of the
Prepayment Assumption until the Class Certificate Principal Balance thereof has
been reduced to zero. However, because the actual characteristics of the
Mortgage Loans in Pool 1 may differ from those assumed in the Pool 1 Modeling
Assumptions, and because such Mortgage Loans will not prepay at a constant rate
of 250% of the Prepayment Assumption or any other prescribed constant rate, it
is not likely that the Pool 1 TAC Certificates will consistently pay down in
accordance with their Aggregate Pool 1 TAC Balances schedules. The Aggregate TAC
Balances schedules for the Pool 1 TAC Certificates are set forth in the Pool 1
TAC Balances Table attached to this Pool 1 Annex.
 
     The principal payment stability of the Pool 1 TAC Certificates will be
supported by the Class 1-A10 Certificates. When the Certificate Principal
Balances of the Class 1-A10 Certificates have been reduced to zero, the Pool 1
TAC Certificates, if then outstanding, will become more sensitive to Pool 1
Mortgage Loan prepayments.
 
     If the Pool 1 Mortgage Loans prepay at rates that are generally below 250%
of the Prepayment Assumption, the Pool 1 TAC Certificates will not be reduced to
their Aggregate Pool 1 TAC Balances and the weighted average life of the Pool 1
TAC Certificates may be extended, perhaps significantly. If the Pool 1 Mortgage
Loans prepay at rates that are generally above 250% of the Prepayment
Assumption, the weighted average life of the Pool 1 TAC Certificates may be
shortened, perhaps significantly.
 
     The entire Pool 1 Available Funds will be distributed monthly on each
Distribution Date and will not be retained for distribution on subsequent
Distribution Dates. Thus, the likelihood that the Aggregate Pool 1 TAC
Certificates will pay down in accordance with their Aggregate TAC Balances
schedules will not be enhanced by averaging high and low principal payments in
different months.
 
     Pool 1 Support Certificates.  The Pool 1 Scheduled Certificates, the Pool 1
TAC Certificates and the Class 1-A10, Class 1-A11 and Class 1-A12 Certificates
support the principal payment stability of the Pool 1 PAC Certificates. The
Class 1-A10 Certificates support the principal payment stability of the Pool 1
TAC Certificates. The Class 1-A11 and Class 1-A12 Certificates support the
principal payment stability of the Pool 1 Scheduled Certificates, and the Class
1-A14 Certificates support the principal payment stability of the Class 1-A13
Certificates. As a result, the weighted average lives of Pool 1 Scheduled
Certificates, the Pool 1 TAC Certificates and the Class 1-A10, Class 1-A11 and
Class 1-A12 Certificates will be more sensitive to Pool 1 Mortgage Loan
prepayments than the Pool 1 PAC Certificates, the weighted average lives of
Class 1-A10 Certificates will be more sensitive to Pool 1 Mortgage Loan
prepayments than the Pool 1 TAC Certificates, the weighted average lives of the
Class 1-A11 and Class 1-A12 Certificates will be more sensitive to Pool 1
Mortgage Loan prepayments than the Class 1-A7, Class 1-A13 and Class 1-A14
Certificates and the weighted average lives of the Class 1-A14 Certificates will
be more sensitive to Pool 1 Mortgage Loan prepayments than the Class 1-A13
Certificates. The Pool 1 Scheduled, Pool 1 TAC and the Class 1-A10, Class 1-A11
and Class 1-A12 Certificates may receive no principal payments for extended
periods of time or may receive principal payments that vary widely from period
to period. To the extent that a low rate of principal payments on the Pool 1
Mortgage Loans results in Pool 1 Available Funds on any Distribution Date being
equal to or less than the amount required to be distributed as principal on the
Pool 1 PAC Certificates, Pool 1 TAC Certificates or Pool 1 Scheduled
Certificates in accordance with the related schedules, the following Classes of
Certificates will receive no principal on such Distribution Date: (i) the Pool 1
Scheduled, the Pool 1 TAC, Class 1-A10, Class 1-A11 and Class 1-A12 Certificates
(if the Pool 1 PAC Certificates have not been reduced to the Aggregate Pool 1
PAC Balance for such Distribution Date); (ii) the Class 1-A10 Certificates (if
the Pool 1 TAC Certificates have not been reduced to the Aggregate Pool 1 TAC
Balance for such Distribution Date); (iii) the Class 1-A11 and Class 1-A12
Certificates (if the Pool 1 Scheduled Certificates have not been reduced to the
Aggregate Pool 1 Scheduled Balance for such Distribution Date) and (iv) the
Class 1-A14 Certificates (if the Class 1-A13 Certificates have not been reduced
to the Class 1-A13 Scheduled Balance for such Distribution Date). Conversely, to
the extent that a high rate of principal payments results in Pool 1 Available
funds being in excess of such amount, such excess will be applied, to the extent
of the Pool 1 Senior Optimal Principal Amount, to the related Certificates until
the Class Certificate Principal Balance thereof have each been reduced to zero.
Thus, a rapid rate of prepayments in respect of the Pool 1 Mortgage Loans may
significantly shorten the weighted average lives of such Certificates and a
relatively slow rate of prepayments on such Pool 1 Mortgage Loans may
significantly extend the weighted average lives of such Certificates.
 
                                     A1-24
<PAGE>
 
    Tables of Pool 1 Class Certificate Principal Balances. The following tables
set forth the percentages of the initial Class Certificate Principal Balance of
each Class of Pool 1 Certificates offered hereby that would be outstanding after
each of the dates shown at the specified constant percentages of the Prepayment
Assumption and the corresponding weighted average life of each such Class of
Pool 1 Certificates. For purposes of calculations under the columns at the
indicated percentages of the Prepayment Assumption set forth in the tables, it
is assumed with respect to the Pool 1 Mortgage Loans (the 'Pool 1 Modeling
Assumptions') that (i) the distributions in respect of the Pool 1 Certificates
are made and received in cash on the 25th day of each month commencing in August
1998, (ii) the Pool 1 Mortgage Loans prepay at the specified constant
percentages of the Prepayment Assumption, (iii) the aggregate outstanding
principal balance of the Pool 1 Mortgage Loans as of the Cut-off Date is
$400,661,896, (iv) no defaults or delinquencies in the payment by Mortgagors of
principal of and interest on the Pool 1 Mortgage Loans are experienced and the
Company does not repurchase any of the Pool 1 Mortgage Loans as permitted or
required by the Agreement, (v) the Company does not exercise its option to
repurchase all the Mortgage Loans in the Trust Fund as described under the
caption 'The Pooling and Servicing Agreement--Termination' herein, (vi)
scheduled monthly payments on the Pool 1 Mortgage Loans are received on the
first day of each month commencing in August 1998, and are computed prior to
giving effect to prepayments received in the prior month, (vii) prepayments
representing payment in full of individual Pool 1 Mortgage Loans are received on
the last day of each month (commencing in July 1998) and include 30 days'
interest thereon, and no Interest Shortfalls occur in respect of the Pool 1
Mortgage Loans, (viii) the scheduled monthly payment for each Pool 1 Mortgage
Loan has been calculated based on its outstanding balance, interest rate and
remaining term to maturity such that such Mortgage Loan will amortize in amounts
sufficient to repay the remaining balance of such Mortgage Loan by its remaining
term to maturity, (ix) the initial Class Certificate Principal Balance and
Certificate Interest Rate for each Class of Pool 1 Certificates offered hereby
are as indicated on the cover page hereof, (x) the date of the initial issuance
of the Pool 1 Certificates is July 30, 1998, (xi) the amounts distributable to
Pool 1 Certificateholders are not reduced by the incurrence of any expenses by
the Pool 1 Trust Fund and (xii) the Pool 1 Mortgage Loans are divided into two
groups (each, a 'Pool 1 Mortgage Loan Group') and the Pool 1 Mortgage Loans in
each Pool 1 Mortgage Loan Group have the respective characteristics described
below (the Aggregate Scheduled Principal Balance shown below for each Pool 1
Mortgage Loan Group has been rounded to the nearest dollar):
 
<TABLE>
<CAPTION>
                                                 AGGREGATE                                                  STATED
                                                 SCHEDULED                                                 REMAINING
                                             PRINCIPAL BALANCE                     NET                      TERM TO
                                                 AS OF THE        MORTGAGE       MORTGAGE        AGE       MATURITY
MORTGAGE LOAN GROUP                            CUT-OFF DATE         RATE           RATE        (MONTHS)    (MONTHS)
- ------------------------------------------   -----------------   ----------    ------------    --------    ---------
<S>                                          <C>                 <C>           <C>             <C>         <C>
Discount..................................     $  39,770,456     6.85282965%     6.60413505%       2          357
Non-Discount..............................       360,891,440     7.43575444      7.18339488        1          358
</TABLE>
 
     It is not likely that the Pool 1 Mortgage Loans will prepay at a constant
level of the Prepayment Assumption. In addition, because certain of the Pool 1
Mortgage Loans will have remaining terms to maturity and will bear interest at
rates that are different from those assumed, the actual Class Certificate
Principal Balance of each Class of Pool 1 Certificates outstanding at any time
and the actual weighted average life of each Class of Pool 1 Certificates would
differ (which difference could be material) from the corresponding information
in the tables for each indicated percentage of the Prepayment Assumption.
Furthermore, even if all the Pool 1 Mortgage Loans prepay at the indicated
percentage of the Prepayment Assumption and the weighted average mortgage
interest rate and weighted average stated remaining term to maturity of the Pool
1 Mortgage Loans were to equal the weighted average mortgage interest rate and
weighted average stated remaining term to maturity of the assumed Pool 1
Mortgage Loans, due to the actual distribution of remaining terms to maturity
and interest rates among the Pool 1 Mortgage Loans, the actual Class Certificate
Principal Balance of each Class of Certificates outstanding at any time and the
actual weighted average life of each Class of Certificates would differ (which
difference could be material) from the corresponding information in the tables
for each indicated percentage of the Prepayment Assumption.
 
                                     A1-25

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 1 CERTIFICATES
<TABLE>
<CAPTION>
                                                                                                                     CLASS 1-A3
                                                      CLASS 1-A1                         CLASS 1-A2              ------------------
                                           --------------------------------   --------------------------------
                                                                                                                     PREPAYMENT
                                                PREPAYMENT ASSUMPTION              PREPAYMENT ASSUMPTION             ASSUMPTION
                                           --------------------------------   --------------------------------   ------------------
DISTRIBUTION DATE                           0%    100%   250%   400%   500%    0%    100%   250%   400%   500%    0%    100%   250%
- -----------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                        <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage.......................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 1999................................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 2000................................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 2001................................    95    72     72     72     72     100   100    100    100    100     100   100    100
July 2002................................    87    26     26     26      0     100   100    100    100     87     100   100    100
July 2003................................    77     0      0      0      0     100    77     77     66      0     100   100    100
July 2004................................    67     0      0      0      0     100    23     23      0      0     100   100    100
July 2005................................    57     0      0      0      0     100     0      0      0      0     100    74     74
July 2006................................    45     0      0      0      0     100     0      0      0      0     100    32     32
July 2007................................    33     0      0      0      0     100     0      0      0      0     100     0      0
July 2008................................    19     0      0      0      0     100     0      0      0      0     100     0      0
July 2009................................     5     0      0      0      0     100     0      0      0      0     100     0      0
July 2010................................     0     0      0      0      0      86     0      0      0      0     100     0      0
July 2011................................     0     0      0      0      0      64     0      0      0      0     100     0      0
July 2012................................     0     0      0      0      0      39     0      0      0      0     100     0      0
July 2013................................     0     0      0      0      0      13     0      0      0      0     100     0      0
July 2014................................     0     0      0      0      0       0     0      0      0      0      87     0      0
July 2015................................     0     0      0      0      0       0     0      0      0      0      59     0      0
July 2016................................     0     0      0      0      0       0     0      0      0      0      30     0      0
July 2017................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2018................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2019................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2020................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2021................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2022................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2023................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2024................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2025................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2026................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2027................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2028................................     0     0      0      0      0       0     0      0      0      0       0     0      0
Weighted Average Life
  (in years)(1)..........................   7.4   3.5    3.5    3.5    3.3    13.5   5.5    5.5    5.2    4.3    17.3   7.6    7.6
 
<CAPTION>
 
DISTRIBUTION DATE                          400%   500%
- -----------------------------------------  ----   ----
<S>                                        <C>    <C>
Initial Percentage.......................  100    100
July 1999................................  100    100
July 2000................................  100    100
July 2001................................  100    100
July 2002................................  100    100
July 2003................................  100     80
July 2004................................   88     15
July 2005................................   34      0
July 2006................................    0      0
July 2007................................    0      0
July 2008................................    0      0
July 2009................................    0      0
July 2010................................    0      0
July 2011................................    0      0
July 2012................................    0      0
July 2013................................    0      0
July 2014................................    0      0
July 2015................................    0      0
July 2016................................    0      0
July 2017................................    0      0
July 2018................................    0      0
July 2019................................    0      0
July 2020................................    0      0
July 2021................................    0      0
July 2022................................    0      0
July 2023................................    0      0
July 2024................................    0      0
July 2025................................    0      0
July 2026................................    0      0
July 2027................................    0      0
July 2028................................    0      0
Weighted Average Life
  (in years)(1)..........................  6.7    5.5
</TABLE>
 
- ------------------
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A1-26
<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 1 CERTIFICATES
<TABLE>
<CAPTION>
                                                                                                                    CLASS 1-A6+
                                                      CLASS 1-A4                         CLASS 1-A5              ------------------
                                           --------------------------------   --------------------------------
                                                                                                                     PREPAYMENT
                                                PREPAYMENT ASSUMPTION              PREPAYMENT ASSUMPTION             ASSUMPTION
                                           --------------------------------   --------------------------------   ------------------
DISTRIBUTION DATE                           0%    100%   250%   400%   500%    0%    100%   250%   400%   500%    0%    100%   250%
- -----------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                        <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage.......................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 1999................................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 2000................................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 2001................................   100   100    100    100    100     100   100    100    100    100      97    83     83
July 2002................................   100   100    100    100    100     100   100    100    100    100      92    54     54
July 2003................................   100   100    100    100    100     100   100    100    100    100      86    31     31
July 2004................................   100   100    100    100    100     100   100    100    100    100      80    16     16
July 2005................................   100   100    100    100     62     100   100    100    100    100      73     8      8
July 2006................................   100   100    100     94     26     100   100    100    100    100      66     3      3
July 2007................................   100   100    100     58      3     100   100    100    100    100      58     0      0
July 2008................................   100    67     67     32      0     100   100    100    100     74      50     0      0
July 2009................................   100    42     42     13      0     100   100    100    100     51      41     0      0
July 2010................................   100    23     23      0      0     100   100    100     97     34      34     0      0
July 2011................................   100     8      8      0      0     100   100    100     72     23      28     0      0
July 2012................................   100     0      0      0      0     100    91     91     53     16      21     0      0
July 2013................................   100     0      0      0      0     100    69     69     39     11      14     0      0
July 2014................................   100     0      0      0      0     100    53     53     28      7       9     0      0
July 2015................................   100     0      0      0      0     100    40     40     21      5       6     0      0
July 2016................................   100     0      0      0      0     100    30     30     15      3       3     0      0
July 2017................................    98     0      0      0      0     100    22     22     11      2       0     0      0
July 2018................................    53     0      0      0      0     100    17     17      8      1       0     0      0
July 2019................................     5     0      0      0      0     100    12     12      5      1       0     0      0
July 2020................................     0     0      0      0      0       9     9      9      4      1       0     0      0
July 2021................................     0     0      0      0      0       6     6      6      3      *       0     0      0
July 2022................................     0     0      0      0      0       4     4      4      2      *       0     0      0
July 2023................................     0     0      0      0      0       3     3      3      1      *       0     0      0
July 2024................................     0     0      0      0      0       2     2      2      1      *       0     0      0
July 2025................................     0     0      0      0      0       1     1      1      *      *       0     0      0
July 2026................................     0     0      0      0      0       1     1      1      *      *       0     0      0
July 2027................................     0     0      0      0      0       *     *      *      *      *       0     0      0
July 2028................................     0     0      0      0      0       0     0      0      0      0       0     0      0
Weighted Average Life
  (in years)(1)..........................  20.1   10.9   10.9   9.5    7.5    21.8   17.1   17.1   15.1   11.8   10.1   4.5    4.5
 
<CAPTION>
 
DISTRIBUTION DATE                          400%   500%
- -----------------------------------------  ----   ----
<S>                                        <C>    <C>
Initial Percentage.......................  100    100
July 1999................................  100    100
July 2000................................  100    100
July 2001................................   83     83
July 2002................................   54     34
July 2003................................   29      8
July 2004................................    9      1
July 2005................................    3      0
July 2006................................    0      0
July 2007................................    0      0
July 2008................................    0      0
July 2009................................    0      0
July 2010................................    0      0
July 2011................................    0      0
July 2012................................    0      0
July 2013................................    0      0
July 2014................................    0      0
July 2015................................    0      0
July 2016................................    0      0
July 2017................................    0      0
July 2018................................    0      0
July 2019................................    0      0
July 2020................................    0      0
July 2021................................    0      0
July 2022................................    0      0
July 2023................................    0      0
July 2024................................    0      0
July 2025................................    0      0
July 2026................................    0      0
July 2027................................    0      0
July 2028................................    0      0
Weighted Average Life
  (in years)(1)..........................  4.3    3.8
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
 + The information shown for the Class 1-A6 Certificates is for illustrative
   purposes only, as the Class 1-A6 Certificates are not entitled to
   distributions of principal and have no weighted average life. Because the
   Notional Principal Balance of the Class 1-A6 Certificates will be determined
   by reference to the Class Certificate Principal Balance of the Class 1-A1,
   Class 1-A2 and Class 1-A3 Certificates, reductions to the aggregate Notional
   Principal Balance of the Class 1-A6 Certificates will occur concurrently with
   the reduction to the Class Certificate Principal Balance of the Class 1-A1,
   Class 1-A2 and Class 1-A3 Certificates as described herein. The weighted
   average lives shown for the Class 1-A6 Certificates have been calculated on
   the assumption that a reduction in the Notional Principal Balance thereof is
   a distribution of principal.
 
                                     A1-27

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 1 CERTIFICATES
<TABLE>
<CAPTION>
                                                                                                                   CLASS 1-A11 AND
                                                                                                                     CLASS 1-A12
                               CLASS 1-A7             CLASS 1-A8 AND CLASS 1-A9             CLASS 1-A10            ----------------
                      ----------------------------   ----------------------------   ----------------------------
                                                                                                                      PREPAYMENT
                         PREPAYMENT ASSUMPTION          PREPAYMENT ASSUMPTION          PREPAYMENT ASSUMPTION          ASSUMPTION
                      ----------------------------   ----------------------------   ----------------------------   ----------------
DISTRIBUTION DATE      0%   100%  250%  400%  500%    0%   100%  250%  400%  500%    0%   100%  250%  400%  500%    0%   100%  250%
- --------------------- ----  ----  ----  ----  ----   ----  ----  ----  ----  ----   ----  ----  ----  ----  ----   ----  ----  ----
<S>                   <C>   <C>   <C>   <C>   <C>    <C>   <C>   <C>   <C>   <C>    <C>   <C>   <C>   <C>   <C>    <C>   <C>   <C>
Initial Percentage...  100  100   100   100   100     100  100   100   100   100     100  100   100   100   100     100  100   100
July 1999............   98   94    90    90    90      98   95    91    86    83     107  107   107     0     0     100  100    94
July 2000............   95   81    67    67    61      96   86    70    55    46     114  114   114     0     0     100  100    80
July 2001............   94   74    48    34    13      95   80    51    25    10     122  122   122     0     0     100  100    62
July 2002............   94   74    38    11     0      95   80    40     8     0     131  131   131     0     0     100  100    50
July 2003............   94   74    30     0     0      95   80    33     0     0     140  140   140     0     0     100  100    43
July 2004............   94   74    24     0     0      95   80    27     0     0     150  150   150     0     0     100  100    38
July 2005............   94   74    20     0     0      95   80    24     0     0     160  160   160     0     0     100  100    37
July 2006............   94   74    18     0     0      95   80    22     0     0     171  171   171     0     0     100  100    37
July 2007............   94   72    15     0     0      95   78    20     0     0     183  183   183     0     0     100  100    37
July 2008............   94   68    13     0     0      95   76    18     0     0     196  196   196     0     0     100  100    37
July 2009............   94   63    10     0     0      95   72    16     0     0     210  210   210     0     0     100  100    37
July 2010............   94   58     7     0     0      95   68    14     0     0     224  224   224     0     0     100  100    37
July 2011............   94   52     5     0     0      95   63    12     0     0     240  240   240     0     0     100  100    37
July 2012............   94   46     2     0     0      95   59    10     0     0     257  257   257     0     0     100  100    37
July 2013............   94   40     *     0     0      95   54     9     0     0     274  274   274     0     0     100  100    37
July 2014............   94   34     0     0     0      95   50     7     0     0     294  294   294     0     0     100  100    32
July 2015............   94   28     0     0     0      95   45     6     0     0     314  314   314     0     0     100  100    27
July 2016............   94   22     0     0     0      95   41     5     0     0     336  336   336     0     0     100  100    22
July 2017............   94   16     0     0     0      95   36     4     0     0     359  359   359     0     0     100  100    18
July 2018............   94   11     0     0     0      95   32     3     0     0     384  384   384     0     0     100  100    15
July 2019............   94    5     0     0     0      95   28     2     0     0     411  411   411     0     0     100  100    12
July 2020............   92    *     0     0     0      93   24     1     0     0     440  440   440     0     0     100  100    10
July 2021............   80    0     0     0     0      84   20     1     0     0     470  470   470     0     0     100   85     7
July 2022............   67    0     0     0     0      74   16     *     0     0     503  503   503     0     0     100   71     6
July 2023............   52    0     0     0     0      63   13     0     0     0     538  538   432     0     0     100   57     4
July 2024............   37    0     0     0     0      52   10     0     0     0     576  576   306     0     0     100   44     3
July 2025............   21    0     0     0     0      39    6     0     0     0     616  616   201     0     0     100   32     2
July 2026............    3    0     0     0     0      26    3     0     0     0     658  658   116     0     0     100   20     1
July 2027............    0    0     0     0     0      11    1     0     0     0     704  704    47     0     0      51    9     *
July 2028............    0    0     0     0     0       0    0     0     0     0       0    0     0     0     0       0    0     0
Weighted Average Life
  (in years)(1)...... 23.8  11.8  4.4   2.5   2.1    24.9  15.1  5.4   2.3   1.9    29.8  29.5  26.7  0.1   0.1    29.0  25.7  9.1
 
<CAPTION>
 
DISTRIBUTION DATE      400%  500%
- ---------------------  ----  ----
<S>                   <C>    <C>
Initial Percentage...  100   100
July 1999............   76    63
July 2000............   20     0
July 2001............    0     0
July 2002............    0     0
July 2003............    0     0
July 2004............    0     0
July 2005............    0     0
July 2006............    0     0
July 2007............    0     0
July 2008............    0     0
July 2009............    0     0
July 2010............    0     0
July 2011............    0     0
July 2012............    0     0
July 2013............    0     0
July 2014............    0     0
July 2015............    0     0
July 2016............    0     0
July 2017............    0     0
July 2018............    0     0
July 2019............    0     0
July 2020............    0     0
July 2021............    0     0
July 2022............    0     0
July 2023............    0     0
July 2024............    0     0
July 2025............    0     0
July 2026............    0     0
July 2027............    0     0
July 2028............    0     0
Weighted Average Life
  (in years)(1)......  1.5   1.2
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A1-28

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 1 CERTIFICATES

<TABLE>
<CAPTION>
                                                                  CLASS 1-A13                            CLASS 1-A14
                                                      ------------------------------------       ----------------------------
                                                             PREPAYMENT ASSUMPTION                  PREPAYMENT ASSUMPTION
                                                      ------------------------------------       ----------------------------
DISTRIBUTION DATE                                      0%     100%    250%    400%    500%        0%     100%    250%    400%
- ---------------------------------------------------   ----    ----    ----    ----    ----       ----    ----    ----    ----
<S>                                                   <C>     <C>     <C>     <C>     <C>        <C>     <C>     <C>     <C>
Initial Percentage.................................    100    100     100     100     100         100    100     100     100
July 1999..........................................     97     93      90      90      90         107    107      90      90
July 2000..........................................     94     80      67      67      63         114    114      67      67
July 2001..........................................     93     72      48      35      13         122    122      48       0
July 2002..........................................     93     72      38      12       0         131    131      38       0
July 2003..........................................     92     72      30       0       0         140    140      30       0
July 2004..........................................     92     72      24       0       0         150    150      24       0
July 2005..........................................     92     71      20       0       0         160    160      20       0
July 2006..........................................     91     71      18       0       0         171    171      18       0
July 2007..........................................     91     68      15       0       0         183    183      15       0
July 2008..........................................     91     64      13       0       0         196    196      13       0
July 2009..........................................     90     59      10       0       0         210    210      10       0
July 2010..........................................     90     53       7       0       0         224    224       7       0
July 2011..........................................     89     46       5       0       0         240    240       5       0
July 2012..........................................     89     39       2       0       0         257    257       2       0
July 2013..........................................     88     33       *       0       0         274    274       *       0
July 2014..........................................     88     26       0       0       0         294    294       0       0
July 2015..........................................     87     19       0       0       0         314    314       0       0
July 2016..........................................     86     12       0       0       0         336    336       0       0
July 2017..........................................     86      5       0       0       0         359    359       0       0
July 2018..........................................     85      0       0       0       0         384    350       0       0
July 2019..........................................     84      0       0       0       0         411    172       0       0
July 2020..........................................     81      0       0       0       0         440      1       0       0
July 2021..........................................     68      0       0       0       0         470      0       0       0
July 2022..........................................     53      0       0       0       0         503      0       0       0
July 2023..........................................     37      0       0       0       0         538      0       0       0
July 2024..........................................     21      0       0       0       0         576      0       0       0
July 2025..........................................      2      0       0       0       0         616      0       0       0
July 2026..........................................      0      0       0       0       0          98      0       0       0
July 2027..........................................      0      0       0       0       0           0      0       0       0
July 2028..........................................      0      0       0       0       0           0      0       0       0
Weighted average life
  (in years)(1):...................................   22.0    10.8    4.4     2.6     2.2        27.7    20.9    4.4     2.0
 
<CAPTION>
 
DISTRIBUTION DATE                                    500%
- ---------------------------------------------------  ----
<S>                                                   <C>
Initial Percentage.................................  100
July 1999..........................................   90
July 2000..........................................    0
July 2001..........................................    0
July 2002..........................................    0
July 2003..........................................    0
July 2004..........................................    0
July 2005..........................................    0
July 2006..........................................    0
July 2007..........................................    0
July 2008..........................................    0
July 2009..........................................    0
July 2010..........................................    0
July 2011..........................................    0
July 2012..........................................    0
July 2013..........................................    0
July 2014..........................................    0
July 2015..........................................    0
July 2016..........................................    0
July 2017..........................................    0
July 2018..........................................    0
July 2019..........................................    0
July 2020..........................................    0
July 2021..........................................    0
July 2022..........................................    0
July 2023..........................................    0
July 2024..........................................    0
July 2025..........................................    0
July 2026..........................................    0
July 2027..........................................    0
July 2028..........................................    0
Weighted average life
  (in years)(1):...................................  1.7
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A1-29

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 1 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                       CLASS 1-M, CLASS 1-B1
                                                                         CLASS 1-R AND 1-RL               AND CLASS 1-B2
                                                                  --------------------------------   -------------------------
                                                                       PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION
                                                                  --------------------------------   -------------------------
DISTRIBUTION DATE                                                  0%    100%   250%   400%   500%    0%    100%   250%   275%
- ----------------------------------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                                               <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage..............................................   100   100    100    100    100     100   100    100    100
July 1999.......................................................     0     0      0      0      0      99    99     99     99
July 2000.......................................................     0     0      0      0      0      98    98     98     98
July 2001.......................................................     0     0      0      0      0      97    97     97     97
July 2002.......................................................     0     0      0      0      0      96    96     96     96
July 2003.......................................................     0     0      0      0      0      94    94     94     94
July 2004.......................................................     0     0      0      0      0      93    91     89     88
July 2005.......................................................     0     0      0      0      0      92    88     82     81
July 2006.......................................................     0     0      0      0      0      90    83     73     71
July 2007.......................................................     0     0      0      0      0      88    77     63     60
July 2008.......................................................     0     0      0      0      0      86    71     52     49
July 2009.......................................................     0     0      0      0      0      84    65     43     40
July 2010.......................................................     0     0      0      0      0      82    60     36     33
July 2011.......................................................     0     0      0      0      0      80    55     30     27
July 2012.......................................................     0     0      0      0      0      77    50     24     22
July 2013.......................................................     0     0      0      0      0      75    45     20     17
July 2014.......................................................     0     0      0      0      0      72    41     16     14
July 2015.......................................................     0     0      0      0      0      69    37     13     11
July 2016.......................................................     0     0      0      0      0      65    33     11      9
July 2017.......................................................     0     0      0      0      0      62    29      9      7
July 2018.......................................................     0     0      0      0      0      58    26      7      5
July 2019.......................................................     0     0      0      0      0      54    22      5      4
July 2020.......................................................     0     0      0      0      0      49    19      4      3
July 2021.......................................................     0     0      0      0      0      44    16      3      2
July 2022.......................................................     0     0      0      0      0      39    14      2      2
July 2023.......................................................     0     0      0      0      0      34    11      2      1
July 2024.......................................................     0     0      0      0      0      28     8      1      1
July 2025.......................................................     0     0      0      0      0      21     6      1      1
July 2026.......................................................     0     0      0      0      0      14     4      *      *
July 2027.......................................................     0     0      0      0      0       7     2      *      *
July 2028.......................................................     0     0      0      0      0       0     0      0      0
Weighted Average Life
  (in years)(1).................................................   0.1   0.1    0.1    0.1    0.1    20.0   14.9   11.2   10.9
 
<CAPTION>
 
DISTRIBUTION DATE                                                 400%   500%
- ----------------------------------------------------------------  ----   ----
<S>                                                               <C>    <C>
Initial Percentage..............................................  100    100
July 1999.......................................................   99     99
July 2000.......................................................   98     98
July 2001.......................................................   97     97
July 2002.......................................................   96     96
July 2003.......................................................   94     94
July 2004.......................................................   86     84
July 2005.......................................................   76     71
July 2006.......................................................   63     57
July 2007.......................................................   50     42
July 2008.......................................................   37     29
July 2009.......................................................   27     20
July 2010.......................................................   20     13
July 2011.......................................................   15      9
July 2012.......................................................   11      6
July 2013.......................................................    8      4
July 2014.......................................................    6      3
July 2015.......................................................    4      2
July 2016.......................................................    3      1
July 2017.......................................................    2      1
July 2018.......................................................    2      1
July 2019.......................................................    1      *
July 2020.......................................................    1      *
July 2021.......................................................    1      *
July 2022.......................................................    *      *
July 2023.......................................................    *      *
July 2024.......................................................    *      *
July 2025.......................................................    *      *
July 2026.......................................................    *      *
July 2027.......................................................    *      *
July 2028.......................................................    0      0
Weighted Average Life
  (in years)(1).................................................  9.5    8.8
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A1-30

<PAGE>

                                   APPENDIX A

                        POOL 1 SCHEDULED BALANCES TABLE
 
     The Aggregate Pool 1 PAC Balances for the Pool 1 PAC Certificates, the
Aggregate Pool 1 Scheduled Balances for the Pool 1 Scheduled Certificates and
the Class 1-A13 Scheduled Balances for the Class 1-A13 Certificates set forth in
the table below were calculated on the basis of the Class Certificate Principal
Balances of each such Certificates set forth on the cover hereof and the other
assumptions described in 'Pool 1 Annex--The Pool 1 Mortgage Loans and the Pool 1
Certificates--Distributions on the Pool 1 Certificates--Weighted Average Lives
of the Pool 1 Certificates--Pool 1 Scheduled Certificates' and '--Pool 1 PAC
Certificates' herein. If such Class Certificate Principal Balances are increased
or decreased in accordance with the variance permitted hereby, the applicable
balances set forth in the table below will be increased or decreased
substantially correspondingly. In such event, the final Pool 1 Scheduled
Balances Table will be calculated on or about the Closing Date on the basis of
such revised aggregate Class Certificate Principal Balances and on the basis of
(1) the Pool 1 PAC Structuring Range of the Pool 1 PAC Certificates, the
structuring range for Class 1-A13 Certificates and the Pool 1 Scheduled
Certificates and (2) the assumptions set forth in clauses (i), (iv) through
(viii), (x) and (xi) of the Pool 1 Modeling Assumptions. The final Pool 1
Scheduled Balances Table will be set forth in the Agreement, which will be filed
as an exhibit to the Detailed Description.
 
<TABLE>
<CAPTION>
                                               AGGREGATE POOL      CLASS 1-A13
                            AGGREGATE POOL       1 SCHEDULED        SCHEDULED
DISTRIBUTION DATE            1 PAC BALANCE         BALANCE           BALANCE
- -------------------------   ---------------    ---------------    --------------
<S>                         <C>                <C>                <C>
Initial Balance..........   $183,667,000.00    $114,095,797.00    $20,199,000.00
August 1998..............    183,667,000.00     113,658,233.75     20,121,535.80
September 1998...........    183,667,000.00     113,117,802.69     20,025,860.34
October 1998.............    183,667,000.00     112,474,717.64     19,912,011.50
November 1998............    183,667,000.00     111,729,221.07     19,780,032.18
December 1998............    183,667,000.00     110,881,660.30     19,629,983.88
January 1999.............    183,667,000.00     109,932,487.59     19,461,946.67
February 1999............    183,667,000.00     108,882,260.14     19,276,019.19
March 1999...............    183,667,000.00     107,731,639.85     19,072,318.62
April 1999...............    183,667,000.00     106,481,392.89     18,850,980.59
May 1999.................    183,667,000.00     105,132,389.17     18,612,159.12
June 1999................    183,667,000.00     103,685,601.53     18,356,026.43
July 1999................    183,667,000.00     102,142,104.82     18,082,772.81
August 1999..............    183,667,000.00     100,503,074.75     17,792,606.39
September 1999...........    183,667,000.00      98,769,786.67     17,485,752.97
October 1999.............    183,667,000.00      96,943,614.00     17,162,455.68
November 1999............    183,667,000.00      95,026,026.63     16,822,974.75
December 1999............    183,667,000.00      93,018,589.10     16,467,587.16
January 2000.............    183,667,000.00      90,922,958.59     16,096,586.28
February 2000............    183,667,000.00      88,740,882.78     15,710,281.52
March 2000...............    183,667,000.00      86,474,197.50     15,308,997.89
April 2000...............    183,667,000.00      84,124,824.27     14,893,075.56
May 2000.................    183,667,000.00      81,694,767.66     14,462,869.41
June 2000................    183,667,000.00      79,186,112.52     14,018,748.53
July 2000................    183,667,000.00      76,601,020.99     13,561,095.71
August 2000..............    183,667,000.00      73,941,729.50     13,090,306.86
September 2000...........    183,667,000.00      71,210,545.52     12,606,790.49
October 2000.............    183,667,000.00      68,409,844.24     12,110,967.10
November 2000............    183,667,000.00      65,542,065.12     11,603,268.55
December 2000............    183,667,000.00      62,618,897.76     11,085,764.32
January 2001.............    181,490,313.85      61,380,094.49     10,866,452.24
February 2001............    179,324,660.70      60,164,800.42     10,651,302.11
March 2001...............    177,169,984.50      58,972,716.60     10,440,261.03
</TABLE>
 
                                     A1-31
<PAGE>

<TABLE>
<CAPTION>
                                               AGGREGATE POOL      CLASS 1-A13
                            AGGREGATE POOL       1 SCHEDULED        SCHEDULED
DISTRIBUTION DATE            1 PAC BALANCE         BALANCE           BALANCE
- -------------------------   ---------------    ---------------    --------------
<S>                         <C>                <C>                <C>
April 2001...............   $175,026,229.50    $ 57,803,547.49    $10,233,276.65
May 2001.................    172,893,340.26      56,657,000.95     10,030,297.28
June 2001................    170,771,261.59      55,532,788.18      9,831,271.77
July 2001................    168,659,938.63      54,430,623.70      9,636,149.60
August 2001..............    166,559,316.79      53,350,225.29      9,444,880.78
September 2001...........    164,469,341.76      52,291,313.99      9,257,415.95
October 2001.............    162,389,959.54      51,253,614.04      9,073,706.28
November 2001............    160,321,116.39      50,236,852.85      8,893,703.51
December 2001............    158,262,758.86      49,240,760.94      8,717,359.94
January 2002.............    156,214,833.78      48,265,071.97      8,544,628.41
February 2002............    154,177,288.27      47,309,522.64      8,375,462.31
March 2002...............    152,150,069.72      46,373,852.69      8,209,815.57
April 2002...............    150,133,125.80      45,457,804.86      8,047,642.63
May 2002.................    148,126,404.45      44,561,124.85      7,888,898.49
June 2002................    146,129,853.88      43,683,561.29      7,733,538.64
July 2002................    144,143,422.59      42,824,865.73      7,581,519.09
August 2002..............    142,167,059.34      41,984,792.58      7,432,796.37
September 2002...........    140,200,713.17      41,163,099.07      7,287,327.49
October 2002.............    138,244,333.37      40,359,545.26      7,145,069.99
November 2002............    136,297,869.51      39,573,893.97      7,005,981.86
December 2002............    134,361,271.43      38,805,910.77      6,870,021.62
January 2003.............    132,434,489.23      38,055,363.95      6,737,148.23
February 2003............    130,517,473.26      37,322,024.47      6,607,321.15
March 2003...............    128,610,174.17      36,605,665.97      6,480,500.30
April 2003...............    126,712,542.83      35,906,064.68      6,356,646.08
May 2003.................    124,824,530.38      35,222,999.46      6,235,719.32
June 2003................    122,946,088.24      34,556,251.71      6,117,681.34
July 2003................    121,077,168.07      33,905,605.40      6,002,493.88
August 2003..............    119,241,043.28      33,289,616.13      5,893,441.95
September 2003...........    117,414,253.14      32,689,170.55      5,787,141.80
October 2003.............    115,596,749.75      32,104,060.31      5,683,556.55
November 2003............    113,788,485.45      31,534,079.46      5,582,649.74
December 2003............    111,989,412.85      30,979,024.47      5,484,385.33
January 2004.............    110,199,484.78      30,438,694.18      5,388,727.72
February 2004............    108,418,654.32      29,912,889.78      5,295,641.70
March 2004...............    106,646,874.82      29,401,414.76      5,205,092.50
April 2004...............    104,884,099.83      28,904,074.94      5,117,045.72
May 2004.................    103,130,283.19      28,420,678.39      5,031,467.40
June 2004................    101,385,378.93      27,951,035.41      4,948,323.94
July 2004................     99,649,341.36      27,494,958.56      4,867,582.18
August 2004..............     97,929,643.48      27,058,084.34      4,790,239.96
September 2004...........     96,218,675.02      26,634,327.86      4,715,220.04
October 2004.............     94,516,390.99      26,223,508.74      4,642,490.49
November 2004............     92,822,746.62      25,825,448.66      4,572,019.75
December 2004............     91,137,697.37      25,439,971.45      4,503,776.62
January 2005.............     89,461,198.96      25,066,902.98      4,437,730.28
February 2005............     87,793,207.31      24,706,071.18      4,373,850.26
March 2005...............     86,133,678.58      24,357,306.02      4,312,106.47
April 2005...............     84,482,569.15      24,020,439.46      4,252,469.15
May 2005.................     82,839,835.64      23,695,305.45      4,194,908.90
June 2005................     81,205,434.89      23,381,739.89      4,139,396.69
</TABLE>
 
                                     A1-32
<PAGE>
<TABLE>
<CAPTION>
                                               AGGREGATE POOL      CLASS 1-A13
                            AGGREGATE POOL       1 SCHEDULED        SCHEDULED
DISTRIBUTION DATE            1 PAC BALANCE         BALANCE           BALANCE
- -------------------------   ---------------    ---------------    --------------
<S>                         <C>                <C>                <C>
July 2005................   $ 79,579,323.96    $ 23,079,580.65    $ 4,085,903.79
August 2005..............     77,975,893.48      22,799,270.10      4,036,278.89
September 2005...........     76,380,552.47      22,531,518.96      3,988,877.45
October 2005.............     74,793,258.88      22,279,121.45      3,944,194.14
November 2005............     73,213,970.89      22,041,808.36      3,902,181.31
December 2005............     71,642,646.88      21,819,314.48      3,862,792.01
January 2006.............     70,079,245.48      21,611,378.48      3,825,979.97
February 2006............     68,525,252.49      21,416,583.91      3,791,494.43
March 2006...............     67,004,154.00      21,216,819.79      3,756,129.10
April 2006...............     65,515,274.96      21,012,317.70      3,719,924.98
May 2006.................     64,057,953.88      20,803,302.78      3,682,921.93
June 2006................     62,631,542.61      20,589,993.88      3,645,158.69
July 2006................     61,235,406.03      20,372,603.71      3,606,672.93
August 2006..............     59,910,205.09      20,143,817.25      3,566,169.62
September 2006...........     58,612,795.72      19,911,784.72      3,525,091.63
October 2006.............     57,342,607.57      19,676,688.42      3,483,471.26
November 2006............     56,099,081.85      19,438,705.39      3,441,339.83
December 2006............     54,881,671.02      19,198,007.48      3,398,727.76
January 2007.............     53,689,838.65      18,954,761.51      3,355,664.61
February 2007............     52,523,059.14      18,709,129.40      3,312,179.02
March 2007...............     51,380,817.53      18,461,268.26      3,268,298.81
April 2007...............     50,262,609.30      18,211,330.52      3,224,050.97
May 2007.................     49,167,940.12      17,959,464.04      3,179,461.68
June 2007................     48,096,325.67      17,705,812.25      3,134,556.32
July 2007................     47,047,291.45      17,450,514.21      3,089,359.52
August 2007..............     46,053,912.49      17,188,756.65      3,043,019.15
September 2007...........     45,080,906.44      16,926,029.35      2,996,507.11
October 2007.............     44,127,862.92      16,662,442.70      2,949,842.93
November 2007............     43,194,379.71      16,398,103.63      2,903,045.55
December 2007............     42,280,062.61      16,133,115.72      2,856,133.29
January 2008.............     41,384,525.28      15,867,579.25      2,809,123.93
February 2008............     40,507,389.05      15,601,591.30      2,762,034.63
March 2008...............     39,648,282.81      15,335,245.83      2,714,882.04
April 2008...............     38,806,842.85      15,068,633.78      2,667,682.26
May 2008.................     37,982,712.71      14,801,843.07      2,620,450.85
June 2008................     37,175,543.03      14,534,958.77      2,573,202.87
July 2008................     36,384,991.42      14,268,063.11      2,525,952.88
August 2008..............     35,610,722.30      14,001,235.58      2,478,714.95
September 2008...........     34,852,406.81      13,734,552.97      2,431,502.67
October 2008.............     34,109,722.64      13,468,089.47      2,384,329.19
November 2008............     33,382,353.90      13,201,916.74      2,337,207.18
December 2008............     32,669,991.02      12,936,103.92      2,290,148.89
January 2009.............     31,972,330.59      12,670,717.77      2,243,166.14
February 2009............     31,289,075.27      12,405,822.66      2,196,270.31
March 2009...............     30,619,933.66      12,141,480.70      2,149,472.42
April 2009...............     29,964,620.16      11,877,751.74      2,102,783.04
May 2009.................     29,322,854.89      11,614,693.44      2,056,212.40
June 2009................     28,694,363.56      11,352,361.37      2,009,770.33
July 2009................     28,078,877.35      11,090,809.02      1,963,466.29
August 2009..............     27,476,132.82      10,830,087.85      1,917,309.40
September 2009...........     26,885,871.79      10,570,247.38      1,871,308.43
</TABLE>
 
                                     A1-33
<PAGE>

<TABLE>
<CAPTION>
                                               AGGREGATE POOL      CLASS 1-A13
                            AGGREGATE POOL       1 SCHEDULED        SCHEDULED
DISTRIBUTION DATE            1 PAC BALANCE         BALANCE           BALANCE
- -------------------------   ---------------    ---------------    --------------
<S>                         <C>                <C>                <C>
October 2009.............   $ 26,307,841.24    $ 10,311,335.22    $ 1,825,471.80
November 2009............     25,741,793.22      10,053,397.11      1,779,807.61
December 2009............     25,187,484.72       9,796,476.99      1,734,323.65
January 2010.............     24,644,677.61       9,540,617.03      1,689,027.36
February 2010............     24,113,138.51       9,285,857.69      1,643,925.93
March 2010...............     23,592,638.70       9,032,237.78      1,599,026.22
April 2010...............     23,082,954.07       8,779,794.45      1,554,334.80
May 2010.................     22,583,864.95       8,528,563.29      1,509,857.98
June 2010................     22,095,156.11       8,278,578.36      1,465,601.79
July 2010................     21,616,616.61       8,029,872.21      1,421,571.99
August 2010..............     21,148,039.74       7,782,475.94      1,377,774.08
September 2010...........     20,689,222.91       7,536,419.23      1,334,213.32
October 2010.............     20,239,967.62       7,291,730.40      1,290,894.72
November 2010............     19,800,079.32       7,048,436.42      1,247,823.07
December 2010............     19,369,367.39       6,806,562.94      1,205,002.89
January 2011.............     18,947,644.99       6,566,134.39      1,162,438.51
February 2011............     18,534,729.07       6,327,173.92      1,120,134.04
March 2011...............     18,130,440.22       6,089,703.52      1,078,093.36
April 2011...............     17,734,602.63       5,853,744.01      1,036,320.17
May 2011.................     17,347,044.04       5,619,315.07        994,817.94
June 2011................     16,967,595.63       5,386,435.30        953,589.96
July 2011................     16,596,091.96       5,155,122.21        912,639.35
August 2011..............     16,232,370.93       4,925,392.31        871,969.01
September 2011...........     15,876,273.69       4,697,261.07        831,581.70
October 2011.............     15,527,644.57       4,470,743.01        791,479.97
November 2011............     15,186,331.03       4,245,851.69        751,666.24
December 2011............     14,852,183.60       4,022,599.74        712,142.73
January 2012.............     14,525,055.82       3,800,998.93        672,911.53
February 2012............     14,204,804.15       3,581,060.14        633,974.57
March 2012...............     13,891,287.97       3,362,793.41        595,333.62
April 2012...............     13,584,369.46       3,146,207.96        556,990.32
May 2012.................     13,283,913.58       2,931,312.24        518,946.16
June 2012................     12,989,788.02       2,718,113.92        481,202.50
July 2012................     12,701,863.10       2,506,619.93        443,760.57
August 2012..............     12,420,011.79       2,296,836.47        406,621.46
September 2012...........     12,144,109.58       2,088,769.05        369,786.15
October 2012.............     11,874,034.50       1,882,422.51        333,255.50
November 2012............     11,609,667.02       1,677,801.03        297,030.25
December 2012............     11,350,890.02       1,474,908.14        261,111.02
January 2013.............     11,097,588.73       1,273,746.78        225,498.33
February 2013............     10,849,650.71       1,074,319.28        190,192.59
March 2013...............     10,606,965.79         876,627.40        155,194.12
April 2013...............     10,369,425.99         680,672.34        120,503.13
May 2013.................     10,136,925.55         486,454.76         86,119.73
June 2013................      9,909,360.81         293,974.81         52,043.96
July 2013................      9,686,630.23         103,232.11         18,275.74
August 2013..............      9,468,634.29               0.00              0.00
September 2013...........      9,255,275.50               0.00              0.00
October 2013.............      9,046,458.33               0.00              0.00
November 2013............      8,842,089.19               0.00              0.00
December 2013............      8,642,076.37               0.00              0.00
</TABLE>
 
                                     A1-34
<PAGE>

<TABLE>
<CAPTION>
                                               AGGREGATE POOL      CLASS 1-A13
                            AGGREGATE POOL       1 SCHEDULED        SCHEDULED
DISTRIBUTION DATE            1 PAC BALANCE         BALANCE           BALANCE
- -------------------------   ---------------    ---------------    --------------
<S>                         <C>                <C>                <C>
January 2014.............   $  8,446,330.01               0.00              0.00
February 2014............      8,254,762.09               0.00              0.00
March 2014...............      8,067,286.34               0.00              0.00
April 2014...............      7,883,818.25               0.00              0.00
May 2014.................      7,704,275.02               0.00              0.00
June 2014................      7,528,575.53               0.00              0.00
July 2014................      7,356,640.30               0.00              0.00
August 2014..............      7,188,391.44               0.00              0.00
September 2014...........      7,023,752.66               0.00              0.00
October 2014.............      6,862,649.22               0.00              0.00
November 2014............      6,705,007.86               0.00              0.00
December 2014............      6,550,756.85               0.00              0.00
January 2015.............      6,399,825.89               0.00              0.00
February 2015............      6,252,146.10               0.00              0.00
March 2015...............      6,107,650.01               0.00              0.00
April 2015...............      5,966,271.52               0.00              0.00
May 2015.................      5,827,945.86               0.00              0.00
June 2015................      5,692,609.58               0.00              0.00
July 2015................      5,560,200.53               0.00              0.00
August 2015..............      5,430,657.82               0.00              0.00
September 2015...........      5,303,921.78               0.00              0.00
October 2015.............      5,179,933.96               0.00              0.00
November 2015............      5,058,637.12               0.00              0.00
December 2015............      4,939,975.15               0.00              0.00
January 2016.............      4,823,893.11               0.00              0.00
February 2016............      4,710,337.17               0.00              0.00
March 2016...............      4,599,254.59               0.00              0.00
April 2016...............      4,490,593.71               0.00              0.00
May 2016.................      4,384,303.92               0.00              0.00
June 2016................      4,280,335.64               0.00              0.00
July 2016................      4,178,640.30               0.00              0.00
August 2016..............      4,079,170.33               0.00              0.00
September 2016...........      3,981,879.12               0.00              0.00
October 2016.............      3,886,721.02               0.00              0.00
November 2016............      3,793,651.30               0.00              0.00
December 2016............      3,702,626.16               0.00              0.00
January 2017.............      3,613,602.68               0.00              0.00
February 2017............      3,526,538.82               0.00              0.00
March 2017...............      3,441,393.40               0.00              0.00
April 2017...............      3,358,126.10               0.00              0.00
May 2017.................      3,276,697.39               0.00              0.00
June 2017................      3,197,068.57               0.00              0.00
July 2017................      3,119,201.74               0.00              0.00
August 2017..............      3,043,059.76               0.00              0.00
September 2017...........      2,968,606.26               0.00              0.00
October 2017.............      2,895,805.61               0.00              0.00
November 2017............      2,824,622.91               0.00              0.00
December 2017............      2,755,023.98               0.00              0.00
January 2018.............      2,686,975.34               0.00              0.00
February 2018............      2,620,444.20               0.00              0.00
March 2018...............      2,555,398.44               0.00              0.00
</TABLE>
 
                                     A1-35
<PAGE>

<TABLE>
<CAPTION>
                                               AGGREGATE POOL      CLASS 1-A13
                            AGGREGATE POOL       1 SCHEDULED        SCHEDULED
DISTRIBUTION DATE            1 PAC BALANCE         BALANCE           BALANCE
- -------------------------   ---------------    ---------------    --------------
<S>                         <C>                <C>                <C>
April 2018...............   $  2,491,806.60               0.00              0.00
May 2018.................      2,429,637.85               0.00              0.00
June 2018................      2,368,862.04               0.00              0.00
July 2018................      2,309,449.58               0.00              0.00
August 2018..............      2,251,371.54               0.00              0.00
September 2018...........      2,194,599.55               0.00              0.00
October 2018.............      2,139,105.85               0.00              0.00
November 2018............      2,084,863.23               0.00              0.00
December 2018............      2,031,845.05               0.00              0.00
January 2019.............      1,980,025.23               0.00              0.00
February 2019............      1,929,378.20               0.00              0.00
March 2019...............      1,879,878.96               0.00              0.00
April 2019...............      1,831,502.98               0.00              0.00
May 2019.................      1,784,226.26               0.00              0.00
June 2019................      1,738,025.30               0.00              0.00
July 2019................      1,692,877.07               0.00              0.00
August 2019..............      1,648,759.04               0.00              0.00
September 2019...........      1,605,649.11               0.00              0.00
October 2019.............      1,563,525.68               0.00              0.00
November 2019............      1,522,367.55               0.00              0.00
December 2019............      1,482,154.01               0.00              0.00
January 2020.............      1,442,864.74               0.00              0.00
February 2020............      1,404,479.85               0.00              0.00
March 2020...............      1,366,979.88               0.00              0.00
April 2020...............      1,330,345.75               0.00              0.00
May 2020.................      1,294,558.79               0.00              0.00
June 2020................      1,259,600.72               0.00              0.00
July 2020................      1,225,453.63               0.00              0.00
August 2020..............      1,192,099.99               0.00              0.00
September 2020...........      1,159,522.62               0.00              0.00
October 2020.............      1,127,704.72               0.00              0.00
November 2020............      1,096,629.83               0.00              0.00
December 2020............      1,066,281.82               0.00              0.00
January 2021.............      1,036,644.92               0.00              0.00
February 2021............      1,007,703.68               0.00              0.00
March 2021...............        979,442.95               0.00              0.00
April 2021...............        951,847.93               0.00              0.00
May 2021.................        924,904.10               0.00              0.00
June 2021................        898,597.27               0.00              0.00
July 2021................        872,913.54               0.00              0.00
August 2021..............        847,839.28               0.00              0.00
September 2021...........        823,361.16               0.00              0.00
October 2021.............        799,466.13               0.00              0.00
November 2021............        776,141.42               0.00              0.00
December 2021............        753,374.52               0.00              0.00
January 2022.............        731,153.18               0.00              0.00
February 2022............        709,465.40               0.00              0.00
March 2022...............        688,299.45               0.00              0.00
April 2022...............        667,643.84               0.00              0.00
May 2022.................        647,487.32               0.00              0.00
June 2022................        627,818.86               0.00              0.00
</TABLE>
 
                                     A1-36
<PAGE>

<TABLE>
<CAPTION>
                                               AGGREGATE POOL      CLASS 1-A13
                            AGGREGATE POOL       1 SCHEDULED        SCHEDULED
DISTRIBUTION DATE            1 PAC BALANCE         BALANCE           BALANCE
- -------------------------   ---------------    ---------------    --------------
<S>                         <C>                <C>                <C>
July 2022................   $    608,627.70               0.00              0.00
August 2022..............        589,903.27               0.00              0.00
September 2022...........        571,635.24               0.00              0.00
October 2022.............        553,813.50               0.00              0.00
November 2022............        536,428.14               0.00              0.00
December 2022............        519,469.48               0.00              0.00
January 2023.............        502,928.01               0.00              0.00
February 2023............        486,794.47               0.00              0.00
March 2023...............        471,059.75               0.00              0.00
April 2023...............        455,714.95               0.00              0.00
May 2023.................        440,751.38               0.00              0.00
June 2023................        426,160.49               0.00              0.00
July 2023................        411,933.95               0.00              0.00
August 2023..............        398,063.58               0.00              0.00
September 2023...........        384,541.40               0.00              0.00
October 2023.............        371,359.58               0.00              0.00
November 2023............        358,510.45               0.00              0.00
December 2023............        345,986.53               0.00              0.00
January 2024.............        333,780.48               0.00              0.00
February 2024............        321,885.11               0.00              0.00
March 2024...............        310,293.41               0.00              0.00
April 2024...............        298,998.49               0.00              0.00
May 2024.................        287,993.63               0.00              0.00
June 2024................        277,272.23               0.00              0.00
July 2024................        266,827.86               0.00              0.00
August 2024..............        256,654.20               0.00              0.00
September 2024...........        246,745.08               0.00              0.00
October 2024.............        237,094.47               0.00              0.00
November 2024............        227,696.45               0.00              0.00
December 2024............        218,545.23               0.00              0.00
January 2025.............        209,635.17               0.00              0.00
February 2025............        200,960.71               0.00              0.00
March 2025...............        192,516.44               0.00              0.00
April 2025...............        184,297.06               0.00              0.00
May 2025.................        176,297.38               0.00              0.00
June 2025................        168,512.32               0.00              0.00
July 2025................        160,936.92               0.00              0.00
August 2025..............        153,566.32               0.00              0.00
September 2025...........        146,395.75               0.00              0.00
October 2025.............        139,420.58               0.00              0.00
November 2025............        132,636.25               0.00              0.00
December 2025............        126,038.30               0.00              0.00
January 2026.............        119,622.39               0.00              0.00
February 2026............        113,384.24               0.00              0.00
March 2026...............        107,319.69               0.00              0.00
April 2026...............        101,424.67               0.00              0.00
May 2026.................         95,695.18               0.00              0.00
June 2026................         90,127.31               0.00              0.00
July 2026................         84,717.27               0.00              0.00
August 2026..............         79,461.29               0.00              0.00
September 2026...........         74,355.75               0.00              0.00
</TABLE>
 
                                     A1-37
<PAGE>

<TABLE>
<CAPTION>
                                               AGGREGATE POOL      CLASS 1-A13
                            AGGREGATE POOL       1 SCHEDULED        SCHEDULED
DISTRIBUTION DATE            1 PAC BALANCE         BALANCE           BALANCE
- -------------------------   ---------------    ---------------    --------------
<S>                         <C>                <C>                <C>
October 2026.............   $     69,397.06               0.00              0.00
November 2026............         64,581.73               0.00              0.00
December 2026............         59,906.33               0.00              0.00
January 2027.............         55,367.54               0.00              0.00
February 2027............         50,962.07               0.00              0.00
March 2027...............         46,686.73               0.00              0.00
April 2027...............         42,538.39               0.00              0.00
May 2027.................         38,514.00               0.00              0.00
June 2027................         34,610.55               0.00              0.00
July 2027................         30,825.14               0.00              0.00
August 2027..............         27,154.89               0.00              0.00
September 2027...........         23,597.00               0.00              0.00
October 2027.............         20,148.75               0.00              0.00
November 2027............         16,807.46               0.00              0.00
December 2027............         13,570.51               0.00              0.00
January 2028.............         10,435.34               0.00              0.00
February 2028............          7,399.45               0.00              0.00
March 2028...............          4,460.40               0.00              0.00
April 2028...............          1,615.80               0.00              0.00
May 2028.................              0.00               0.00              0.00
</TABLE>
 
                                     A1-38
<PAGE>

                                   APPENDIX B

                           POOL 1 TAC BALANCES TABLE
 
     The Aggregate Pool 1 TAC Balances set forth in the table below were
calculated on the basis of the aggregate Class Certificate Principal Balances of
the Pool 1 TAC Certificates set forth on the cover hereof, the assumptions
described in 'Pool 1 Annex--The Pool 1 Mortgage Loans and the Pool 1
Certificates-- Distributions on the Pool 1 Certificates--Weighted Average Lives
of the Pool 1 Certificates--Pool 1 TAC Certificates' in this Pool 1 Annex, and a
constant prepayment rate of 250% of the Prepayment Assumption (the 'Pool 1 TAC
Prepayment Assumption'). If such aggregate Class Certificate Principal Balances
are increased or decreased in accordance with the variance permitted hereby the
applicable balances set forth in the table below will be increased or decreased
substantially correspondingly. In such event, the final Aggregate Pool 1 TAC
Balances Table will be calculated on or about the Closing Date on the basis of
(1) such revised aggregate Class Certificate Principal Balances, (2) the actual
characteristics of the Pool 1 Mortgage Loans, (3) the Pool 1 TAC Prepayment
Assumption and (4) the assumptions set forth in clauses (i), (iv) through
(viii), (x) and (xi) of the Pool 1 Modeling Assumptions. The final Aggregate
Pool 1 TAC Balances Table will be set forth in the Agreement, which will be
filed as an exhibit to the Detailed Description.
 
<TABLE>
<CAPTION>
                            AGGREGATE POOL 1
DISTRIBUTION DATE             TAC BALANCES
- -------------------------   ----------------
<S>                         <C>
Initial Balance..........    $ 48,106,498.00
August 1998..............      47,949,939.79
September 1998...........      47,752,593.02
October 1998.............      47,514,527.33
November 1998............      47,235,839.89
December 1998............      46,916,679.75
January 1999.............      46,557,247.93
February 1999............      46,157,797.48
March 1999...............      45,718,633.37
April 1999...............      45,240,112.28
May 1999.................      44,722,642.30
June 1999................      44,166,682.50
July 1999................      43,572,742.40
August 1999..............      42,941,381.31
September 1999...........      42,273,207.59
October 1999.............      41,568,877.78
November 1999............      40,829,095.63
December 1999............      40,054,610.98
January 2000.............      39,246,218.64
February 2000............      38,404,757.05
March 2000...............      37,531,106.91
April 2000...............      36,626,189.70
May 2000.................      35,690,966.07
June 2000................      34,726,434.23
July 2000................      33,733,628.12
August 2000..............      32,713,615.62
September 2000...........      31,667,496.64
October 2000.............      30,596,401.09
November 2000............      29,501,486.84
December 2000............      28,387,548.21
January 2001.............      27,813,730.76
February 2001............      27,252,612.00
March 2001...............      26,703,995.32
April 2001...............      26,167,686.85
May 2001.................      25,643,495.50
</TABLE>
 
                                     A1-39
<PAGE>

<TABLE>
<CAPTION>
                            AGGREGATE POOL 1
DISTRIBUTION DATE             TAC BALANCES
- -------------------------   ----------------
<S>                         <C>
June 2001................    $ 25,131,232.89
July 2001................      24,630,713.30
August 2001..............      24,141,753.64
September 2001...........      23,664,173.45
October 2001.............      23,197,794.81
November 2001............      22,742,442.34
December 2001............      22,297,943.15
January 2002.............      21,864,126.81
February 2002............      21,440,825.32
March 2002...............      21,027,873.08
April 2002...............      20,625,106.84
May 2002.................      20,232,365.67
June 2002................      19,849,490.95
July 2002................      19,476,326.32
August 2002..............      19,112,717.66
September 2002...........      18,758,513.04
October 2002.............      18,413,562.71
November 2002............      18,077,719.05
December 2002............      17,750,836.57
January 2003.............      17,432,771.85
February 2003............      17,123,383.53
March 2003...............      16,822,532.27
April 2003...............      16,530,080.74
May 2003.................      16,245,893.57
June 2003................      15,969,837.34
July 2003................      15,701,780.53
August 2003..............      15,450,673.38
September 2003...........      15,207,236.11
October 2003.............      14,971,343.02
November 2003............      14,742,870.20
December 2003............      14,521,695.55
January 2004.............      14,307,698.72
February 2004............      14,100,761.10
March 2004...............      13,900,765.80
April 2004...............      13,707,597.61
May 2004.................      13,521,142.99
June 2004................      13,341,290.05
July 2004................      13,167,928.49
August 2004..............      13,003,736.81
September 2004...........      12,845,776.77
October 2004.............      12,693,943.17
November 2004............      12,548,132.38
December 2004............      12,408,242.24
January 2005.............      12,274,172.11
February 2005............      12,145,822.78
March 2005...............      12,023,096.52
April 2005...............      11,905,897.02
May 2005.................      11,794,129.36
June 2005................      11,687,700.02
July 2005................      11,586,516.85
August 2005..............      11,495,493.17
September 2005...........      11,409,425.07
</TABLE>
 
                                     A1-40
<PAGE>

<TABLE>
<CAPTION>
                            AGGREGATE POOL 1
DISTRIBUTION DATE             TAC BALANCES
- -------------------------   ----------------
<S>                         <C>
October 2005.............    $ 11,328,225.79
November 2005............      11,251,809.81
December 2005............      11,180,092.88
January 2006.............      11,112,992.01
February 2006............      11,050,057.45
March 2006...............      10,985,538.94
April 2006...............      10,919,509.99
May 2006.................      10,852,042.03
June 2006................      10,783,204.51
July 2006................      10,713,064.94
August 2006..............      10,639,300.77
September 2006...........      10,564,499.66
October 2006.............      10,488,719.44
November 2006............      10,412,016.28
December 2006............      10,334,444.73
January 2007.............      10,256,057.70
February 2007............      10,176,906.56
March 2007...............      10,097,041.17
April 2007...............      10,016,509.87
May 2007.................       9,935,359.60
June 2007................       9,853,635.83
July 2007................       9,771,382.69
August 2007..............       9,687,071.93
September 2007...........       9,602,446.51
October 2007.............       9,517,541.44
November 2007............       9,432,390.64
December 2007............       9,347,026.95
January 2008.............       9,261,482.17
February 2008............       9,175,787.08
March 2008...............       9,089,971.49
April 2008...............       9,004,064.22
May 2008.................       8,918,093.14
June 2008................       8,832,085.24
July 2008................       8,746,066.57
August 2008..............       8,660,062.33
September 2008...........       8,574,096.86
October 2008.............       8,488,193.68
November 2008............       8,402,375.50
December 2008............       8,316,664.24
January 2009.............       8,231,081.03
February 2009............       8,145,646.28
March 2009...............       8,060,379.68
April 2009...............       7,975,300.16
May 2009.................       7,890,426.02
June 2009................       7,805,774.84
July 2009................       7,721,363.55
August 2009..............       7,637,208.47
September 2009...........       7,553,325.27
October 2009.............       7,469,729.02
November 2009............       7,386,434.20
December 2009............       7,303,454.71
January 2010.............       7,220,803.90
</TABLE>
 
                                     A1-41
<PAGE>

<TABLE>
<CAPTION>
                            AGGREGATE POOL 1
DISTRIBUTION DATE             TAC BALANCES
- -------------------------   ----------------
<S>                         <C>
February 2010............    $  7,138,494.58
March 2010...............       7,056,539.02
April 2010...............       6,974,948.96
May 2010.................       6,893,735.67
June 2010................       6,812,909.91
July 2010................       6,732,481.98
August 2010..............       6,652,461.69
September 2010...........       6,572,858.43
October 2010.............       6,493,681.14
November 2010............       6,414,938.34
December 2010............       6,336,638.13
January 2011.............       6,258,788.20
February 2011............       6,181,395.87
March 2011...............       6,104,468.08
April 2011...............       6,028,011.37
May 2011.................       5,952,031.96
June 2011................       5,876,535.69
July 2011................       5,801,528.09
August 2011..............       5,727,014.33
September 2011...........       5,652,999.29
October 2011.............       5,579,487.52
November 2011............       5,506,483.28
December 2011............       5,433,990.53
January 2012.............       5,362,012.96
February 2012............       5,290,553.96
March 2012...............       5,219,616.68
April 2012...............       5,149,203.99
May 2012.................       5,079,318.52
June 2012................       5,009,962.66
July 2012................       4,941,138.55
August 2012..............       4,872,848.11
September 2012...........       4,805,093.03
October 2012.............       4,737,874.80
November 2012............       4,671,194.69
December 2012............       4,605,053.78
January 2013.............       4,539,452.93
February 2013............       4,474,392.83
March 2013...............       4,409,873.99
April 2013...............       4,345,896.73
May 2013.................       4,282,461.21
June 2013................       4,219,567.42
July 2013................       4,157,215.18
August 2013..............       4,095,404.17
September 2013...........       4,034,133.92
October 2013.............       3,973,403.79
November 2013............       3,913,213.04
December 2013............       3,853,560.77
January 2014.............       3,794,445.95
February 2014............       3,735,867.43
March 2014...............       3,677,823.94
April 2014...............       3,620,314.09
May 2014.................       3,563,336.39
</TABLE>
 
                                     A1-42
<PAGE>

<TABLE>
<CAPTION>
                            AGGREGATE POOL 1
DISTRIBUTION DATE             TAC BALANCES
- -------------------------   ----------------
<S>                         <C>
June 2014................    $  3,506,889.21
July 2014................       3,450,970.85
August 2014..............       3,395,579.50
September 2014...........       3,340,713.24
October 2014.............       3,286,370.07
November 2014............       3,232,547.90
December 2014............       3,179,244.54
January 2015.............       3,126,457.75
February 2015............       3,074,185.17
March 2015...............       3,022,424.40
April 2015...............       2,971,172.95
May 2015.................       2,920,428.25
June 2015................       2,870,187.69
July 2015................       2,820,448.58
August 2015..............       2,771,208.17
September 2015...........       2,722,463.66
October 2015.............       2,674,212.18
November 2015............       2,626,450.82
December 2015............       2,579,176.61
January 2016.............       2,532,386.56
February 2016............       2,486,077.59
March 2016...............       2,440,246.60
April 2016...............       2,394,890.47
May 2016.................       2,350,006.00
June 2016................       2,305,589.99
July 2016................       2,261,639.19
August 2016..............       2,218,150.30
September 2016...........       2,175,120.03
October 2016.............       2,132,545.03
November 2016............       2,090,421.93
December 2016............       2,048,747.35
January 2017.............       2,007,517.86
February 2017............       1,966,730.03
March 2017...............       1,926,380.41
April 2017...............       1,886,465.52
May 2017.................       1,846,981.87
June 2017................       1,807,925.96
July 2017................       1,769,294.27
August 2017..............       1,731,083.26
September 2017...........       1,693,289.40
October 2017.............       1,655,909.12
November 2017............       1,618,938.88
December 2017............       1,582,375.11
January 2018.............       1,546,214.22
February 2018............       1,510,452.66
March 2018...............       1,475,086.82
April 2018...............       1,440,113.14
May 2018.................       1,405,528.03
June 2018................       1,371,327.89
July 2018................       1,337,509.15
August 2018..............       1,304,068.23
September 2018...........       1,271,001.53
</TABLE>
 
                                     A1-43
<PAGE>

<TABLE>
<CAPTION>
                            AGGREGATE POOL 1
DISTRIBUTION DATE             TAC BALANCES
- -------------------------   ----------------
<S>                         <C>
October 2018.............    $  1,238,305.49
November 2018............       1,205,976.54
December 2018............       1,174,011.10
January 2019.............       1,142,405.60
February 2019............       1,111,156.51
March 2019...............       1,080,260.26
April 2019...............       1,049,713.32
May 2019.................       1,019,512.16
June 2019................         989,653.25
July 2019................         960,133.08
August 2019..............         930,948.15
September 2019...........         902,094.96
October 2019.............         873,570.05
November 2019............         845,369.95
December 2019............         817,491.19
January 2020.............         789,930.35
February 2020............         762,683.99
March 2020...............         735,748.70
April 2020...............         709,121.09
May 2020.................         682,797.77
June 2020................         656,775.38
July 2020................         631,050.56
August 2020..............         605,619.99
September 2020...........         580,480.35
October 2020.............         555,628.32
November 2020............         531,060.64
December 2020............         506,774.04
January 2021.............         482,765.27
February 2021............         459,031.09
March 2021...............         435,568.30
April 2021...............         412,373.71
May 2021.................         389,444.15
June 2021................         366,776.45
July 2021................         344,367.48
August 2021..............         322,214.14
September 2021...........         300,313.32
October 2021.............         278,661.95
November 2021............         257,256.97
December 2021............         236,095.35
January 2022.............         215,174.07
February 2022............         194,490.14
March 2022...............         174,040.58
April 2022...............         153,822.45
May 2022.................         133,832.80
June 2022................         114,068.74
July 2022................          94,527.36
August 2022..............          75,205.80
September 2022...........          56,101.21
October 2022.............          37,210.76
November 2022............          18,531.65
December 2022............              61.76
January 2023.............               0.00
</TABLE>
 
                                     A1-44

<PAGE>

                                  POOL 2 ANNEX

                           THE POOL 2 MORTGAGE LOANS
                          AND THE POOL 2 CERTIFICATES
 
     Interest and principal will be distributable on the Pool 2 Certificates
solely out of the Pool 2 Available Funds received in respect of the Pool 2
Mortgage Loans. This Pool 2 Annex sets forth certain data with respect to the
Pool 2 Mortgage Loans, describes the manner in which interest and principal will
be distributable on the Pool 2 Certificates and discusses certain yield and
weighted average life considerations relevant to an investment in the Pool 2
Certificates.
 
THE POOL 2 MORTGAGE LOANS
 
     The Pool 2 Mortgage Loans will have an aggregate Scheduled Principal
Balance as of the Cut-off Date, after deducting payments of principal due on or
before such date, of approximately $200,222,314. This amount is subject to a
permitted variance such that the aggregate Scheduled Principal Balance thereof
will not be less than $190,000,000 or greater than $210,000,000.
 
     It is expected that at least 93% (by Scheduled Principal Balance as of the
Cut-off Date) of the Pool 2 Mortgage Loans (and substantially all of the Pool 2
Mortgage Loans with loan-to-value ratios in excess of 80%) will have been
originated under the Company's full or alternative documentation program or
other full or alternative documentation programs acceptable to the Company, that
no more than 6.50% (by Scheduled Principal Balance as of the Cut-off Date) of
the Pool 2 Mortgage Loans will have been originated under the Company's 'No
Income Verification Program' or other no income verification programs acceptable
to the Company, that no more than 1% of the Pool 2 Mortgage Loans will have been
originated under the Company's 'Enhanced Streamlined Refinance Program' or other
streamlined refinance programs acceptable to the Company, that none of the Pool
2 Mortgage Loans will have been originated under the Company's 'No Ratio
Program' or other no ratio programs acceptable to the Company, and that none of
the Pool 2 Mortgage Loans will have been originated under the Company's 'No
Income No Asset Verification Program' or other no income, no asset verification
programs acceptable to the Company. It is expected that no more than 1.5% (by
Scheduled Principal Balance as of the Cut-off Date) of the Pool 2 Mortgage Loans
will have been acquired under the Company's 'Relocation Loan' program or other
relocation programs acceptable to the Company. See 'The Trust Fund--The Mortgage
Loans--Loan Underwriting Policies' in the Prospectus.
 
     The Mortgage Rates borne by the Pool 2 Mortgage Loans are expected to range
from 6.375% to 8.750% per annum, and the weighted average Mortgage Rate as of
the Cut-off Date of such Mortgage Loans is expected to be between 7.44% and
7.48% per annum. The original principal balances of the Pool 2 Mortgage Loans
are expected to range from $60,000 to $1,100,000 and, as of the Cut-off Date,
the average Scheduled Principal Balance of such Mortgage Loans is not expected
to exceed $323,000 after application of payments due on or before the Cut-off
Date. It is expected that the month and year of the earliest origination date of
any Pool 2 Mortgage Loan will be June 1997, and the month and year of the latest
scheduled maturity date of any such Mortgage Loan will be June 2028. All of the
Pool 2 Mortgage Loans will have original terms to maturity of 20 to 30 years,
and it is expected that the weighted average scheduled remaining term to
maturity of such Mortgage Loans will be between 357 and 360 months as of the
Cut-off Date.
 
     The Pool 2 Mortgage Loans are expected to have the following additional
characteristics (by Scheduled Principal Balance of all the Pool 2 Mortgage
Loans) as of the Cut-off Date:
 
          It is expected that all of the Mortgaged Properties relating to the
     Pool 2 Mortgage Loans will be located in California. An occurrence of a
     natural disaster or adverse circumstance in the real estate market or
     economy of California is likely to have an adverse impact on payments in
     respect of the Mortgage Loans.
 
          No more than 10% of the Pool 2 Mortgage Loans will have a Scheduled
     Principal Balance of more than $500,000 and up to and including $750,000.
     No more than 3% of the Pool 2 Mortgage Loans will have a Scheduled
     Principal Balance of more than $750,000 and up to and including $1,000,000.
     No more than 1% of the Pool 2 Mortgage Loans will have a Scheduled
     Principal Balance of more than $1,000,000.
 
                                      A2-1
<PAGE>

          No more than 15% of such Mortgage Loans will have a loan-to-value
     ratio at origination in excess of 80%, no more than 5% of such Mortgage
     Loans will have a loan-to-value ratio at origination in excess of 90%, and
     none of such Mortgage Loans will have a loan-to-value ratio at origination
     in excess of 95%. As of the Cut-off Date, the weighted average
     loan-to-value ratio at origination of such Mortgage Loans is expected to be
     between 74% and 76%.
 
          No more than 1% of such Mortgage Loans will have a loan-to-value ratio
     at origination calculated based on an appraisal conducted more than one
     year before the origination date thereof.
 
          The proceeds of at least 41% of such Mortgage Loans will have been
     used to acquire the related Mortgaged Property. The proceeds of the
     remainder of such Mortgage Loans will have been used to refinance an
     existing loan. No more than 15% of such Mortgage Loans will have been the
     subject of 'cash-out' refinancings.
 
          No more than 1% of such Mortgage Loans will be temporary buy-down
     Mortgage Loans.
 
          No more than 2% of such Mortgage Loans will be secured by Mortgaged
     Properties located in any one postal zip code area.
 
          At least 96% of such Mortgage Loans will be secured by Mortgaged
     Properties determined by the Company to be the primary residence of the
     Mortgagor. The basis for such determination will be the making of a
     representation by the Mortgagor at origination that the underlying property
     will be used as the Mortgagor's primary residence.
 
          At least 90% of such Mortgage Loans will be secured by single-family,
     detached residences. No more than 8% of such Mortgage Loans will be secured
     by condominiums.
 
          None of such Mortgage Loans are Cooperative Loans (see 'The Trust
     Fund--The Mortgage Loans' in the Prospectus) secured by shares of stock in
     cooperative housing corporations and assignments of the proprietary leases
     to cooperative apartment units therein.
 
          Federal emergency aid has been made available to property owners in
     several areas of California as a result of recent flooding and landslides.
     Approximately 97% of the Pool 2 Mortgage Loans are secured by related
     Mortgaged Properties located in the 27 counties in California known to be
     affected by such conditions. The Company has not undertaken the physical
     inspection of any such Mortgaged Property and, as a result, there can be no
     assurance that material damage to any Mortgaged Property in such affected
     areas has not occurred.
 
          Under the Agreement, the Company will represent and warrant that each
     Pool 2 Mortgaged Property is free of material damage and in good repair as
     of the date of issuance of the Certificates. In the event of an uncured
     breach of such representation and warranty that materially and adversely
     affects the interests of Certificateholders, the Company will be required
     to repurchase the affected Pool 2 Mortgage Loan or substitute another
     mortgage loan therefor. If any damage caused by the flooding or landslides
     occurs after the Closing Date, the Company will have no such obligation. In
     addition, the standard hazard policies covering the Mortgaged Properties
     generally do not cover damage caused by flooding and landslides, and flood
     or landslide insurance may not have been obtained with respect to such
     Mortgaged Properties. To the extent that any insurance proceeds received
     with respect to any damaged Pool 2 Mortgaged Properties are not applied to
     the restoration thereof, such proceeds will be used to prepay the related
     Pool 2 Mortgage Loans in whole or in part. Any repurchases or prepayments
     of the Pool 2 Mortgage Loans may reduce the weighted average lives of the
     Certificates offered hereby and will reduce the yields on any Classes of
     Pool 2 Certificates purchased at a premium.
 
DISTRIBUTIONS ON THE POOL 2 CERTIFICATES
 
     Allocation of Pool 2 Available Funds.  Interest and principal on the Pool 2
Certificates will be distributed monthly on each Distribution Date commencing in
August 1998 in an aggregate amount equal to the Pool 2 Available Funds for such
Distribution Date.
 
                                      A2-2

<PAGE>

     On each Distribution Date, the Pool 2 Available Funds will be distributed
in the following order of priority among the Certificates:
 
          first, to the Classes of Pool 2 Senior Certificates (other than the
     Class 2-PO Certificates), the Accrued Certificate Interest on each such
     Class for such Distribution Date, any shortfall in available amounts being
     allocated among such Classes in proportion to the amount of Accrued
     Certificate Interest otherwise distributable thereon; provided that, on
     each Distribution Date through the related Accretion Termination Date (as
     defined herein) for the Class 2-A7 and Class 2-A8 Certificates, such
     amounts with respect to such Certificates will not be distributed on such
     Certificates under this priority first but will instead be added to the
     respective Class Certificate Principal Balances thereof and distributed in
     accordance with the first paragraph following priority eighth below;
 
          second, to the Classes of Pool 2 Senior Certificates (other than the
     Class 2-PO Certificates), any Accrued Certificate Interest thereon
     remaining undistributed from previous Distribution Dates, to the extent of
     remaining Pool 2 Available Funds, any shortfall in available amounts being
     allocated among such Classes in proportion to the amount of such Accrued
     Certificate Interest remaining undistributed (or not added to the Class
     Certificate Principal Balance of the Class 2-A7 and Class 2-A8
     Certificates) for each such Class for such Distribution Date; provided that
     on each Distribution Date through the Accretion Termination Dates for the
     Class 2-A7 and Class 2-A8 Certificates, such amounts with respect to such
     Certificates will not be distributed on such Certificates under this
     priority second but will instead be added to the respective Class
     Certificate Principal Balances thereof and distributed in accordance with
     the first paragraph following priority eighth below;
 
          third, to the Classes of Pool 2 Senior Certificates, in reduction of
     the Class Certificate Principal Balances thereof, to the extent of
     remaining Pool 2 Available Funds, concurrently, as follows:
 
          (a) to the Class 2-A1, Class 2-A2, Class 2-A4, Class 2-A5, Class 2-A6,
     Class 2-A7, Class 2-A8, Class 2-A9, Class 2-R and Class 2-RL Certificates,
     the Pool 2 Senior Optimal Principal Amount for such Distribution Date,
     concurrently, as follows:
 
             (i) to the Class 2-A9 Certificates (the 'Pool 2 Group II Senior
        Certificates'), the lesser of (A) the Class 2-A9 Principal Distribution
        Amount (as defined herein) for such Distribution Date and (B)
        approximately 98.60000% of the Pool 2 Senior Optimal Principal Amount
        for such Distribution Date, until the Class Certificate Principal
        Balance of the Class 2-A9 Certificates has been reduced to zero;
 
             (ii) to the Class 2-A1, Class 2-A2, Class 2-A4, Class 2-A5, Class
        2-A6, Class 2-A7, Class 2-A8, Class 2-R and Class 2-RL Certificates
        (together, the 'Pool 2 Group I Senior Certificates'), the Pool 2 Senior
        Optimal Principal Amount, less the amount described in clause (i) above,
        in the following order of priority:
 
                (A) sequentially, to the Class 2-A1 and Class 2-A2 Certificates,
           in that order, up to the amount necessary to reduce the respective
           Class Certificate Principal Balances of such Classes to their
           respective PAC Balances (as set forth in the Pool 2 PAC Balances
           Table attached to this Pool 2 Annex) for such Distribution Date;
 
                (B) pro rata, to the Class 2-A4, Class 2-A5 and Class 2-A6
           Certificates, up to the amount necessary to reduce the respective
           Class Certificate Principal Balances of such Classes to their
           respective TAC Balances (as set forth in the Pool 2 TAC Balances
           Table attached to this Pool 2 Annex) for such Distribution Date;
 
                (C) to the Class 2-A7 Certificates, until the Class Certificate
           Principal Balance thereof has been reduced to zero;
 
                (D) pro rata, to the Class 2-A4, Class 2-A5 and Class 2-A6
           Certificates, without regard to their respective TAC Balances, until
           the Class Certificate Principal Balances thereof have each been
           reduced to zero;
 
                                      A2-3

<PAGE>

                (E) to the Class 2-A8 Certificates, until the Class Certificate
           Principal Balance thereof has been reduced to zero;
 
                (F) sequentially, to the Class 2-A1 and Class 2-A2 Certificates,
           in that order, without regard to their respective PAC Balances, until
           the Class Certificate Principal Balances thereof have each been
           reduced to zero, such that no distribution pursuant to this clause
           will be made to the Class 2-A2 Certificates until the Class
           Certificate Principal Balance of the Class 2-A1 Certificates has been
           reduced to zero;
 
                (G) sequentially, to the Class 2-R and Class 2-RL Certificates,
           in that order, until the Class Certificate Principal Balances thereof
           have each been reduced to zero, such that no distribution pursuant to
           this clause will be made to the Class 2-RL Certificates until the
           Class Certificate Principal Balance of the Class 2-R Certificates has
           been reduced to zero; and
 
          (b) to the Class 2-PO Certificates, the Class 2-PO Principal
     Distribution Amount for such Distribution Date, until the Class Certificate
     Principal Balance thereof has been reduced to zero;
 
          fourth, to the Class 2-PO Certificates, to the extent of remaining
     Pool 2 Available Funds, the Class 2-PO Deferred Amount for such
     Distribution Date, until the Class Certificate Principal Balance thereof
     has been reduced to zero; provided that, (i) on any Distribution Date,
     distributions pursuant to this priority fourth shall not exceed the Pool 2
     Junior Optimal Principal Amount for such Distribution Date, (ii) such
     distributions shall not reduce the Class Certificate Principal Balance of
     the Class 2-PO Certificates and (iii) no distribution will be made in
     respect of the Class 2-PO Deferred Amount after the Distribution Date on
     which the respective Class Certificate Principal Balances of the Pool 2
     Junior Certificates have been reduced to zero (the 'Pool 2 Cross-Over
     Date');
 
          fifth, to the Class 2-M Certificates, to the extent of remaining Pool
     2 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date;
 
          sixth, to the Class 2-B1 Certificates, to the extent of remaining Pool
     2 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date;
 
          seventh, to the Class 2-B2 Certificates, to the extent of remaining
     Pool 2 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date; and
 
          eighth, to the Class 2-B3, Class 2-B4 and Class 2-B5 Certificates, to
     the extent of remaining Pool 2 Available Funds: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Classes' Allocable Shares for such Distribution Date.
 
     On each Distribution Date, on which there is a Pool 2 Accrual Amount (as
defined herein), before distributions have been made pursuant to priority third
above, the Pool 2 Accrual Amount will be distributed in the following order of
priority in reduction of the Class Certificate Principal Balances of the
following Classes:
 
          first, pro rata, to the Class 2-A4, Class 2-A5 and Class 2-A6
     Certificates, up to the amount necessary to reduce the respective Class
     Certificate Principal Balances of such Classes to their respective TAC
     Balances (as set forth in the Pool 2 TAC Balances Table) for such
     Distribution Date;
 
          second, to the Class 2-A7 Certificates, until the Class Certificate
     Principal Balance thereof has been reduced to zero;
 
          third, pro rata, to the Class 2-A4, Class 2-A5 and Class 2-A6
     Certificates, without regard to their respective TAC Balances, until the
     Class Certificate Principal Balances thereof have each been reduced to zero
     and;
 
                                      A2-4

<PAGE>

          fourth, to the Class 2-A8 Certificates, until the Class Certificate
     Principal Balance thereof has been reduced to zero.
 
     Any Accrual Amount for the Class 2-A7 and Class 2-A8 Certificates
distributed as described above on a Distribution Date will be added to the Class
Certificate Principal Balance of the related Accrual Certificates on such
Distribution Date. The 'Accrual Amount' for each of the Class 2-A7 and Class
2-A8 Certificates (together, the 'Pool 2 Accrual Amount') with respect to each
Distribution Date through the related Accretion Termination Date (as defined
below) will be an amount equal to the sum of (a) the Accrued Certificate
Interest on the related Certificates in accordance with priority first under
'--Allocation of Pool 2 Available Funds' above and (b) any available amount
allocable to such Classes in accordance with priority second under '--Allocation
of Pool 2 Available Funds' above.
 
     'Pro rata' distributions among Classes of Certificates will be made in
proportion to the then-current Class Certificate Principal Balances of such
Classes.
 
     On each Distribution Date after the Pool 2 Cross-Over Date, distributions
of principal on the outstanding Pool 2 Senior Certificates (other than the Class
2-A3 Certificates) will be made pro rata among all such Certificates, regardless
of the allocation, or sequential nature, of the principal payments described in
priority third above.
 
     If, after distributions have been made pursuant to priorities first and
second above on any Distribution Date, the remaining Pool 2 Available Funds are
less than the sum of the amounts required to be distributed in accordance with
priority third above, the Pool 2 Senior Optimal Principal Amount and the Class
2-PO Principal Distribution Amount for such Distribution Date shall be
proportionately reduced, and such remaining Pool 2 Available Funds will be
distributed on the Pool 2 Senior Certificates in accordance with the applicable
clauses of priority third above on the basis of such reduced amounts.
Notwithstanding such allocation, Realized Losses in respect of Pool 2 will be
allocated to the Pool 2 Certificates as described under '--Allocation of
Realized Losses on the Pool 2 Certificates' herein.
 
     Interest.  Interest will accrue on the Pool 2 Certificates offered hereby
(other than the Class 2-A4, Class 2-A5 and Class 2-A6 Certificates) at the
respective fixed Certificate Interest Rates set forth on the cover hereof during
each Interest Accrual Period. Interest will be calculated on the basis of a
360-day year consisting of twelve 30-day months.
 
     The 'Interest Accrual Period' for each Class of Pool 2 Certificates
entitled to distributions of interest other than the Class 2-A4, Class 2-A5 and
Class 2-A6 Certificates will be the one-month period ending on the last day of
the month preceding the month in which a Distribution Date occurs. The 'Interest
Accrual Period' for the Class 2-A4, Class 2-A5 and Class 2-A6 Certificates will
be the one-month period commencing on the 25th day of the month preceding the
month in which a Distribution Date occurs and ending on the 24th day of the
month of such Distribution Date. Interest will be calculated on the basis of a
360-day year consisting of twelve 30-day months.
 
     Interest will accrue on the Class 2-B3, Class 2-B4 and Class 2-B5
Certificates at the Certificate Interest Rate of 6.75% per annum during each
Interest Accrual Period.
 
     Interest will accrue on the Class 2-A4 Certificates at the per annum rate
of 6.15000% for the first Interest Accrual Period, and thereafter, with respect
to each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
0.50% plus LIBOR and (ii) 8.50%, subject to a minimum rate of 0.50%.
 
     Interest will accrue on the Class 2-A5 Certificates at the per annum rate
of 9.60575% for the first Interest Accrual Period, and thereafter, with respect
to each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
38.94230% minus the product of 5.19231 and LIBOR and (ii) 38.94230%, subject to
a minimum rate of 0.00%.
 
     Interest will accrue on the Class 2-A6 Certificates at the per annum rate
of 7.50000% for the first Interest Accrual Period, and thereafter, with respect
to each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
120.00000% minus the product of 15.000000 and LIBOR and (ii) 7.50%, subject to a
minimum rate of 0.00%.
 
                                      A2-5

<PAGE>

     The Trustee shall determine LIBOR in accordance with the methods set forth
under '--Determination of LIBOR' below.
 
     On each Distribution Date through the applicable Accretion Termination Date
for the Class 2-A7 and Class 2-A8 Certificates, the Accrued Certificate Interest
on such Certificates on such Distribution Date will not be distributed on such
Certificate but will instead be added to the Class Certificate Principal Balance
of the related Class. On each Distribution Date after the applicable Accretion
Termination Date for the Class 2-A7 and Class 2-A8 Certificates, interest will
be distributable on such Certificates and will not be added to the Class
Certificate Principal Balances thereof. Notwithstanding the foregoing, if the
Accrual Amounts for the Accrual Certificates exceed the respective Class
Certificate Principal Balances of the related Accretion Directed Certificates
(as defined below) on the Distribution Date on which the respective Certificate
Principal Balances of such Accretion Directed Certificates are reduced to zero,
the excess Accrual Amount will be distributed as current interest on the related
Accrual Certificates and will not be added to the Certificate Principal Balance
thereof. 'Accretion Directed Certificates' are those Certificates that are
entitled to receive Accrual Amounts. The 'Accretion Termination Date' for the
Class 2-A7 Certificates is the earlier of (i) the Pool 2 Cross-Over Date and
(ii) the Distribution Date on which the Class Certificate Principal Balances of
the Class 2-A4, Class 2-A5 and Class 2-A6 Certificates have each been reduced to
zero. The 'Accretion Termination Date' for the Class 2-A8 Certificates is the
earlier of (i) the Pool 2 Cross-Over Date and (ii) the Distribution Date on
which the Class Certificate Principal Balances of the Class 2-A4, Class 2-A5,
Class 2-A6 and Class 2-A7 Certificates have each been reduced to zero.
 
     The Class 2-PO Certificates are principal-only Certificates and will not
accrue interest.
 
     The 'Accrued Certificate Interest' for any Pool 2 Certificate (other than a
Class 2-PO Certificate) for any Distribution Date will equal the interest
accrued during the related Interest Accrual Period at the applicable Certificate
Interest Rate on the Certificate Principal Balance (or Notional Principal
Balance in the case of a Class 2-A3 Certificate) of such Certificate immediately
prior to such Distribution Date, less such Certificate's share of any allocable
Net Interest Shortfall (as defined below), the interest portion of any Excess
Losses (as defined herein) allocable to Certificateholders through the Pool 2
Cross-Over Date and, after the Pool 2 Cross-Over Date, the interest portion of
Realized Losses allocable to Certificateholders including Excess Losses, in each
case in respect of the Pool 2 Mortgage Loans.
 
     The 'Certificate Principal Balance' of any Pool 2 Certificate (other than a
Class 2-A3 Certificate) as of any Distribution Date will equal such
Certificate's Certificate Principal Balance on the Closing Date as reduced by
(i) all amounts distributed on previous Distribution Dates on such Certificate
on account of principal, (ii) the principal portion of all Realized Losses
previously allocated to such Certificate and (iii) in the case of a Pool 2
Junior Certificate, such Certificate's pro rata share, if any, of the Pool 2
Junior Certificate Writedown Amount (as defined below) and the Class 2-PO
Deferred Payment Writedown Amount (as defined below) for previous Distribution
Dates. As of any Distribution Date, the 'Pool 2 Junior Certificate Writedown
Amount' will equal the amount by which (a) the sum of the Class Certificate
Principal Balances of all of the Pool 2 Certificates (after giving effect to the
distribution of principal and the application of Realized Losses in respect of
the Pool 2 Mortgage Loans in reduction of the Certificate Principal Balances of
such Certificates on such Distribution Date) exceeds (b) the aggregate Scheduled
Principal Balance of the Pool 2 Mortgage Loans on the first day of the month of
such Distribution Date less any applicable Deficient Valuations occurring on or
prior to the Bankruptcy Coverage Termination Date in respect of Pool 2. For any
Distribution Date, the 'Class 2-PO Deferred Payment Writedown Amount' will equal
the amount, if any, distributed on such date in respect of the Class 2-PO
Deferred Amount pursuant to priority fourth under '--Allocation of Pool 2
Available Funds' above. The Pool 2 Junior Certificate Writedown Amount and the
Class 2-PO Deferred Payment Writedown Amount will each be allocated to the
Classes of Pool 2 Junior Certificates in inverse order of priority, until the
Class Certificate Principal Balance of each such Class has been reduced to zero.
 
     The aggregate 'Notional Principal Balance' of the Class 2-A3 Certificates
as of any Distribution Date will equal the sum of (a) approximately
2.2222222222% of the Class Certificate Principal Balance of the Class 2-A1
Certificates on such Distribution Date and (b) approximately 2.9629629630% of
the Class Certificate Principal Balance of the Class 2-A2 Certificates on such
Distribution Date. The initial Notional Principal Balance for the Class 2-A3
Certificates is approximately $1,645,926, subject to the variance described
herein.
 
                                      A2-6

<PAGE>

     For the definitions of 'Interest Accrual Period,' 'Net Interest Shortfall'
and 'Interest Shortfall,' see 'Pool 1 Annex--Distributions on the Pool 1
Certificates--Interest' herein.
 
     Any Net Interest Shortfall, the interest portion of any Excess Losses
allocable to Pool 2 Certificateholders through the Pool 2 Cross-Over Date and,
after the Pool 2 Cross-Over Date, the interest portion of any Realized Losses
allocable to Certificateholders (see '--Allocation of Realized Losses on the
Pool 2 Certificates' herein), in each case in respect of the Pool 2 Mortgage
Loans, will, on each Distribution Date, be allocated among all the outstanding
Pool 2 Certificates (other than the Class 2-PO Certificates), in proportion to
the amount of Accrued Certificate Interest that would have been allocated
thereto in the absence of such shortfall and losses. See 'The Pooling and
Servicing Agreement--Servicing Compensation, Compensating Interest and Payment
of Expenses' herein.
 
     The interest portion of any Realized Losses (other than Excess Losses) in
respect of the Pool 2 Mortgage Loans occurring prior to the Pool 2 Cross-Over
Date will not be allocated among any Pool 2 Certificates, but will reduce the
amount of Pool 2 Available Funds on the related Distribution Date. As a result
of the subordination of the Pool 2 Junior Certificates in right of distribution
relative to the Pool 2 Senior Certificates, such losses will be borne first by
the Pool 2 Junior Certificates (to the extent then outstanding) in inverse order
of priority.
 
     If the Pool 2 Available Funds are insufficient on any Distribution Date to
distribute the aggregate Accrued Certificate Interest on the Pool 2 Senior
Certificates (other than the Class 2-PO Certificates) to their
Certificateholders, any shortfall in available amounts will be allocated among
such Classes of Pool 2 Senior Certificates in proportion to the amounts of
Accrued Certificate Interest otherwise distributable thereon or, in the case of
the Class 2-A7 and Class 2-A8 Certificates through the related Accretion
Termination Date, the amounts that would otherwise be added to principal
thereof. Such reduction with respect to the Class 2-A7 and Class 2-A8
Certificates will effect a corresponding reduction in the Accrual Amount for the
Class 2-A7 and Class 2-A8 Certificates, respectively, on such Distribution Date.
The amount of any such undistributed Accrued Certificate Interest will be added
to the amount to be distributed in respect of interest on the Pool 2 Senior
Certificates (other than the Class 2-PO Certificates) (or added to the Class
Certificate Principal Balance, in the case of the Class 2-A7 and Class 2-A8
Certificates through the related Accretion Termination Date) on subsequent
Distribution Dates in accordance with priority second under '--Allocation of
Pool 2 Available Funds' above. No interest will accrue on any Accrued
Certificate Interest remaining undistributed from previous Distribution Dates.
 
     Determination of LIBOR.  The Trustee shall determine the Certificate
Interest Rate for the Class 2-A4, Class 2-A5 and Class 2-A6 Certificates for any
Interest Accrual Period by reference to LIBOR. 'LIBOR' will be determined on the
second London banking day (as defined below) immediately preceding the
commencement of each Interest Accrual Period for the Class 2-A4, Class 2-A5 and
Class 2-A6 Certificates (other than the first Interest Accrual Period) (each, a
'LIBOR Determination Date'), and will be (1) the rate (expressed as a percentage
per annum) for deposits in U.S. dollars for a period of one month that appears
on Telerate page 3750 as of 11:00 a.m., London time, on such LIBOR Determination
Date (such rate, the 'British Bankers' Association Interest Settlement Rate') or
(2) if such rate does not appear on Telerate Page 3750 as of 11:00 a.m., London
time, on the applicable LIBOR Determination Date, the Trustee will request the
principal London office of each of four major reference banks in the London
interbank market selected by the Trustee to provide such banks' respective
offered quotations (expressed as a percentage per annum) to prime banks in the
London interbank market for deposits in U.S. Dollars for a period of one month
as of 11:00 a.m., London time, on such LIBOR Determination Date. If at least two
such offered quotations are so provided, LIBOR will be the arithmetic mean of
such quotations. If fewer than two such quotations are so provided, the Trustee
will request each of three major banks in New York City selected by the Trustee
to provide such banks' respective rates (expressed as a percentage per annum)
for loans in U.S. Dollars to leading European banks for a period of one month as
of approximately 11:00 a.m., New York City time, on the first day of the
applicable Interest Accrual Period, and LIBOR will be the arithmetic mean of the
quotations so provided. If on any LIBOR Determination Date the Trustee is
required but is unable to determine LIBOR in the manner provided in the
immediately preceding sentence, LIBOR for the related Interest Accrual Period
will be LIBOR as determined on the previous LIBOR Determination Date, or, in the
case of the first LIBOR Determination Date, 5.65000% per annum. As used herein
with respect to a LIBOR Determination Date, 'London banking day' means a day on
which banks are open for dealing in foreign currency and exchange in London.
 
                                      A2-7
<PAGE>

     The establishment of LIBOR by the Trustee and the Trustee's subsequent
calculation of the rates of interest applicable to the Class 2-A4, Class 2-A5
and Class 2-A6 Certificates for the relevant Interest Accrual Period, in the
absence of manifest error, will be final and binding. The Certificate Interest
Rates on the Class 2-A4, Class 2-A5 and Class 2-A6 Certificates for any Interest
Accrual Period may be obtained by calling the Trustee at (617) 664-5500.
 
     Principal.  All payments and other amounts received in respect of principal
of the Pool 2 Mortgage Loans will be allocated between (i) the Pool 2
Certificates (other than the Class 2-A3 and Class 2-PO Certificates), on the one
hand, and (ii) the Class 2-PO Certificates, on the other, in each case based on
the applicable Non-PO Percentage and the applicable PO Percentage, respectively,
of such amounts.
 
     The 'Non-PO Percentage' with respect to any Pool 2 Mortgage Loan with a Net
Mortgage Rate ('NMR') less than 6.75% per annum (each such Mortgage Loan, a
'Pool 2 Discount Mortgage Loan') will be the fraction, expressed as a
percentage, equal to NMR divided by 6.75%. The 'Non-PO Percentage' with respect
to any Pool 2 Mortgage Loan with a Net Mortgage Rate equal to or greater than
6.75% (each such Mortgage Loan, a 'Pool 2 Non-Discount Mortgage Loan') will be
100%. The 'PO Percentage' with respect to any Pool 2 Discount Mortgage Loan will
be the fraction, expressed as a percentage, equal to (6.75% - NMR) divided by
6.75%. The 'PO Percentage' with respect to any Pool 2 Non-Discount Mortgage Loan
will be 0%.
 
     The initial Class Certificate Principal Balance of the Class 2-PO
Certificates, which are not offered hereby, will be approximately $114,034
subject to the variance described herein.
 
     Distributions in reduction of the Class Certificate Principal Balance of
each Pool 2 Senior Certificate (other than the Class 2-A3 Certificates) will be
made on each Distribution Date pursuant to priority third and the first
paragraph following priority eighth under '--Allocation of Pool 2 Available
Funds' above. In accordance with priority third, the Pool 2 Available Funds
remaining after the distribution of interest on the Pool 2 Senior Certificates
(other than the Class 2-PO Certificates) will be allocated to such Certificates
in an aggregate amount not to exceed the sum of the Pool 2 Senior Optimal
Principal Amount and the Class 2-PO Principal Distribution Amount for such
Distribution Date. Distributions in reduction of the Class Certificate Principal
Balances of the Class 2-M, Class 2-B1 and Class 2-B2 Certificates will be made
pursuant to priorities fifth, sixth and seventh, respectively, under
'--Allocation of Pool 2 Available Funds' above. In accordance with each such
priority, the Pool 2 Available Funds, if any, remaining after distributions of
principal and interest on the Pool 2 Senior Certificates and payments in respect
of the Class 2-PO Deferred Amount on such Distribution Date will be allocated to
the Class 2-M, Class 2-B1 and Class 2-B2 Certificates in an amount equal to each
such Class's Allocable Share for such Distribution Date, provided that no
distribution of principal will be made on any such Class until any related Class
ranking prior thereto has received distributions of interest and principal, and
such Class has received distributions of interest, on such Distribution Date.
The Pool 2 Group II Senior Certificates will not receive any distributions in
respect of scheduled payments, prepayments or other unscheduled recoveries of
principal on the Pool 2 Mortgage Loans during the first five years after the
Cut-off Date, except as otherwise described herein on or following the earlier
of the Pool 2 Group I Final Distribution Date or the Pool 2 Cross-Over Date.
 
     The 'Pool 2 Senior Optimal Principal Amount' with respect to each
Distribution Date will be an amount equal to the sum of (i) the Pool 2 Senior
Percentage (as defined herein) of the applicable Non-PO Percentage of all
scheduled payments of principal due on each Pool 2 Mortgage Loan on the first
day of the month in which the Distribution Date occurs, as specified in the
amortization schedule at the time applicable thereto (after adjustment for
previous principal prepayments and the principal portion of Debt Service
Reductions in respect of Pool 2 after the Pool 2 Bankruptcy Coverage Termination
Date, but before any adjustment to such amortization schedule by reason of any
other bankruptcy or similar proceeding or any moratorium or similar waiver or
grace period), (ii) the Pool 2 Senior Prepayment Percentage (as defined herein)
of the applicable Non-PO Percentage of the Scheduled Principal Balance of each
Pool 2 Mortgage Loan which was the subject of a prepayment in full received by
the Company (or, in the case of a Pool 2 Mortgage Loan master-serviced by the
Company, of which the Company receives notice) during the applicable Prepayment
Period (as defined below), (iii) the Pool 2 Senior Prepayment Percentage of the
applicable Non-PO Percentage of all partial prepayments of principal received in
respect of Pool 2 during the applicable Prepayment Period, (iv) the lesser of
(a) the Pool 2 Senior Prepayment Percentage of the applicable Non-PO Percentage
of the sum of (w) the net liquidation proceeds allocable to
 
                                      A2-8
<PAGE>

principal on each Pool 2 Mortgage Loan which became a Liquidated Mortgage Loan
during the related Prepayment Period (other than Pool 2 Mortgage Loans described
in clause (x)) and (x) the principal balance of each Pool 2 Mortgage Loan that
was purchased by a private mortgage insurer during the related Prepayment Period
as an alternative to paying a claim under the related insurance policy, and (b)
the Pool 2 Senior Percentage of the applicable Non-PO Percentage of the sum of
(w) the Scheduled Principal Balance of each Pool 2 Mortgage Loan which became a
Liquidated Mortgage Loan during the related Prepayment Period (other than Pool 2
Mortgage Loans described in clause (x)) and (x) the Scheduled Principal Balance
of each Pool 2 Mortgage Loan that was purchased by a private mortgage insurer
during the related Prepayment Period as an alternative to paying a claim under
the related insurance policy less (y) in the case of clause (b), the Pool 2
Senior Percentage of the applicable Non-PO Percentage of the principal portion
of Excess Losses (other than Debt Service Reductions) in respect of Pool 2
during the related Prepayment Period, and (v) the Pool 2 Senior Prepayment
Percentage of the applicable Non-PO Percentage of the sum of (a) the Scheduled
Principal Balance of each Pool 2 Mortgage Loan which was repurchased by the
Company in connection with such Distribution Date and (b) the difference, if
any, between the Scheduled Principal Balance of a Pool 2 Mortgage Loan that has
been replaced by the Company with a substitute Pool 2 Mortgage Loan pursuant to
the Agreement in connection with such Distribution Date and the Scheduled
Principal Balance of such substitute Pool 2 Mortgage Loan.
 
     With respect to any Pool 2 Mortgage Loan that was the subject of a
voluntary prepayment in full and any Distribution Date, the 'Prepayment Period'
is the period from the sixteenth day of the month preceding the month of such
Distribution Date (or, in the case of the first Distribution Date, from the
Cut-off Date) through the fifteenth day of the month of such Distribution Date.
With respect to any other unscheduled prepayment of principal of any Pool 2
Mortgage Loan and any Distribution Date, the Prepayment Period is the month
preceding the month of such Distribution Date.
 
     The 'Pool 2 Senior Percentage' on any Distribution Date will equal the
lesser of (i) 100% and (ii) the percentage (carried to ten places rounded up)
obtained by dividing the aggregate Certificate Principal Balances of all the
Pool 2 Senior Certificates (less the Class Certificate Principal Balance of the
Class 2-PO Certificates) immediately preceding such Distribution Date by the
aggregate Certificate Principal Balances of all the Pool 2 Certificates (less
the Class Certificate Principal Balance of the Class 2-PO Certificates)
immediately preceding such Distribution Date. The initial Pool 2 Senior
Percentage is expected to be approximately 96.00%.
 
     The 'Pool 2 Senior Prepayment Percentage' on any Distribution Date
occurring during the periods set forth below will be as follows:
 
<TABLE>
<CAPTION>
          PERIOD (DATES INCLUSIVE)      POOL 2 SENIOR PREPAYMENT PERCENTAGE
          ----------------------------  ----------------------------------------------------------
          <S>                           <C>
          August 1998 - July 2003       100%                                        
          August 2003 - July 2004       Pool 2 Senior Percentage plus 70% of the Pool 2 Junior
                                        Percentage                                        
          August 2004 - July 2005       Pool 2 Senior Percentage plus 60% of the Pool 2 Junior
                                        Percentage                                        
          August 2005 - July 2006       Pool 2 Senior Percentage plus 40% of the Pool 2 Junior
                                        Percentage                                        
          August 2006 - July 2007       Pool 2 Senior Percentage plus 20% of the Pool 2 Junior
                                        Percentage
          August 2007 and thereafter    Pool 2 Senior Percentage
</TABLE>
 
     Notwithstanding the foregoing, if the Pool 2 Senior Percentage on any
Distribution Date exceeds the initial Pool 2 Senior Percentage, the Pool 2
Senior Prepayment Percentage for such Distribution Date will equal 100%.
 
     In addition, no reduction of the Pool 2 Senior Prepayment Percentage below
the level in effect for the most recent prior period specified in the table
above shall be effective on any Distribution Date (such limitation being the
'Pool 2 Senior Prepayment Percentage Stepdown Limitation') unless, as of the
last day of the month preceding such Distribution Date, either:
 
          (A)(i) the aggregate Scheduled Principal Balance of Pool 2 Mortgage
     Loans delinquent 60 days or more (including for this purpose any Pool 2
     Mortgage Loans in foreclosure and Pool 2 Mortgage Loans with respect to
     which the related Mortgaged Property has been acquired by the Trust Fund
     for Pool 2) does not exceed 50% of the aggregate Class Certificate
     Principal Balance of the Pool 2 Junior Certificates as of such date and
     (ii) cumulative Realized Losses in respect of Pool 2 do not exceed (a) 30%
     of the aggregate Class Certificate Principal Balance of the Pool 2 Junior
     Certificates as of the date of issuance of the Certificates (the 'Original
     Pool 2 Junior Principal Balance' and with the Original Pool 1 Junior
     Principal Balance, each a 'Junior Principal Balance') if such Distribution
     Date occurs between and including August 2003 and July 2004, (b) 35% of the
     Original Pool 2 Junior Principal Balance if such Distribution Date
 
                                      A2-9
<PAGE>

     occurs between and including August 2004 and July 2005, (c) 40% of the
     Original Pool 2 Junior Principal Balance if such Distribution Date occurs
     between and including August 2005 and July 2006, (d) 45% of the Original
     Pool 2 Junior Principal Balance if such Distribution Date occurs between
     and including August 2006 and July 2007, and (e) 50% of the Original Pool 2
     Junior Principal Balance if such Distribution Date occurs during or after
     August 2007; or
 
          (B)(i) the aggregate Scheduled Principal Balance of Pool 2 Mortgage
     Loans delinquent 60 days or more (including for this purpose any Pool 2
     Mortgage Loans in foreclosure and Pool 2 Mortgage Loans with respect to
     which the related Mortgaged Property has been acquired by the Trust Fund
     for Pool 2), averaged over the last three months, as a percentage of the
     aggregate Scheduled Principal Balance of all Pool 2 Mortgage Loans averaged
     over the last three months, does not exceed 4%, and (ii) cumulative
     Realized Losses in respect of Pool 2 do not exceed (a) 10% of the Original
     Pool 2 Junior Principal Balance if such Distribution Date occurs between
     and including August 2003 and July 2004, (b) 15% of the Original Pool 2
     Junior Principal Balance if such Distribution Date occurs between and
     including August 2004 and July 2005, (c) 20% of the Original Pool 2 Junior
     Principal Balance if such Distribution Date occurs between and including
     August 2005 and July 2006, (d) 25% of the Original Pool 2 Junior Principal
     Balance if such Distribution Date occurs between and including August 2006
     and July 2007, and (e) 30% of the Original Pool 2 Junior Principal Balance
     if such Distribution Date occurs during or after August 2007.
 
     The 'Class 2-A9 Principal Distribution Amount' for any Distribution Date
will equal the sum of (a) the total of the amounts described in clauses (i) and
(iv) of the definition of Pool 2 Senior Optimal Principal Amount for such date
multiplied by the Class 2-A9 Scheduled Distribution Percentage for such date,
and (b) the total of the amounts described in clauses (ii), (iii) and (v) of the
definition of Pool 2 Senior Optimal Principal Amount (without application of the
Pool 2 Senior Prepayment Percentage) for such date multiplied by the product of
(x) the Pool 2 Senior Percentage for such date, (y) the Class 2-A9 Prepayment
Distribution Percentage for such date and (z) the Class 2-A9 Percentage for such
date. Notwithstanding the foregoing, (i) on the Pool 2 Group I Final
Distribution Date, the Class 2-A9 Principal Distribution Amount will be
increased by any Pool 2 Senior Optimal Principal Amount remaining after
distributions of principal have been made on the Pool 2 Group I Senior
Certificates, and (ii) following the Pool 2 Group I Final Distribution Date, the
Class 2-A9 Principal Distribution Amount will equal the Pool 2 Senior Optimal
Principal Amount.
 
     The 'Class 2-A9 Prepayment Distribution Percentage' for any Distribution
Date will equal 0% through the Distribution Date in July 2003; 30% thereafter
through the Distribution Date in July 2004; 40% thereafter through the
Distribution Date in July 2005; 60% thereafter through the Distribution Date in
July 2006; 80% thereafter through the Distribution Date in July 2007; and 100%
thereafter.
 
     The 'Class 2-A9 Percentage' for any Distribution Date will equal the
percentage (carried to ten places rounded up) obtained by dividing (x) the sum
of the Class Certificate Principal Balances of the Class 2-A9 Certificates
immediately preceding such Distribution Date and approximately $13,000,000 by
(y) the aggregate Class Certificate Principal Balance of all the Pool 2 Senior
Certificates (other than the Class 2-PO Certificates) immediately preceding such
Distribution Date, provided that the Class 2-A9 Percentage for any Distribution
Date may not exceed 100% and provided further, that on any Distribution Date
after the Class Certificate Principal Balance of the Class 2-A9 Certificates has
been reduced to zero, the Class 2-A9 Percentage for such date will be zero.
 
     The 'Class 2-A9 Scheduled Distribution Percentage' for any Distribution
Date through the Distribution Date in July 2003 will equal 0%. The Class 2-A9
Scheduled Distribution Percentage for any Distribution Date after the
Distribution Date in July 2003 will equal the Class 2-A9 Percentage for such
Distribution Date. Notwithstanding the foregoing, on any Distribution Date after
the Pool 2 Group I Final Distribution Date, the Class 2-A9 Scheduled
Distribution Percentage will equal the Pool 2 Senior Percentage for such
Distribution Date.
 
     The 'Class 2-PO Principal Distribution Amount' with respect to each
Distribution Date will be an amount equal to the sum of (i) the applicable PO
Percentage of all scheduled payments of principal due on each Pool 2 Mortgage
Loan on the first day of the month in which the Distribution Date occurs, as
specified in the amortization schedule at the time applicable thereto (after
adjustment for previous principal prepayments and the principal portion of Debt
Service Reductions in respect of Pool 2 after the Bankruptcy Coverage
Termination
 
                                     A2-10

<PAGE>

Date in respect of Pool 2, but before any adjustment to such amortization
schedule by reason of any other bankruptcy or similar proceeding or any
moratorium or similar waiver or grace period), (ii) the applicable PO Percentage
of the Scheduled Principal Balance of each Pool 2 Mortgage Loan which was the
subject of a prepayment in full received by the Company (or, in the case of a
Pool 2 Mortgage Loan master-serviced by the Company, of which the Company
receives notice) during the related Prepayment Period, (iii) the applicable PO
Percentage of all partial prepayments of principal received during the related
Prepayment Period, (iv) the applicable PO Percentage of the sum of (w) the net
liquidation proceeds allocable to principal on each Pool 2 Mortgage Loan which
became a Liquidated Mortgage Loan during the related Prepayment Period (other
than Pool 2 Mortgage Loans described in clause (x)) and (x) the principal
balance of each Pool 2 Mortgage Loan that was purchased by a private mortgage
insurer during the related Prepayment Period as an alternative to paying a claim
under the related insurance policy, and (v) the applicable PO Percentage of the
sum of (a) the Scheduled Principal Balance of each Pool 2 Mortgage Loan which
was repurchased by the Company in connection with such Distribution Date and (b)
the difference, if any, between the Scheduled Principal Balance of a Pool 2
Mortgage Loan that has been replaced by the Company with a substitute Pool 2
Mortgage Loan pursuant to the Agreement in connection with such Distribution
Date and the Scheduled Principal Balance of such substitute Pool 2 Mortgage
Loan. For purposes of clauses (ii) and (v) above, the Scheduled Principal
Balance of a Pool 2 Mortgage Loan will be reduced by the amount of any Deficient
Valuation that occurred on or before the Pool 2 Bankruptcy Coverage Termination
Date.
 
     The 'Pool 2 Group I Final Distribution Date' is the Distribution Date on
which the Class Certificate Principal Balance of each of the Pool 2 Group I
Senior Certificates has been reduced to zero.
 
     The 'Pool 2 Junior Percentage' on any Distribution Date will equal 100%
minus the Pool 2 Senior Percentage. The 'Pool 2 Junior Prepayment Percentage'
will equal 100% minus the Pool 2 Senior Prepayment Percentage, except that on
any Distribution Date after the respective Class Certificate Principal Balances
of the Pool 2 Senior Certificates (other than the Class 2-PO Certificates) have
each been reduced to zero (the 'Pool 2 Senior Final Distribution Date'), the
Pool 2 Junior Prepayment Percentage will equal 100%. The initial Pool 2 Junior
Percentage is expected to be approximately 4.00%.
 
     The 'Pool 2 Junior Optimal Principal Amount' with respect to each
Distribution Date will be an amount equal to the sum of the following (but in no
event greater than the aggregate Class Certificate Principal Balances of the
Pool 2 Junior Certificates immediately prior to such Distribution Date): (i) the
Pool 2 Junior Percentage of the applicable Non-PO Percentage of all scheduled
payments of principal due on each outstanding Pool 2 Mortgage Loan on the first
day of the month in which the Distribution Date occurs, as specified in the
amortization schedule at the time applicable thereto (after adjustment for
previous principal prepayments and the principal portion of Debt Service
Reductions in respect of Pool 2 after the Pool 2 Bankruptcy Coverage Termination
Date, but before any adjustment to such amortization schedule by reason of any
other bankruptcy or similar proceeding or any moratorium or similar waiver or
grace period), (ii) the Pool 2 Junior Prepayment Percentage of the applicable
Non-PO Percentage of the Scheduled Principal Balance of each Pool 2 Mortgage
Loan which was the subject of a prepayment in full received by the Company (or,
in the case of a Pool 2 Mortgage Loan master-serviced by the Company, of which
the Company receives notice) during the related Prepayment Period, (iii) the
Pool 2 Junior Prepayment Percentage of the applicable Non-PO Percentage of all
partial prepayments of principal received in respect of Pool 2 during the
related Prepayment Period (plus, on the Pool 2 Senior Final Distribution Date,
100% of any Pool 2 Senior Optimal Principal Amount remaining undistributed on
each date), (iv) the excess, if any, of the sum of (a) the applicable Non-PO
Percentage of the net liquidation proceeds allocable to principal received
during the related Prepayment Period in respect of each Liquidated Mortgage Loan
in Pool 2 (other than Pool 2 Mortgage Loans described in clause (b)) and (b) the
applicable Non-PO Percentage of the principal balance of each Pool 2 Mortgage
Loan that was purchased by a private mortgage insurer during the related
Prepayment Period as an alternative to paying a claim under the related
insurance policy over (c) the sum of the amounts distributable to the Pool 2
Senior Certificateholders (other than the holders of the Class 2-PO
Certificates) pursuant to clause (iv) of the definition of Pool 2 Senior Optimal
Principal Amount on such Distribution Date, and (v) the Pool 2 Junior Prepayment
Percentage of the applicable Non-PO Percentage of the sum of (a) the Scheduled
Principal Balance of each Pool 2 Mortgage Loan which was repurchased by the
Company in connection with such Distribution Date and (b) the difference, if
any, between the Scheduled Principal Balance of a Pool 2 Mortgage Loan that has
been replaced by the Company
 
                                     A2-11

<PAGE>

with a substitute Pool 2 Mortgage Loan pursuant to the Agreement in connection
with such Distribution Date and the Scheduled Principal Balance of such
substitute Pool 2 Mortgage Loan.
 
     The 'Allocable Share' with respect to any Class of Pool 2 Junior
Certificates on any Distribution Date will generally equal such Class's pro rata
share (based on the Class Certificate Principal Balance of each Class entitled
thereto) of each of the components of the Pool 2 Junior Optimal Principal Amount
described above; provided, that, except as described in the second succeeding
sentence, no Class 2-B Certificate shall be entitled on any Distribution Date to
receive distributions pursuant to clauses (ii), (iii) and (v) of the definition
of Pool 2 Junior Optimal Principal Amount unless the Class Prepayment
Distribution Trigger for the related Class is satisfied for such Distribution
Date. The 'Class Prepayment Distribution Trigger' for a Class of Class 2-B
Certificates for any Distribution Date is satisfied if the fraction (expressed
as a percentage), the numerator of which is the aggregate Class Certificate
Principal Balance of such Class and each Class subordinate thereto, if any, and
the denominator of which is the aggregate Scheduled Principal Balance of the
Pool 2 Mortgage Loans with respect to such Distribution Date, equals or exceeds
such percentage calculated as of the Closing Date. If, on any Distribution Date,
the Class Certificate Principal Balance of the Class 2-M Certificates or of any
Class of Class 2-B Certificates for which the related Class Prepayment
Distribution Trigger was satisfied on such Distribution Date is reduced to zero,
any amounts distributable to such Class pursuant to clauses (ii), (iii) and (v)
of the definition of Pool 2 Junior Optimal Principal Amount, to the extent of
such Class's remaining Allocable Share, shall be distributed to the remaining
Classes of Pool 2 Junior Certificates in reduction of their respective Class
Certificate Principal Balances in order of priority. If the Class Prepayment
Distribution Trigger is not satisfied for any Class of Class 2-B Certificates on
any Distribution Date, this may have the effect of accelerating the amortization
of more senior ranking Classes of Pool 2 Junior Certificates. On any
Distribution Date, any reduction in funds available for distribution to the
Classes of Pool 2 Junior Certificates resulting from a distribution of the Class
2-PO Deferred Amount to the Class 2-PO Certificates will be allocated to the
Classes of Pool 2 Junior Certificates, in reduction of the Allocable Shares
thereof, in inverse order of priority.
 
     Example of Distributions.  For an example of hypothetical distributions on
the Certificates for a particular Distribution Date, see 'Description of the
Certificates--Example of Distributions' in the accompanying Prospectus.
 
ALLOCATION OF REALIZED LOSSES ON THE POOL 2 CERTIFICATES
 
     For the definitions of 'Realized Loss,' 'Liquidated Mortgage Loan,'
'Deficient Valuation,' 'Debt Service Reduction,' 'Bankruptcy Loss,' 'Fraud
Loss,' 'Excess Loss' and 'Special Hazard Loss,' see 'Pool 1 Annex--Allocation of
Realized Losses on the Pool 1 Certificates.'
 
     On each Distribution Date, the applicable PO Percentage of the principal
portion of any Realized Loss (including any Excess Loss, but not including any
Debt Service Reduction) on a Pool 2 Discount Mortgage Loan will be allocated to
the Class 2-PO Certificates until the Class Certificate Principal Balance
thereof is reduced to zero. With respect to any Distribution Date through the
Pool 2 Cross-Over Date, the aggregate of all amounts so allocable to the Class
2-PO Certificates on such date in respect of Realized Losses other than Excess
Losses in respect of the Pool 2 Discount Mortgage Loans and all amounts
previously allocated in respect of such losses to the Class 2-PO Certificates
and not distributed on prior Distribution Dates will be the 'Class 2-PO Deferred
Amount.' To the extent funds are available therefor on any Distribution Date
through the Pool 2 Cross-Over Date, distributions in respect of the Class 2-PO
Deferred Amount will be made on the Class 2-PO Certificates in accordance with
priority fourth under '--Distributions on the Pool 2 Certificates--Allocation of
Pool 2 Available Funds' above. Any distribution of Pool 2 Available Funds in
respect of the Class 2-PO Deferred Amount will not reduce the Class Certificate
Principal Balance of the Class 2-PO Certificates. No interest will accrue on the
Class 2-PO Deferred Amount. On each Distribution Date through the Pool 2
Cross-Over Date, the Class Certificate Principal Balance of the lowest ranking
Class of Pool 2 Junior Certificates then outstanding will be reduced by the
amount of any distributions in respect of the Class 2-PO Deferred Amount on such
Distribution Date, through the operation of the Class 2-PO Deferred Payment
Writedown Amount. After the Pool 2 Cross-Over Date, no distributions will be
made in respect of, and losses allocated to the Class 2-PO Certificates will not
be added to, the Class 2-PO Deferred Amount. Any distribution of Unanticipated
Recoveries (as defined in the accompanying Prospectus) in respect of Pool 2 on
the Class 2-PO Certificates will be adjusted to take into account the Class 2-PO
Deferred Amount previously paid to such Class as specified in the Agreement. See
'Servicing of the Mortgage Loans and Contracts--Unanticipated Recoveries of
Losses on the Mortgage Loans' in the accompanying Prospectus.
 
                                     A2-12

<PAGE>

     The applicable Non-PO Percentage of the principal portion of any Realized
Loss (other than an Excess Loss or a Debt Service Reduction) on a Pool 2
Mortgage Loan for any Distribution Date will not be allocated to any Pool 2
Senior Certificates until the Pool 2 Cross-Over Date. Prior to the Pool 2
Cross-Over Date (and on such date under certain circumstances), the applicable
Non-PO Percentage of the principal portion of any such Realized Loss will be
allocated among the outstanding Classes of Pool 2 Junior Certificates, in
inverse order of priority, until the Class Certificate Principal Balance of each
such Class has been reduced to zero (i.e., such Realized Losses will be
allocated first to the Class 2-B5 Certificates while such Certificates are
outstanding, second to the Class 2-B4 Certificates, and so on). The applicable
Non-PO Percentage of the principal portion of any Excess Loss (other than a Debt
Service Reduction) on a Pool 2 Mortgage Loan for any Distribution Date will be
allocated pro rata among all outstanding Classes of Pool 2 Certificates (other
than the Class 2-A3 and Class 2-PO Certificates) based on their Class
Certificate Principal Balances. Commencing on the Pool 2 Cross-Over Date, the
applicable Non-PO Percentage of the principal portion of any Realized Loss
(other than a Debt Service Reduction) in respect of the Pool 2 Mortgage Loans
will be allocated among the outstanding Classes of Pool 2 Senior Certificates
(other than the Class 2-A3 and Class 2-PO Certificates) pro rata based upon
their Class Certificate Principal Balances.
 
     No reduction of the Class Certificate Principal Balance of any Class of
Pool 2 Certificates will be made on any Distribution Date on account of any
Realized Loss to the extent that such reduction would have the effect of
reducing the aggregate Certificate Principal Balance of all of the Pool 2
Certificates as of such Distribution Date to an amount less than the Pool
Scheduled Principal Balance of Pool 2 as of the first day of the month of such
Distribution Date, less any Deficient Valuations in respect of Pool 2 Mortgage
Loans occurring on or prior to the Pool 2 Bankruptcy Coverage Termination Date
(such limitation being the 'Pool 2 Loss Allocation Limitation' and, with the
Pool 1 Loss Allocation Limitation, each a 'Loss Allocation Limitation').
 
     Because the aggregate Notional Principal Balance of the Class 2-A3
Certificates will be determined by reference to the Class Certificate Principal
Balances from time to time of the Class 2-A1 and Class 2-A2 Certificates, any
Realized Losses that are applied to reduce the Class Certificate Principal
Balances of the Class 2-A1 and Class 2-A2 Certificates will also reduce the
Notional Principal Balance of the Class 2-A3 Certificates. As a result, the
amount of interest distributable on the Class 2-A3 Certificates would be
reduced.
 
     The principal portion of Debt Service Reductions in respect of the Pool 2
Mortgage Loans will not be allocated in reduction of the Certificate Principal
Balance of any Pool 2 Certificate. However, after the Pool 2 Bankruptcy Coverage
Termination Date, the amounts distributable under clause (i) of each of the
definitions of Pool 2 Senior Optimal Principal Amount, Class 2-PO Principal
Distribution Amount and Pool 2 Junior Optimal Principal Amount will be reduced
by the amount of any Debt Service Reductions in respect of the Pool 2 Mortgage
Loans. Regardless of when they occur, such Debt Service Reductions may reduce
the amount of Pool 2 Available Funds otherwise available for distribution on a
Distribution Date. As a result of the subordination of the Pool 2 Junior
Certificates in right of distribution relative to the Pool 2 Senior
Certificates, any Debt Service Reductions in respect of the Pool 2 Mortgage
Loans prior to the Pool 2 Bankruptcy Coverage Termination Date will be borne by
the Pool 2 Junior Certificates (to the extent then outstanding) in inverse order
of priority.
 
     All allocations of Realized Losses in respect of the Pool 2 Mortgage Loans
to a Class of Pool 2 Certificates will be accomplished on a Distribution Date by
reducing the applicable Class Certificate Principal Balance by the appropriate
share of any such losses occurring during the month preceding the month of such
Distribution Date and, accordingly, will be taken into account in determining
the distributions of principal and interest on the Pool 2 Certificates (or the
calculation of the Accrual Amount for the Class 2-A7 and Class 2-A8
Certificates) commencing on the following Distribution Date, except that the
aggregate amount of the principal portion of any Realized Losses (other than
Excess Losses and Debt Service Reductions) to be allocated to the Class 2-PO
Certificates on any Distribution Date through the Pool 2 Cross-Over Date will
also be taken into account in determining distributions in respect of the Class
2-PO Deferred Amount for such Distribution Date. For purposes of allocating the
principal portion of Realized Losses (including Excess Losses), the Class
Certificate Principal Balance of the Class 2-A7 and Class 2-A8 Certificates will
be deemed to equal the lesser of (i) the original Class Certificate Principal
Balance of such Class (reduced by any Realized Losses previously allocated to
such Class) and (ii) the outstanding Class Certificate Principal Balance of such
Class.
 
     The interest portion of all Realized Losses in respect of the Pool 2
Mortgage Loans will be allocated among the outstanding Classes of Pool 2
Certificates offered hereby to the extent described under '--Distributions on
the Pool 2 Certificates--Interest' above. For purposes of making certain
calculations under the Agreement, the
 
                                     A2-13

<PAGE>

interest portion of any Realized Loss in respect of a Pool 2 Mortgage Loan will
be allocated among the Base Servicing Fee, the Supplemental Servicing Fee and
interest at the excess of the Mortgage Rate over the sum of the Base Servicing
Fee and the Supplemental Servicing Fee in proportion to the amount of accrued
interest in respect of such Pool 2 Mortgage Loan that would have been so
allocated in the absence of any such shortfall.
 
     The applicable Non-PO Percentage of any Deficient Valuation in respect of a
Pool 2 Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 2 Junior Certificates until the Pool 2 Bankruptcy Coverage
Termination Date. The 'Pool 2 Bankruptcy Coverage Termination Date' is the
Distribution Date upon which the Pool 2 Bankruptcy Loss Amount has been reduced
to zero or a negative number (or the Pool 2 Cross-Over Date, if earlier). On
each Distribution Date, the 'Pool 2 Bankruptcy Loss Amount' will equal
approximately $100,000 (approximately 0.05% of the aggregate Scheduled Principal
Balances of the Pool 2 Mortgage Loans as of the Cut-off Date), subject to
reduction as described in the Agreement, minus the aggregate amount of previous
Bankruptcy Losses in respect of the Pool 2 Mortgage Loans. The Pool 2 Bankruptcy
Loss Amount and the manner of reduction thereof described in the Agreement may
be reduced or modified upon written confirmation from Fitch and S&P (each as
defined herein) to the effect that such reduction or modification will not
adversely affect the then current ratings of the Pool 2 Senior Certificates by
Fitch and S&P. Such reduction may adversely affect the coverage provided by
subordination with respect to Bankruptcy Losses in respect of the Pool 2
Mortgage Loans.
 
     The applicable Non-PO Percentage of any Fraud Loss in respect of a Pool 2
Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 2 Junior Certificates until the Pool 2 Fraud Coverage
Termination Date. The 'Pool 2 Fraud Coverage Termination Date' is the
Distribution Date upon which the Fraud Loss Amount has been reduced to zero or a
negative number (or the Pool 2 Cross-Over Date, if earlier). Upon the initial
issuance of the Certificates, the 'Pool 2 Fraud Loss Amount' will equal
approximately $2,002,223 (approximately 1.0% of the aggregate Scheduled
Principal Balances of the Pool 2 Mortgage Loans as of the Cut-off Date). As of
any Distribution Date prior to the first anniversary of the Cut-off Date, the
Pool 2 Fraud Loss Amount will equal approximately $2,002,223, minus the
aggregate amount of Fraud Losses that would have been allocated to the Pool 2
Junior Certificates in the absence of the Pool 2 Loss Allocation Limitation
since the Cut-off Date. As of any Distribution Date from the first to the fifth
anniversaries of the Cut-off Date, the Pool 2 Fraud Loss Amount will equal (1)
the lesser of (a) the Pool 2 Fraud Loss Amount as of the most recent anniversary
of the Cut-off Date and (b) 1% (from the first to but excluding the third
anniversaries of the Cut-off Date) or 0.5% (from and including the third to but
excluding the fifth anniversaries of the Cut-off Date) of the aggregate
outstanding principal balance of all of the Pool 2 Mortgage Loans as of the most
recent anniversary of the Cut-off Date minus (2) the Fraud Losses that would
have been allocated to the Pool 2 Junior Certificates in the absence of the Pool
2 Loss Allocation Limitation since the most recent anniversary of the Cut-off
Date. As of any Distribution Date on or after the fifth anniversary of the
Cut-off Date, the Pool 2 Fraud Loss Amount shall be zero.
 
     The applicable Non-PO Percentage of any Special Hazard Loss in respect of a
Pool 2 Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 2 Junior Certificates until the Pool 2 Special Hazard
Termination Date. The 'Pool 2 Special Hazard Termination Date' is the
Distribution Date upon which the Pool 2 Special Hazard Loss Amount has been
reduced to zero or a negative number (or the Pool 2 Cross-Over Date, if
earlier). Upon the initial issuance of the Certificates, the 'Pool 2 Special
Hazard Loss Amount' will equal approximately $3,003,335 (approximately 1.5% of
the aggregate Scheduled Principal Balances of the Pool 2 Mortgage Loans as of
the Cut-off Date). As of any Distribution Date, the Pool 2 Special Hazard Loss
Amount will equal approximately $3,003,335 minus the sum of (i) the aggregate
amount of Special Hazard Losses that would have been previously allocated to the
Pool 2 Junior Certificates in the absence of the Pool 2 Loss Allocation
Limitation and (ii) the Pool 2 Adjustment Amount. For each anniversary of the
Cut-off Date, the 'Pool 2 Adjustment Amount' shall be equal to the amount, if
any, by which the Pool 2 Special Hazard Loss Amount (without giving effect to
the deduction of the Pool 2 Adjustment Amount for such anniversary) exceeds the
lesser of (A) an amount calculated by the Company and approved by each of Fitch
and S&P, which amount shall not be less than $500,000, and (B) the greater of
(x) 1% (or if greater than 1%, the highest percentage of Pool 2 Mortgage Loans
by principal balance secured by Mortgaged Properties in any California zip code)
of the outstanding principal balance of all the Pool 2 Mortgage Loans on the
Distribution Date immediately preceding such anniversary and (y) twice the
outstanding principal balance of the Pool 2 Mortgage Loan which has the largest
outstanding principal balance on the Distribution Date immediately preceding
such anniversary.
 
                                     A2-14

<PAGE>

             POOL 2 YIELD AND WEIGHTED AVERAGE LIFE CONSIDERATIONS
 
YIELD
 
     The effective yields on the Pool 2 Certificates will depend upon, among
other things, the price at which such Certificates are purchased and the rate
and timing of payments of principal (including both scheduled and unscheduled
payments) of the Pool 2 Mortgage Loans.
 
     The yields to investors will be sensitive in varying degrees to the rate of
prepayments on the Pool 2 Mortgage Loans. The extent to which the yield to
maturity of a Certificate is sensitive to prepayments will depend upon the
degree to which it is purchased at a discount or premium. In the case of
Certificates purchased at a premium, and especially in the case of the Class
2-A3 Certificates, faster than anticipated rates of principal payments on the
Mortgage Loans in Pool 2 could result in actual yields to investors in such
Certificates that are lower than the anticipated yields. In the case of
Certificates purchased at a discount (especially the Class 2-A7 and Class 2-A8
Certificates), slower than anticipated rates of principal payments on the
Mortgage Loans in Pool 2 could result in actual yields to investors in such
Certificates that are lower than the anticipated yields.
 
     Rapid rates of prepayments on the Pool 2 Mortgage Loans are likely to
coincide with periods of low prevailing interest rates. During such periods, the
yields at which an investor in the Pool 2 Certificates may be able to reinvest
amounts received as payments on the investor's Certificates may be lower than
the yield on such Certificates. Conversely, slow rates of prepayments on the
Pool 2 Mortgage Loans are likely to coincide with periods of high prevailing
interest rates. During such periods, the amount of payments available to an
investor for reinvestment at such high rates may be relatively low.
 
     The Pool 2 Mortgage Loans will not prepay at any constant rate, nor will
all of the Pool 2 Mortgage Loans prepay at the same rate at any one time. The
timing of changes in the rate of prepayments may affect the actual yield to an
investor, even if the average rate of principal prepayments is consistent with
the investor's expectation. In general, the earlier a prepayment of principal on
a Pool 2 Mortgage Loan, the greater the effect on the yield to an investor in
the Pool 2 Certificates. As a result, the effect on the yield of principal
prepayments on the Pool 2 Mortgage Loans occurring at a rate higher (or lower)
than the rate anticipated by the investor during the period immediately
following the issuance of the Pool 2 Certificates is not likely to be offset by
a later equivalent reduction (or increase) in the rate of principal prepayments.
 
     The entire amount of the applicable Non-PO Percentage of any principal
prepayments (including scheduled payments and certain other unscheduled
recoveries of principal) with respect to a Pool 2 Mortgage Loan allocable to the
Pool 2 Senior Certificates will be allocated solely to the outstanding Pool 2
Group I Senior Certificates during the first five years after the Cut-off Date
(except as otherwise described herein on or following the Pool 2 Group I Final
Distribution Date), with such allocation being subject to reduction thereafter
as described herein, provided that such amounts will be allocated pro rata among
all Pool 2 Senior Certificates (other than the Class 2-A3 and Class 2-PO
Certificates) on each Distribution Date after the Pool 2 Cross-Over Date. This
allocation between the Pool 2 Group I Senior Certificates and the Pool 2 Group
II Senior Certificates is designed to accelerate the allocation of principal
payments, prepayments and certain other unscheduled recoveries on the Pool 2
Mortgage Loans to holders of the Pool 2 Group I Senior Certificates relative to
that of the Pool 2 Group II Senior Certificates through the Pool 2 Cross-Over
Date.
 
     The Pool 2 Mortgage Loans will bear interest at fixed Mortgage Rates,
payable in arrears. Each monthly interest payment on a Mortgage Loan is
calculated as 1/12th of the applicable Mortgage Rate multiplied by the
outstanding principal balance of such Mortgage Loan on the first day of the
month.
 
     The effective yield to holders of Pool 2 Certificates offered hereby (other
than the Class 2-A4, Class 2-A5 and Class 2-A6 Certificates) will be lower than
the yield otherwise produced by the applicable Certificate Interest Rate and the
applicable purchase prices thereof because, while interest will accrue from the
first day of each month, the distribution of such interest will not be made
until the 25th day (or if such day is not a business day, the immediately
following business day) of the month following the month of accrual. In
addition, the effective yield on the Pool 2 Certificates will be affected by any
Net Interest Shortfall and the interest portion of certain losses in respect of
Pool 2. See 'Pool 2 Annex--Distributions on the Pool 2 Certificates' and
'--Allocation of Realized Losses on the Pool 2 Certificates' herein.
 
                                     A2-15
<PAGE>

PREPAYMENTS
 
     The rate of distribution of principal of the Pool 2 Certificates (and the
aggregate amount of interest distributable on the Class 2-A3 Certificates) will
be affected primarily by the amount and timing of principal payments received on
or in respect of the Pool 2 Mortgage Loans. Such principal payments will include
scheduled payments as well as voluntary prepayments by borrowers (such as, for
example, prepayments in full due to refinancings, including refinancings made by
the Company in the ordinary course of conducting its mortgage banking business,
some of which refinancings may be solicited by the Company, or prepayments in
connection with biweekly payment programs, participation in which may be
solicited by the Company) and prepayments resulting from foreclosure,
condemnation and other dispositions of the Pool 2 Mortgaged Properties, from
repurchase by the Company of any Mortgage Loan as to which there has been a
material breach of warranty or defect in documentation (or deposit of certain
amounts in respect of delivery of a substitute Mortgage Loan therefor), and from
an exercise by the Company of its option to repurchase a Defaulted Mortgage
Loan. See the last two paragraphs of 'The Pool 2 Mortgage Loans,' above and
'Yield Maturity and Weighted Average Life Considerations' in the Prospectus.
Mortgagors are permitted to prepay the Pool 2 Mortgage Loans, in whole or in
part, at any time without penalty. In addition, as a result of the fact that
Pool 2 Certificateholders (other than holders of the Class 2-A3 Certificates)
will be entitled on any Distribution Date to receive from the Pool 2 Available
Funds distributions of amounts pursuant to clause (iv) of each of the
definitions of the Pool 2 Senior Optimal Principal Amount, Class 2-PO Principal
Distribution Amount or Pool 2 Junior Optimal Principal Amount, the occurrence of
defaults on the Pool 2 Mortgage Loans may produce the same effect on the Pool 2
Certificates receiving such distributions as an early receipt of principal.
 
     A number of social, economic, tax, geographic, demographic, legal and other
factors may influence prepayments of the Mortgage Loans. These factors may
include the age of such Mortgage Loans, the geographic distribution of the
Mortgaged Properties, the payment terms of such Mortgage Loans, the
characteristics of the borrowers, homeowner mobility, economic conditions
generally and in the geographic area in which the Mortgaged Properties are
located, enforceability of due-on-sale clauses, prevailing interest rates in
relation to the interest rates on such Mortgage Loans, the availability of
mortgage funds, the use of second or 'home equity' mortgage loans by mortgagors,
the use of the properties as second or vacation homes, the extent of the
mortgagors' net equity in the Mortgaged Properties, tax-related considerations
and, where investment properties are securing such Mortgage Loans, the
availability of other investments. The rate of principal payment may also be
subject to seasonal variations.
 
     The rate of principal prepayments on pools of conventional mortgage loans
has fluctuated significantly in recent years. Generally, if prevailing interest
rates were to fall significantly below the interest rates on the Pool 2 Mortgage
Loans, such Mortgage Loans would be expected to prepay at higher rates than if
prevailing rates were to remain at or above the interest rates on such Mortgage
Loans. Conversely, if interest rates were to rise significantly above the
interest rates on the Pool 2 Mortgage Loans, such Mortgage Loans would be
expected to prepay at lower rates than if prevailing rates were to remain at or
below the interest rates on such Mortgage Loans.
 
     Voluntary prepayments in full of principal on the Pool 2 Mortgage Loans
received by the Company (or, in the case of Mortgage Loans master-serviced by
the Company, of which the Company receives notice) from the first day through
the fifteenth day of each month (other than the month of the Cut-off Date) are
passed through to the Pool 2 Certificateholders in the month of receipt or
payment. Voluntary prepayments of principal in full received from the sixteenth
day (or, in the case of the month of the Cut-off Date, from the Cut-off Date)
through the last day of each month, and all voluntary partial prepayments of
principal on the Pool 2 Mortgage Loans are passed through to the Pool 2
Certificateholders in the month following the month of receipt or payment. Any
prepayment or liquidation of a Pool 2 Mortgage Loan (by foreclosure proceedings
or by virtue of the purchase of a Pool 2 Mortgage Loan in advance of its stated
maturity as required or permitted by the Agreement) will generally have the
effect of passing through to the Pool 2 Certificateholders principal amounts
(or, in the case of the Class 2-A3 Certificates, reducing the Notional Principal
Balance thereof) which would otherwise be passed through in amortized increments
over the remaining term of such Mortgage Loan.
 
     The entire amount of the applicable Non-PO Percentage of any prepayment and
unscheduled recovery of principal with respect to a Pool 2 Mortgage Loan will be
allocated solely to the outstanding Pool 2 Senior Certificates (other than the
Class 2-A3 Certificates, the Class 2-PO Certificates and the Pool 2 Group II
Senior
 
                                     A2-16
<PAGE>

Certificates, as described herein) during the first five years after the Cut-off
Date (with such allocation being subject to reduction thereafter as described
herein), except as otherwise described herein on or following the Pool 2 Senior
Final Distribution Date. Among such Pool 2 Senior Certificates, such amounts
will be allocated in the manner described herein. See 'Pool 2
Annex--Distributions on the Pool 2 Certificates--Principal' herein.
 
     When a full prepayment is made on a Mortgage Loan in a Mortgage Pool, the
Mortgagor is charged interest ('Prepayment Interest') on the days in the month
actually elapsed up to the date of such prepayment, at a daily interest rate
(determined by dividing the Mortgage Rate by 360) which is applied to the
principal amount of the loan so prepaid. When such a prepayment is made during
the period from the sixteenth day through the last day of any month (and from
the Cut-off Date through the fifteenth day of the month of the Cut-off Date),
such Prepayment Interest (net of Servicing Fees) is passed through to the Pool 2
Certificateholders in the month following its receipt and the amount of interest
thus distributed to Certificateholders, to the extent not offset by a related
Compensating Interest Payment (as defined herein), will be less than the amount
which would have been distributed (or added to the Class Certificate Principal
Balances of the Class 2-A7 and Class 2-A8 Certificates) in the absence of such
prepayment. The payment of a claim under certain insurance policies or the
purchase of a defaulted Pool 2 Mortgage Loan by a private mortgage insurer may
also cause a reduction in the amount of interest passed through. Shortfalls in
respect of Pool 2 described in this paragraph will be borne by the Pool 2
Certificateholders to the extent described herein. See 'Pool 1
Annex--Distributions on the Pool 1 Certificates-- Interest' and 'Pool 2
Annex--Distributions on the Pool 2 Certificates--Interest' herein.
 
     Any partial prepayment will be applied to the balance of the related Pool 2
Mortgage Loans as of the first day of the month of receipt, will be passed
through to the Pool 2 Certificateholders in the following month and, to the
extent not offset by a related Compensating Interest Payment, will reduce the
aggregate amount of interest distributable to such Certificateholders in such
month in an amount equal to 30 days of interest at the related Net Mortgage Rate
on the amount of such prepayment.
 
     The yield on certain Classes of the Pool 2 Certificates also may be
affected by any repurchase by the Company of the Pool 2 Mortgage Loans as
described under 'The Pooling and Servicing Agreement-- Termination' herein.
 
SENSITIVITY OF THE CLASS 2-A3 CERTIFICATES
 
     The yield to investors in the Class 2-A3 Certificates will be highly
sensitive to the rate of principal prepayments of the Pool 2 Mortgage Loans.
Investors in the Class 2-A3 Certificates should consider the associated risks,
including the risk that faster than anticipated rates of principal prepayments
on Pool 2 Mortgage Loans could result in actual yields to investors that are
significantly lower than anticipated yields or the failure of such investors to
fuly recover their investments. The Notional Principal Balance of the Class 2-A3
Certificates at any time will be determined by reference to the Class
Certificate Principal Balances of the Class 2-A1 and Class 2-A2 Certificates (as
described herein).
 
     To illustrate the significance of prepayments on the distributions on the
Class 2-A3 Certificates, the following table indicates the pre-tax yields to
maturity (on a corporate bond equivalent basis) under the specified assumptions
at the different constant percentages of the Prepayment Assumption shown. The
yields were calculated by determining the applicable monthly discount rate
which, when applied to the related assumed stream of cash flows to be paid on
the Class 2-A3 Certificates, would cause the discounted present value of such
cash flows to equal the assumed purchase price for such Certificates stated in
such table and converting the applicable monthly discount rate to a corporate
bond equivalent rate. Implicit in the use of any discounted present value or
internal rate of return calculations such as these is the assumption that
intermediate cash flows are reinvested at the discount rate or internal rate of
return. Thus, these calculations do not take into account the different interest
rates at which investors may be able to reinvest funds received by them as
distributions on such Certificates and, consequently, do not reflect the return
on any investment when such reinvestment rates are considered. It is unlikely
that the Pool 2 Mortgage Loans will prepay at any of the constant levels of the
Prepayment Assumption shown or any other constant rate until maturity or that
all of the Pool 2 Mortgage Loans will prepay at the same rate. The timing of
changes in the rate of prepayments may significantly affect the total
distributions received, the date of receipt of such distributions and the actual
yield to maturity to any investor, even if the average rate of principal
prepayments is consistent with an investor's expectation. In general, the
earlier the payment of principal of the Pool 2 Mortgage Loans, the greater the
effect on an investor's yield to maturity. As a result, the effect of an
investor's yield of principal prepayments occurring at a rate higher (or
 
                                     A2-17
<PAGE>

lower) than the rate anticipated by the investor during the period immediately
following the issuance of the Certificates will not be equally offset by a
subsequent like reduction (or increase) in the rate of principal prepayments.
 
     The following table has been prepared based on the Pool 2 Modeling
Assumptions (as defined herein) and the additional assumptions that (i) the
assumed purchase price of the Class 2-A3 Certificates is equal to the sum of (a)
the product of (i) the Notional Principal Balance for such Class (as set forth
on the cover of this Prospectus Supplement) and (ii) the percentage specified in
the table below, and (b) the amount of accrued interest on the Class 2-A3
Certificates from the Cut-off Date to the Closing Date and (ii) such purchase
price is paid on July 30, 1998.
 
           PRE-TAX YIELD* TO MATURITY OF THE CLASS 2-A3 CERTIFICATES
                   (ASSUMED PURCHASE PRICE PERCENTAGE = 18%)
                             PREPAYMENT ASSUMPTION
 
<TABLE>
<CAPTION>
- -------------------------------------------------------
  0%         100%        275%        400%        500%
- -------     -------     -------     -------     -------
<S>         <C>         <C>         <C>         <C>
36.789%     19.809%     19.809%     19.809%     16.190%
</TABLE>
 
- ------------------
* Corporate bond equivalent basis
 
     The preceding table does not take into account the effect of Interest
Shortfalls. The Pool 2 Mortgage Loans will not necessarily have all of the
characteristics assumed and there can be no assurance that (i) the Pool 2
Mortgage Loans will prepay at any of the constant rates shown in the table or at
any particular rate, (ii) the pre-tax yields to maturity on the Class 2-A3
Certificates will correspond to any of the amounts shown herein or (iii) the
purchase price of the Class 2-A3 Certificates will be as assumed. The table does
not constitute a representation as to the rate of prepayments on the Pool 2
Mortgage Loans. Each investor must make its own decision as to the appropriate
prepayment assumption to be used in deciding whether or not to purchase a Class
2-A3 Certificate.
 
SENSITIVITY OF THE CLASS 2-A4, CLASS 2-A5 AND CLASS 2-A6 CERTIFICATES
 
     The yield to investors in the Class 2-A4, Class 2-A5 and Class 2-A6
Certificates will be highly sensitive to the level of LIBOR. Investors in the
Class 2-A4 Certificates should consider (i) the risk that lower than anticipated
levels of LIBOR could result in actual yields that are lower than anticipated
yields on such Certificates and (ii) the fact that the Certificate Interest Rate
on the Class 2-A4 Certificates cannot exceed 8.50% (which would occur whenever
LIBOR equals or exceeds 8.00% for any relevant Interest Accrual Period other
than the first such period). Conversely, investors in the Class 2-A5 and Class
2-A6 Certificates should consider (i) the risk that higher than anticipated
levels of LIBOR could result in actual yields that are lower than anticipated
yields on such Certificates and (ii) the fact that the rate of interest on each
of the Class 2-A5 and Class 2-A6 Certificates can fall as low as 0.0% (which
will occur whenever LIBOR equals or exceeds 7.50%, in the case of the Class 2-A5
Certificates, and 8.00% in the case of the Class 2-A6 Certificates, for any
relevant Interest Accrual Period other than the first such period).
 
     Levels of LIBOR may have little or no correlation to levels of prevailing
mortage interest rates. It is possible that lower prevailing mortgage interest
rates, which might be expected to result in faster prepayments, could occur
concurrently with an increased level of LIBOR. Conversely, higher prevailing
mortgage interest rates, which might be expected to result in slower
prepayments, could occur concurrently with a decreased level of LIBOR. In
addition, the timing of changes in the level of LIBOR may affect the actual
yield to maturity to an investor in the Class 2-A4, Class 2-A5 and Class 2-A6
Certificates even if the average level is consistent with such investor's
expectation. In general, the earlier a change in the level of LIBOR, the greater
the effect on such investor's yield to maturity. As a result, the effect on such
investor's yield to maturity of a level of LIBOR that is higher (or lower) than
the rate anticipated by such investor during the period immediately following
the issuance of the Certificates is not likely to be offset by a subsequent like
reduction (or increase) in the level of LIBOR.
 
     To illustrate the significance of prepayments and of changes in LIBOR on
the distributions on the Class 2-A5 and Class 2-A6 Certificates, the following
tables indicate the pre-tax yields to maturity (on a corporate bond equivalent
basis) under the specified assumptions at the different constant percentages of
the Prepayment Assumption (as defined herein) and the different levels of LIBOR
indicated. The yields were calculated by determining the applicable monthly
discount rate which, when applied to the related assumed
 
                                     A2-18
<PAGE>

stream of cash flows to be paid on the Class 2-A5 and Class 2-A6 Certificates,
would cause the discounted present value of such cash flows to equal the assumed
purchase price for such Certificates stated in such table and converting the
applicable monthly discount rate to a corporate bond equivalent rate. Implicit
in the use of any discounted present value or internal rate of return
calculations such as these is the assumption that intermediate cash flows are
reinvested at the discount rate or internal rate of return. Thus, these
calculations do not take into account the different interest rates at which
investors may be able to reinvest funds received by them as distributions on the
Class 2-A5 and Class 2-A6 Certificates, and, consequently, do not reflect the
return on any investment when such reinvestment rates are considered. It is not
likely that the Mortgage Loans will prepay at a constant level of the Prepayment
Assumption until maturity, that all of the Mortgage Loans will prepay at the
same rate or that LIBOR will not vary. The timing of changes in the rate of the
prepayments may significantly affect the total distributions received, the date
of receipt of such distributions and the actual yield to maturity to any
investor, even if the average rate of principal prepayments is consistent with
an investor's expectation. In general, the earlier the payment of principal of
the Mortgage Loans, the greater the effect on an investor's yield to maturity.
As a result, the effect on an investor's yield of principal prepayments
occurring at a higher rate (or lower) than the rate anticipated by the investor
during the period immediately following the issuance of the Certificates will
not be equally offset by a subsequent like reduction (or increase) in the rate
of principal prepayments. Moreover, as noted above, the timing of changes in the
level of LIBOR may affect the actual yield to maturity to an investor in a Class
2-A5 or Class 2-A6 Certificate.
 
     The following tables have been prepared based on the Modeling Assumptions
(as defined herein) and the additional assumptions that (i) the respective
assumed purchase prices of the Class 2-A5 and Class 2-A6 Certificates are equal
to the sum of (a) the product of (i) the Class Certificate Principal Balance for
the related Class (as set forth on the cover of this Prospectus Supplement) and
(ii) the percentage specified in the table below, and (b) the amount of accrued
interest on the related Certificates from July 25, 1998 to the Closing Date and
(ii) on the LIBOR Determination Date occurring in August 1998 and on each LIBOR
Determination Date thereafter, LIBOR is the level specified.
 
            PRE-TAX YIELD TO MATURITY OF THE CLASS 2-A5 CERTIFICATES
                  (ASSUMED PURCHASE PRICE PERCENTAGE = 97.50%)
 
<TABLE>
<CAPTION>
LEVELS OF LIBOR                   0%         100%        275%        400%        500%
- ----------------------------   --------    --------    --------    --------    --------
<S>                            <C>         <C>         <C>         <C>         <C>
3.65000%....................    21.262%     21.304%     21.539%     21.836%     22.033%
5.65000%....................    10.108%     10.184%     10.479%     10.935%     11.219%
7.50000% and above..........     0.151%      0.249%      0.544%      1.165%      1.537%
</TABLE>
 
- ------------------
* Corporate bond equivalent basis
 
            PRE-TAX YIELD TO MATURITY OF THE CLASS 2A-6 CERTIFICATES
                  (ASSUMED PURCHASE PRICE PERCENTAGE = 98.50%)
 
<TABLE>
<CAPTION>
LEVELS OF LIBOR                   0%         100%        275%        400%        500%
- ----------------------------   --------    --------    --------    --------    --------
<S>                            <C>         <C>         <C>         <C>         <C>
3.65000%....................     7.772%      7.819%      7.987%      8.264%      8.434%
5.65000%....................     7.772%      7.819%      7.987%      8.264%      8.434%
7.65000%....................     5.446%      5.499%      5.676%      5.987%      6.176%
8.00000% and above..........     0.096%      0.158%      0.344%      0.737%      0.973%
</TABLE>
 
- ------------------
* Corporate bond equivalent basis
 
     The preceding tables to not take into account the effect of Interest
Shortfalls. The Mortgage Loans will not have all of the characteristics assumed
and there can be no assurance (i) that the Mortgage Loans will prepay at any of
the constant rates shown in the tables or at any particular rate, (ii) that the
pre-tax yields to maturity on the Class 2-A5 or Class 2-A6 Certificates will
correspond to any of the amounts shown herein, (iii) that the levels of LIBOR
will correspond to the levels shown herein or (iv) that the respective purchase
prices of the Class 2-A5 or Class 2-A6 Certificates will be as assumed. The
tables do not constitute a representation as to the correlation of any level of
LIBOR and the rate of prepayments on the Mortgage Loans. Each investor must make
its own decision as to the appropriate prepayment assumptions to be used and the
appropriate levels of LIBOR to be assumed in deciding whether or not to purchase
a Class 2-A5 or Class 2-A6 Certificate.
 
                                     A2-19
<PAGE>

THE CLASS 2-M, CLASS 2-B1 AND CLASS 2-B2 CERTIFICATES
 
     The rate of payment of principal, the aggregate amount of distributions and
the yield to maturity of the Class 2-M, Class 2-B1 and Class 2-B2 Certificates
will be affected by the rate of prepayments on the Pool 2 Mortgage Loans, as
well as the rate of mortgagor defaults resulting in Realized Losses in respect
of such Mortgage Loans, by the severity of those losses and by the timing
thereof. See 'Pool 2 Annex--Allocation of Realized Losses on the Pool 2
Certificates' herein for a description of the manner in which such losses are
borne by the holders of the Pool 2 Certificates. If the purchaser of a Class
2-M, Class 2-B1 or Class 2-B2 Certificate calculates its anticipated yield based
on an assumed rate of default and amount of Realized Losses in respect of the
related Mortgage Loans that is lower than the default rate and the amount of
losses actually incurred, its actual yield to maturity may be lower than that so
calculated and could be negative. The timing of defaults and losses will also
affect an investor's actual yield to maturity, even if the average rate of
defaults and severity of losses are consistent with an investor's expectations.
In general, the earlier a loss occurs, the greater the effect on an investor's
yield to maturity.
 
     The yields to maturity on the Classes of Class 2-B Certificates with higher
numerical designations will be more sensitive to losses due to liquidations of
defaulted Pool 2 Mortgage Loans than will the yields on such Classes with lower
numerical designations, and the yields to maturity on all of the Class 2-B
Certificates will be more sensitive to such losses than will the yields on the
other Classes of related Certificates. The yields to maturity on the Class 2-M
Certificates will be more sensitive to such losses than will the yields on the
Pool 2 Senior Certificates and less sensitive than the yields on the Class 2-B
Certificates. The Pool 2 Junior Certificates will be more sensitive to losses
due to liquidations of defaulted Pool 2 Mortgage Loans because the entire amount
of such losses will be allocable to such Certificates in inverse order of
priority, either directly or through the allocation of the Class 2-PO Deferred
Payment Writedown Amount, except as provided herein. To the extent not covered
by the Company's advances of delinquent monthly payments of principal and
interest, delinquencies on the Pool 2 Mortgage Loans may also have a relatively
greater effect (i) on the yields to investors in the related Class 2-B
Certificates with higher numerical designations than on the yields to investors
in those related Class 2-B Certificates with lower numerical designations, (ii)
on the yields to investors in the related Class 2-B Certificates than on the
yields to investors in the other Classes of related Certificates, and (iii) on
the yields to investors in the Class 2-M Certificates than on the yields to
investors in the related Senior Certificates. As described above under 'Pool 2
Annex--Distributions on the Pool 2 Certificates--Interest' and '--Principal,'
'--Allocation of Realized Losses on the Pool 2 Certificates' and
'--Subordination,' amounts otherwise distributable to holders of any Class of
Pool 2 Class B Certificates will be made available to protect the holders of the
more senior ranking Classes of Pool 2 Certificates against interruptions in
distributions due to certain mortgagor delinquencies. Amounts otherwise
distributable to holders of the Class 2-M Certificates will be made available to
protect the holders of the Pool 2 Senior Certificates against interruptions in
distributions due to certain mortgagor delinquencies. Such delinquencies, even
if subsequently cured, may affect the timing of the receipt of distributions by
the holders of such Junior Certificates.
 
     To the extent that the Class 2-M, Class 2-B1 or Class 2-B2 Certificates are
being purchased at discounts from their initial Class Certificate Principal
Balances, if the purchaser of such a Certificate calculates its yield to
maturity based on an assumed rate of payment of principal faster than that
actually received on such Certificate, its actual yield to maturity may be lower
than that so calculated.
 
FINAL PAYMENT CONSIDERATIONS
 
     The rate of payment of principal of the Pool 2 Certificates will depend on
the rate of payment of principal of the related Mortgage Loans (including
prepayments, defaults, delinquencies and liquidations) which, in turn, will
depend on the characteristics of such Mortgage Loans, the level of prevailing
interest rates and other economic, geographic, social and other factors, and no
assurance can be given as to the actual payment experience. As of the Cut-off
Date, the month and year of the latest scheduled maturity of a Mortgage Loan in
Pool 2 is expected to be June 2028. In addition, to the extent delinquencies and
defaults are not covered by advances made by the Company or offset by the effect
of the subordination of the related Junior Certificates, delinquencies and
defaults could affect the actual maturity of the Certificates offered hereby.
 
                                     A2-20
<PAGE>

WEIGHTED AVERAGE LIVES OF THE POOL 2 CERTIFICATES
 
     The weighted average life of a Certificate is determined by (a) multiplying
the reduction, if any, in the Certificate Principal Balance thereof on each
Distribution Date by the number of years from the date of issuance to such
Distribution Date, (b) summing the results and (c) dividing the sum by the
aggregate reductions in the Certificate Principal Balance of such Certificate.
 
     The weighted average lives of the Pool 2 Certificates will be affected, to
varying degrees, by the rate of principal payments on the Pool 2 Mortgage Loans,
the timing of changes in such rate of payments and the priority sequence of
distributions of principal of such Certificates. The interaction of the
foregoing factors may have different effects on the various Classes of the
Certificates and the effects on any Class may vary at different times during the
life of such Class. Further, to the extent the prices of Classes of Certificates
represent discounts or premiums to their respective original Class Certificate
Principal Balances, variability in the weighted average lives of such Classes of
Certificates could result in variability in the related yields to maturity.
 
     Prepayments on mortgage loans are commonly measured relative to a
prepayment standard or model. The model used in this Prospectus Supplement (the
'Prepayment Assumption') represents an assumed rate of prepayment each month
relative to the then outstanding principal balance of a pool of mortgage loans.
The Prepayment Assumption does not purport to be either a historical description
of the prepayment experience of any pool of mortgage loans or a prediction of
the anticipated rate of prepayment of any pool of mortgage loans, including the
Mortgage Loans in either Mortgage Pool. A prepayment assumption of 100% of the
Prepayment Assumption assumes prepayment rates of 0.2% per annum of the then
outstanding principal balance of such mortgage loans in the first month of the
life of the mortgage loans and increasing by 0.2% per annum in each month
thereafter until the thirtieth month. Beginning in the thirtieth month and in
each month thereafter during the life of the mortgage loans, 100% of the
Prepayment Assumption assumes a constant prepayment rate of 6.0% per annum.
 
     Pool 2 PAC Certificates.  The PAC Balances schedules set forth in the Pool
2 PAC Balances Table hereto for the Class 2-A1 and Class 2-A2 Certificates
(together, the 'Pool 2 PAC Certificates'), were prepared by calculating the
amounts that would be available for payments on the Pool 2 PAC Certificates
using, among other things, the Pool 2 Modeling Assumptions (as defined below)
and a range of constant mortgage loan prepayment rates (the 'Structuring
Range'), expressed as a percentage of the Prepayment Assumption, and on the
basis of the actual characteristics of the Pool 2 Mortgage Loans expected to be
included in the related Mortgage Pool. The Structuring Range for the Pool 2 PAC
Certificates is 100% through 400% of the Prepayment Assumption. However, because
the actual characteristics of the Pool 2 Mortgage Loans may differ from those
assumed in the Pool 2 Modeling Assumptions and because the Pool 2 Mortgage Loans
will not prepay at a constant rate or any other prescribed rate, it is not
likely that the Pool 2 PAC Certificates will pay down in accordance with their
PAC Balances schedules. The PAC Balances schedules for the Pool 2 PAC
Certificates are set forth in the Pool 2 PAC Balances Table attached to the Pool
2 Annex.
 
     Principal distributions on each Class of Pool 2 PAC Certificates are likely
to be relatively stable and in accordance with their respective PAC Balances
schedules so long as Pool 2 Mortgage Loan prepayments are neither too fast nor
too slow to support such schedules. Moreover, if the Pool 2 PAC Certificates
fall behind their schedules, they will have cumulative priority for future
principal distributions from amounts available for distribution of principal
among the Pool 2 Certificates. For each Class of Pool 2 PAC Certificates there
is a range of constant Mortgage prepayment rates (an 'Effective Range') at which
such Certificates would pay down in accordance with their PAC Balances
schedules. The initial Effective Range for the Pool 2 PAC Certificates may be
wider than the Structuring Range described above.
 
     The Effective Range for the Pool 2 PAC Certificates can narrow or 'shift'
upward or downward over time as a result of the rates of principal payments
actually experienced on the Pool 2 Mortgage Loans. Moreover, the Pool 2 Mortgage
Loans will not prepay at any constant rate and there can be no assurance that
the amount available for principal distributions on any Class of Pool 2 PAC
Certificates on any Distribution Date will be sufficient to reduce the Class
Certificate Principal Balance thereof to its PAC Balance. Non-constant
prepayment rates on the related Mortgage Loans can cause any Class of PAC
Certificates not to pay down in accordance with its PAC Balance schedule, even
if such rates remain within the initial Effective Range.
 
                                     A2-21

<PAGE>

     If the Pool 2 Mortgage Loans prepay at rates that are generally below the
Effective Range for the Pool 2 PAC Certificates, the amount available for
principal distributions thereon on any Distribution Date may be insufficient to
reduce the Certificate Principal Balance thereof to its PAC Balance, and the
weighted average life of such Certificates may be extended, perhaps
significantly. Conversely, if the Pool 2 Mortgage Loans prepay at rates that are
generally above the Effective Range of the Pool 2 PAC Certificates, the weighted
average life thereof may be shortened, perhaps significantly.
 
     The principal payment stability of the Pool 2 PAC Certificates will be
supported by the Class 2-A4, Class 2-A5, Class 2-A6, Class 2-A7 and Class 2-A8
Certificates. As a result, the Pool 2 PAC Certificates will be less sensitive to
Mortgage Loan prepayment rates than the Class 2-A4, Class 2-A5, Class 2-A6,
Class 2-A7 and Class 2-A8 Certificates. When the Certificate Principal Balances
of the Class 2-A4, Class 2-A5, Class 2A-6, Class 2A-7 and Class 2-A8
Certificates have been reduced to zero, the related Pool 2 PAC Certificates will
become more sensitive to Pool 2 Mortgage Loan prepayments.
 
     Pool 2 TAC Certificates.  Principal distributions on the Class 2-A4, Class
2-A5 and Class 2-A6 Certificates (the 'Pool 2 TAC Certificates') are expected to
be more stable than would be the case if the Pool 2 TAC Certificates were not
entitled to receive payments, to the extent of available principal, according to
their TAC Balances schedules. Based on the Pool 2 Modeling Assumptions, the Pool
2 TAC Certificates would pay down in accordance with their TAC Balances
schedules if the Pool 2 Mortgage Loans were to prepay at a constant rate of 125%
of the Prepayment Assumption until the Class Certificate Principal Balance
thereof has been reduced to zero. However, because the actual characteristics of
the Mortgage Loans in Pool 2 may differ from those assumed in the Pool 2
Modeling Assumptions, and because such Mortgage Loans will not prepay at a
constant rate of 125% of the Prepayment Assumption or any other prescribed
constant rate, it is not likely that the Pool 2 TAC Certificates will
consistently pay down in accordance with their TAC Balances schedules. The TAC
Balances schedules for the Pool 2 TAC Certificates are set forth in the Pool 2
TAC Balances Table attached to this Pool 2 Annex.
 
     The principal payment stability of the Pool 2 TAC Certificates will be
supported by the Class 2-A7 Certificates. When the Certificate Principal
Balances of the Class 2-A7 Certificates have been reduced to zero, the Pool 2
TAC Certificates, if then outstanding, will become more sensitive to Pool 1
Mortgage Loan prepayments.
 
     If the Pool 2 Mortgage Loans prepay at rates that are generally below 125%
of the Prepayment Assumption, the Pool 2 TAC Certificates will not be reduced to
their TAC Balances and the weighted average life of the Pool 2 TAC Certificates
may be extended, perhaps significantly. If the Pool 2 Mortgage Loans prepay at
rates that are generally above 125% of the Prepayment Assumption, the weighted
average life of the Pool 2 TAC Certificates may be shortened, perhaps
significantly.
 
     The entire Pool 2 Available Funds will be distributed monthly on each
Distribution Date and will not be retained for distribution on subsequent
Distribution Dates. Thus, the likelihood that the Pool 2 TAC Certificates will
pay down in accordance with their TAC Balances schedules will not be enhanced by
averaging high and low principal payments in different months.
 
     Pool 2 Support Certificates.  The Class 2-A4, Class 2-A5, Class 2-A6, Class
2-A7 and Class 2-A8 Certificates will support the principal payment stability of
the Pool 2 PAC Certificates. Additionally, the Class 2-A7 Certificates support
the principal payment stability of the Pool 2 TAC Certificates. As a result, the
weighted average lives of the Class 2-A4, Class 2-A5, Class 2-A6, Class 2-A7 and
Class 2-A8 Certificates will be more sensitive to Pool 2 Mortgage Loan
prepayments than those of the Pool 2 PAC Certificates, and the weighted average
life of the Pool 2 TAC Certificates will be more sensitive to Pool 2 Mortgage
Loan prepayments than that of the Pool 2 PAC Certificates, but less sensitive
than the weighted average lives of the Class 2-A7 Certificates. The Class 2-A4,
Class 2-A5, Class 2-A6, Class 2-A7 and Class 2-A8 Certificates may receive no
principal payments for extended periods of time or may receive principal
payments that vary widely from period to period. To the extent that a low rate
of principal payments on the Pool 2 Mortgage Loans results in related Available
Funds on any Distribution Date being equal to or less than the amount required
to be distributed as principal on the Pool 2 PAC and Pool 2 TAC Certificates in
accordance with the related PAC and TAC schedules, the Class 2-A4, Class 2-A5,
and Class 2-A6, Class 2-A7 and Class 2-A8 Certificates will receive no principal
on such Distribution Date. Further, to the extent that a low rate of principal
payments on the Pool 2 Mortgage Loans results in the remaining Available Funds
on any Distribution Date being less than the amount
 
                                     A2-22

<PAGE>

required to be distributed to the Pool 2 TAC Certificates, the Class 2A-7 and
Class 2-A8 Certificates will receive no principal on any such Distribution Date.
Conversely, to the extent that a high rate of principal payments results in Pool
2 Available Funds being in excess of such amounts, such excess will be applied,
to the extent of the Pool 2 Senior Optimal Principal Amount, to the related
Classes of Certificates until the Class Certificate Principal Balances thereof
have each been reduced to zero. Thus, a rapid rate of prepayments in respect of
the Pool 2 Mortgage Loans may significantly shorten the weighted average lives
of the Class 2-A4, Class 2-A5, Class 2-A6, Class 2-A7 and Class 2-A8
Certificates and a relatively slow rate of prepayments on such Mortgage Loans
may significantly extend the weighted average lives of the Class 2-A4, Class
2-A5, Class 2-A6, Class 2-A7 and Class 2-A8 Certificates.
 
     Tables of Pool 2 Class Certificate Principal Balances.  The following
tables set forth the percentages of the initial Class Certificate Principal
Balance of each Class of Pool 2 Certificates offered hereby that would be
outstanding after each of the dates shown at the specified constant percentages
of the Prepayment Assumption and the corresponding weighted average life of each
such Class of Pool 2 Certificates. The figures in the table are based on the
actual characteristics of the Pool 2 Mortgage Loans expected to be included in
Pool 2. The Pool 2 Mortgage Loans are expected to have a weighted average
Mortgage Rate of approximately 7.458% per annum and a weighted average scheduled
remaining term to maturity of approximately 358 months as of the Cut-Off Date,
with a weighted average Mortgage Loan age of approximately 1.76 months. In
addition, for purposes of calculations under the columns at the indicated
percentages of the Prepayment Assumption set forth in the tables, it is assumed
with respect to the Pool 2 Mortgage Loans (the 'Pool 2 Modeling Assumptions')
that (i) the distributions in respect of the Pool 2 Certificates are made and
received in cash on the 25th day of each month commencing in August 1998, (ii)
the Pool 2 Mortgage Loans prepay at the specified constant percentages of the
Prepayment Assumption, (iii) the aggregate outstanding principal balance of the
Pool 2 Mortgage Loans as of the Cut-off Date is $200,222,314, (iv) no defaults
or delinquencies in the payment by Mortgagors of principal of and interest on
the Pool 2 Mortgage Loans are experienced and the Company does not repurchase
any of the Pool 2 Mortgage Loans as permitted or required by the Agreement, (v)
the Company does not exercise its option to repurchase all the Mortgage Loans in
the Trust Fund as described under the caption 'The Pooling and Servicing
Agreement--Termination' herein, (vi) scheduled monthly payments on the Pool 2
Mortgage Loans are received on the first day of each month commencing in August
1998, and are computed prior to giving effect to prepayments received in the
prior month, (vii) prepayments representing payment in full of individual Pool 2
Mortgage Loans are received on the last day of each month (commencing in July
1998) and include 30 days' interest thereon, and no Interest Shortfalls occur in
respect of the Pool 2 Mortgage Loans, (viii) the scheduled monthly payment for
each Pool 2 Mortgage Loan has been calculated based on its outstanding balance,
interest rate and remaining term to maturity such that such Mortgage Loan will
amortize in amounts sufficient to repay the remaining balance of such Mortgage
Loan by its remaining term to maturity, (ix) the initial Class Certificate
Principal Balance and Certificate Interest Rate for each Class of Pool 2
Certificates offered hereby are as indicated on the cover page hereof, (x) the
date of the initial issuance of the Pool 2 Certificates is July 30, 1998, (xi)
the amounts distributable to Pool 2 Certificateholders are not reduced by the
incurrence of any expenses by the Trust Fund.
 
     It is not likely that the Pool 2 Mortgage Loans will prepay at a constant
level of the Prepayment Assumption. In addition, if the actual characteristics
of the Pool 2 Mortgage Loans included in Pool 2 differ from those used in
calculating the percentage set forth in the table, the actual Class Certificate
Principal Balance of each Class of Pool 2 Certificates outstanding at any time
and the actual weighted average life of each Class of Pool 2 Certificates would
differ (which difference could be material) from the corresponding information
in the tables for each indicated percentage of the Prepayment Assumption.
 
                                     A2-23

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 2 CERTIFICATES
<TABLE>
<CAPTION>
                                                                                                                     CLASS 2-A3
                                                      CLASS 2-A1                         CLASS 2-A2              ------------------
                                           --------------------------------   --------------------------------
                                                                                                                     PREPAYMENT
                                                PREPAYMENT ASSUMPTION              PREPAYMENT ASSUMPTION             ASSUMPTION
                                           --------------------------------   --------------------------------   ------------------
DISTRIBUTION DATE                           0%    100%   275%   400%   500%    0%    100%   275%   400%   500%    0%    100%   275%
- -----------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                        <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage.......................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 1999................................   100    99     99     99     99     100   100    100    100    100     100    99     99
July 2000................................    95    76     76     76     76     100   100    100    100    100      97    86     86
July 2001................................    90    46     46     46     46     100   100    100    100    100      94    69     69
July 2002................................    85    18     18     18     15     100   100    100    100    100      91    52     52
July 2003................................    79     0      0      0      0     100    83     83     83     36      88    35     35
July 2004................................    75     0      0      0      0     100    44     44     44      0      85    18     18
July 2005................................    70     0      0      0      0     100    14     14     14      0      82     6      6
July 2006................................    64     0      0      0      0     100     0      0      0      0      79     0      0
July 2007................................    58     0      0      0      0     100     0      0      0      0      76     0      0
July 2008................................    52     0      0      0      0     100     0      0      0      0      72     0      0
July 2009................................    45     0      0      0      0     100     0      0      0      0      68     0      0
July 2010................................    38     0      0      0      0     100     0      0      0      0      64     0      0
July 2011................................    30     0      0      0      0     100     0      0      0      0      60     0      0
July 2012................................    22     0      0      0      0     100     0      0      0      0      55     0      0
July 2013................................    13     0      0      0      0     100     0      0      0      0      50     0      0
July 2014................................     3     0      0      0      0     100     0      0      0      0      44     0      0
July 2015................................     0     0      0      0      0      87     0      0      0      0      37     0      0
July 2016................................     0     0      0      0      0      66     0      0      0      0      28     0      0
July 2017................................     0     0      0      0      0      44     0      0      0      0      19     0      0
July 2018................................     0     0      0      0      0      20     0      0      0      0       8     0      0
July 2019................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2020................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2021................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2022................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2023................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2024................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2025................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2026................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2027................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2028................................     0     0      0      0      0       0     0      0      0      0       0     0      0
Weighted Average Life
  (in years)(1)..........................   9.7   2.9    2.9    2.9    2.9    18.7   6.0    6.0    6.0    4.9    13.5   4.2    4.2
 
<CAPTION>
 
DISTRIBUTION DATE                          400%   500%
- -----------------------------------------  ----   ----
<S>                                        <C>    <C>
Initial Percentage.......................  100    100
July 1999................................   99     99
July 2000................................   86     86
July 2001................................   69     69
July 2002................................   52     51
July 2003................................   35     15
July 2004................................   18      0
July 2005................................    6      0
July 2006................................    0      0
July 2007................................    0      0
July 2008................................    0      0
July 2009................................    0      0
July 2010................................    0      0
July 2011................................    0      0
July 2012................................    0      0
July 2013................................    0      0
July 2014................................    0      0
July 2015................................    0      0
July 2016................................    0      0
July 2017................................    0      0
July 2018................................    0      0
July 2019................................    0      0
July 2020................................    0      0
July 2021................................    0      0
July 2022................................    0      0
July 2023................................    0      0
July 2024................................    0      0
July 2025................................    0      0
July 2026................................    0      0
July 2027................................    0      0
July 2028................................    0      0
Weighted Average Life
  (in years)(1)..........................  4.2    3.7
</TABLE>
 
- ------------------
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A2-24

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 2 CERTIFICATES
<TABLE>
<CAPTION>
                                                                                                                     CLASS 2-A6
                                                      CLASS 2-A4                         CLASS 2-A5              ------------------
                                           --------------------------------   --------------------------------
                                                                                                                     PREPAYMENT
                                                PREPAYMENT ASSUMPTION              PREPAYMENT ASSUMPTION             ASSUMPTION
                                           --------------------------------   --------------------------------   ------------------
DISTRIBUTION DATE                           0%    100%   275%   400%   500%    0%    100%   275%   400%   500%    0%    100%   275%
- -----------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                        <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage.......................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 1999................................    98    94     93     90     86      98    94     93     90     86      98    94     93
July 2000................................    97    94     79     65     53      97    94     79     65     53      97    94     79
July 2001................................    96    93     62     37     18      96    93     62     37     18      96    93     62
July 2002................................    96    93     48     18      0      96    93     48     18      0      96    93     48
July 2003................................    95    92     38      6      0      95    92     38      6      0      95    92     38
July 2004................................    95    91     34      3      0      95    91     34      3      0      95    91     34
July 2005................................    94    89     31      3      0      94    89     31      3      0      94    89     31
July 2006................................    93    84     27      3      0      93    84     27      3      0      93    84     27
July 2007................................    92    76     23      1      0      92    76     23      1      0      92    76     23
July 2008................................    91    69     21      1      0      91    69     21      1      0      91    69     21
July 2009................................    90    63     19      1      0      90    63     19      1      0      90    63     19
July 2010................................    89    56     18      *      0      89    56     18      *      0      89    56     18
July 2011................................    88    50     16      *      0      88    50     16      *      0      88    50     16
July 2012................................    87    44     13      0      0      87    44     13      0      0      87    44     13
July 2013................................    86    39      9      0      0      86    39      9      0      0      86    39      9
July 2014................................    84    33      7      0      0      84    33      7      0      0      84    33      7
July 2015................................    83    28      4      0      0      83    28      4      0      0      83    28      4
July 2016................................    81    22      3      0      0      81    22      3      0      0      81    22      3
July 2017................................    79    17      1      0      0      79    17      1      0      0      79    17      1
July 2018................................    78    11      0      0      0      78    11      0      0      0      78    11      0
July 2019................................    74     4      0      0      0      74     4      0      0      0      74     4      0
July 2020................................    65     0      0      0      0      65     0      0      0      0      65     0      0
July 2021................................    55     0      0      0      0      55     0      0      0      0      55     0      0
July 2022................................    44     0      0      0      0      44     0      0      0      0      44     0      0
July 2023................................    32     0      0      0      0      32     0      0      0      0      32     0      0
July 2024................................    19     0      0      0      0      19     0      0      0      0      19     0      0
July 2025................................     2     0      0      0      0       2     0      0      0      0       2     0      0
July 2026................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2027................................     0     0      0      0      0       0     0      0      0      0       0     0      0
July 2028................................     0     0      0      0      0       0     0      0      0      0       0     0      0
Weighted Average Life
  (in years)(1)..........................  21.3   13.0   6.0    2.8    2.1    21.3   13.0   6.0    2.8    2.1    21.3   13.0   6.0
 
<CAPTION>
 
DISTRIBUTION DATE                          400%   500%
- -----------------------------------------  ----   ----
<S>                                        <C>    <C>
Initial Percentage.......................  100    100
July 1999................................   90     86
July 2000................................   65     53
July 2001................................   37     18
July 2002................................   18      0
July 2003................................    6      0
July 2004................................    3      0
July 2005................................    3      0
July 2006................................    3      0
July 2007................................    1      0
July 2008................................    1      0
July 2009................................    1      0
July 2010................................    *      0
July 2011................................    *      0
July 2012................................    0      0
July 2013................................    0      0
July 2014................................    0      0
July 2015................................    0      0
July 2016................................    0      0
July 2017................................    0      0
July 2018................................    0      0
July 2019................................    0      0
July 2020................................    0      0
July 2021................................    0      0
July 2022................................    0      0
July 2023................................    0      0
July 2024................................    0      0
July 2025................................    0      0
July 2026................................    0      0
July 2027................................    0      0
July 2028................................    0      0
Weighted Average Life
  (in years)(1)..........................  2.8    2.1
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A2-25

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 2 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                                     CLASS 2-A9
                                                      CLASS 2-A7                         CLASS 2-A8              ------------------
                                           --------------------------------   --------------------------------
                                                                                                                     PREPAYMENT
                                                PREPAYMENT ASSUMPTION              PREPAYMENT ASSUMPTION             ASSUMPTION
                                           --------------------------------   --------------------------------   ------------------
DISTRIBUTION DATE                           0%    100%   275%   400%   500%    0%    100%   275%   400%   500%    0%    100%   275%
- -----------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                        <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage.......................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 1999................................   107   107     15      0      0     107   107    107    107    107     100   100    100
July 2000................................   114   114      0      0      0     114   114    114    114    114     100   100    100
July 2001................................   122   122      0      0      0     122   122    122    122    122     100   100    100
July 2002................................   131   131      0      0      0     131   131    131    131      0     100   100    100
July 2003................................   140   140      0      0      0     140   140    140    140      0     100   100    100
July 2004................................   150   150      0      0      0     150   150    150    150      0      98    95     91
July 2005................................   160   160      0      0      0     160   160    160    160      0      96    90     80
July 2006................................   171   171      0      0      0     171   171    171    171      0      93    83     65
July 2007................................   183   183      0      0      0     183   183    183    183      0      91    75     49
July 2008................................   196   196      0      0      0     196   196    196    196      0      88    66     33
July 2009................................   210   210      0      0      0     210   210    210    210      0      85    57     19
July 2010................................   224   224      0      0      0     224   224    224    224      0      82    49      8
July 2011................................   240   240      0      0      0     240   240    240    240      0      79    41      0
July 2012................................   257   257      0      0      0     257   257    257    247      0      75    34      0
July 2013................................   274   274      0      0      0     274   274    274    246      0      71    27      0
July 2014................................   294   294      0      0      0     294   294    294    202      0      67    20      0
July 2015................................   314   314      0      0      0     314   314    314    147      0      62    14      0
July 2016................................   336   336      0      0      0     336   336    336    106      0      57     8      0
July 2017................................   359   359      0      0      0     359   359    359     76      0      52     3      0
July 2018................................   384   384      0      0      0     384   384    353     54      0      46     0      0
July 2019................................   411   411      0      0      0     411   411    274     38      0      40     0      0
July 2020................................   440   398      0      0      0     440   440    209     27      0      33     0      0
July 2021................................   470   320      0      0      0     470   470    158     18      0      26     0      0
July 2022................................   503   245      0      0      0     503   503    116     12      0      18     0      0
July 2023................................   538   174      0      0      0     538   538     83      8      0      10     0      0
July 2024................................   576   106      0      0      0     576   576     57      5      0       1     0      0
July 2025................................   616    40      0      0      0     616   616     37      3      0       0     0      0
July 2026................................   397     0      0      0      0     658   530     21      1      0       0     0      0
July 2027................................   119     0      0      0      0     704   238      8      1      0       0     0      0
July 2028................................     0     0      0      0      0       0     0      0      0      0       0     0      0
Weighted Average Life
  (in years)(1)..........................  28.3   24.5   0.7    0.5    0.4    29.7   28.8   23.0   18.3   3.9    18.2   12.1   9.0
 
<CAPTION>
 
DISTRIBUTION DATE                          400%   500%
- -----------------------------------------  ----   ----
<S>                                        <C>    <C>
Initial Percentage.......................  100    100
July 1999................................  100    100
July 2000................................  100    100
July 2001................................  100    100
July 2002................................  100    100
July 2003................................  100    100
July 2004................................   87     83
July 2005................................   73     53
July 2006................................   58     35
July 2007................................   43     23
July 2008................................   30     16
July 2009................................   21     11
July 2010................................   13      7
July 2011................................    8      5
July 2012................................    4      3
July 2013................................    1      2
July 2014................................    0      2
July 2015................................    0      1
July 2016................................    0      1
July 2017................................    0      *
July 2018................................    0      *
July 2019................................    0      *
July 2020................................    0      *
July 2021................................    0      *
July 2022................................    0      *
July 2023................................    0      *
July 2024................................    0      *
July 2025................................    0      *
July 2026................................    0      *
July 2027................................    0      *
July 2028................................    0      0
Weighted Average Life
  (in years)(1)..........................  8.9    8.0
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A2-26

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 2 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                            CLASS 2-M, CLASS 2-B1
                                                                           CLASS 2-R AND CLASS 2-RL            AND CLASS 2-B2
                                                                       --------------------------------   -------------------------
                                                                            PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION
                                                                       --------------------------------   -------------------------
DISTRIBUTION DATE                                                       0%    100%   275%   400%   500%    0%    100%   275%   400%
- ---------------------------------------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                                                    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage...................................................   100   100    100    100    100     100   100    100    100
July 1999............................................................   100   100    100    100    100      99    99     99     99
July 2000............................................................   100   100    100    100    100      98    98     98     98
July 2001............................................................   100   100    100    100    100      97    97     97     97
July 2002............................................................   100   100    100    100    100      96    96     96     96
July 2003............................................................   100   100    100    100    100      94    94     94     94
July 2004............................................................   100   100    100    100      0      93    91     88     86
July 2005............................................................   100   100    100    100      0      92    88     81     76
July 2006............................................................   100   100    100    100      0      90    83     71     63
July 2007............................................................   100   100    100    100      0      88    78     61     50
July 2008............................................................   100   100    100    100      0      87    71     50     37
July 2009............................................................   100   100    100    100      0      85    66     40     28
July 2010............................................................   100   100    100    100      0      82    60     33     20
July 2011............................................................   100   100    100    100      0      80    55     27     15
July 2012............................................................   100   100    100    100      0      78    50     22     11
July 2013............................................................   100   100    100    100      0      75    45     17      8
July 2014............................................................   100   100    100    100      0      72    41     14      6
July 2015............................................................   100   100    100    100      0      69    37     11      4
July 2016............................................................   100   100    100    100      0      66    33      9      3
July 2017............................................................   100   100    100    100      0      62    29      7      2
July 2018............................................................   100   100    100    100      0      58    26      5      2
July 2019............................................................   100   100    100    100      0      54    23      4      1
July 2020............................................................   100   100    100    100      0      49    19      3      1
July 2021............................................................   100   100    100    100      0      45    16      2      1
July 2022............................................................   100   100    100    100      0      39    14      2      *
July 2023............................................................   100   100    100    100      0      34    11      1      *
July 2024............................................................   100   100    100    100      0      28     9      1      *
July 2025............................................................   100   100    100    100      0      21     6      1      *
July 2026............................................................   100   100    100    100      0      14     4      *      *
July 2027............................................................   100   100    100    100      0       7     2      *      *
July 2028............................................................     0     0      0      0      0       0     0      0      0
Weighted Average Life
  (in years)(1)......................................................  29.9   29.9   29.9   29.9   5.8    20.0   14.9   10.9   9.5
 
<CAPTION>
 
DISTRIBUTION DATE                                                      500%
- ---------------------------------------------------------------------  ----
<S>                                                                    <C>
Initial Percentage...................................................  100
July 1999............................................................   99
July 2000............................................................   98
July 2001............................................................   97
July 2002............................................................   96
July 2003............................................................   94
July 2004............................................................   84
July 2005............................................................   72
July 2006............................................................   57
July 2007............................................................   42
July 2008............................................................   29
July 2009............................................................   20
July 2010............................................................   13
July 2011............................................................    9
July 2012............................................................    6
July 2013............................................................    4
July 2014............................................................    3
July 2015............................................................    2
July 2016............................................................    1
July 2017............................................................    1
July 2018............................................................    1
July 2019............................................................    *
July 2020............................................................    *
July 2021............................................................    *
July 2022............................................................    *
July 2023............................................................    *
July 2024............................................................    *
July 2025............................................................    *
July 2026............................................................    *
July 2027............................................................    *
July 2028............................................................    0
Weighted Average Life
  (in years)(1)......................................................  8.8
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A2-27

<PAGE>

                           POOL 2 PAC BALANCES TABLE
 
     The PAC Balances set forth in the table below were calculated on the basis
of the Class Certificate Principal Balances of the Pool 2 PAC Certificates set
forth on the cover hereof, and the other assumptions described in 'Pool 2 Yield
and Weighted Average Life Considerations--Weighted Average Lives of the Pool 2
Certificates--Pool 2 PAC Certificates' in this Pool 2 Annex. If such Class
Certificate Principal Balances are increased or decreased in accordance with the
variance permitted hereby, the applicable balances set forth in the table below
will be increased or decreased substantially correspondingly. In such event, the
final Pool 2 PAC Balances Table will be calculated on or about the Closing Date
on the basis of such revised Class Certificate Principal Balances and on the
basis of (1) the applicable Structuring Range of the Pool 2 PAC Certificates (2)
the actual characteristics of the Pool 2 Mortgage Loans and (3) the assumptions
set forth in clauses (i), (iv) through (viii), (x) and (xi) of the Pool 2
Modeling Assumptions. The final Pool 2 PAC Balances Table will be set forth in
the Agreement, which will be filed as an exhibit to the Detailed Description.
 
<TABLE>
<CAPTION>
                                                                                      POOL 2 PAC BALANCES
                                                                                --------------------------------
DISTRIBUTION DATE                                                                 CLASS 2-A1        CLASS 2-A2
- -----------------------------------------------------------------------------   --------------    --------------
<S>                                                                             <C>               <C>
Initial Balance..............................................................   $42,800,000.00    $23,450,000.00
August 1998..................................................................    42,800,000.00     23,450,000.00
September 1998...............................................................    42,800,000.00     23,450,000.00
October 1998.................................................................    42,800,000.00     23,450,000.00
November 1998................................................................    42,800,000.00     23,450,000.00
December 1998................................................................    42,800,000.00     23,450,000.00
January 1999.................................................................    42,800,000.00     23,450,000.00
February 1999................................................................    42,800,000.00     23,450,000.00
March 1999...................................................................    42,800,000.00     23,450,000.00
April 1999...................................................................    42,800,000.00     23,450,000.00
May 1999.....................................................................    42,800,000.00     23,450,000.00
June 1999....................................................................    42,800,000.00     23,450,000.00
July 1999....................................................................    42,191,938.98     23,450,000.00
August 1999..................................................................    41,551,399.24     23,450,000.00
September 1999...............................................................    40,878,640.76     23,450,000.00
Ocotober 1999................................................................    40,173,940.21     23,450,000.00
November 1999................................................................    39,437,590.81     23,450,000.00
December 1999................................................................    38,669,902.13     23,450,000.00
January 2000.................................................................    37,871,199.87     23,450,000.00
February 2000................................................................    37,041,862.43     23,450,000.00
March 2000...................................................................    36,182,284.62     23,450,000.00
April 2000...................................................................    35,292,837.96     23,450,000.00
May 2000.....................................................................    34,374,002.59     23,450,000.00
June 2000....................................................................    33,426,249.77     23,450,000.00
July 2000....................................................................    32,450,054.15     23,450,000.00
August 2000..................................................................    31,445,915.34     23,450,000.00
September 2000...............................................................    30,415,127.96     23,450,000.00
October 2000.................................................................    29,358,452.97     23,450,000.00
November 2000................................................................    28,279,350.44     23,450,000.00
December 2000................................................................    27,189,472.22     23,450,000.00
January 2001.................................................................    26,105,109.59     23,450,000.00
February 2001................................................................    25,026,234.49     23,450,000.00
March 2001...................................................................    23,952,819.04     23,450,000.00
April 2001...................................................................    22,884,835.49     23,450,000.00
May 2001.....................................................................    21,822,256.24     23,450,000.00
June 2001....................................................................    20,765,053.83     23,450,000.00
July 2001....................................................................    19,713,200.95     23,450,000.00
August 2001..................................................................    18,666,670.43     23,450,000.00
</TABLE>
 
                                     A2-28
<PAGE>

<TABLE>
<CAPTION>
                                                                                      POOL 2 PAC BALANCES
                                                                                --------------------------------
DISTRIBUTION DATE                                                                 CLASS 2-A1        CLASS 2-A2
- -----------------------------------------------------------------------------   --------------    --------------
<S>                                                                             <C>               <C>
September 2001...............................................................   $17,625,435.25    $23,450,000.00
October 2001.................................................................    16,589,468.52     23,450,000.00
November 2001................................................................    15,558,743.51     23,450,000.00
December 2001................................................................    14,533,233.60     23,450,000.00
January 2002.................................................................    13,512,912.33     23,450,000.00
February 2002................................................................    12,497,753.40     23,450,000.00
March 2002...................................................................    11,487,730.61     23,450,000.00
April 2002...................................................................    10,482,817.91     23,450,000.00
May 2002.....................................................................     9,482,989.40     23,450,000.00
June 2002....................................................................     8,488,219.31     23,450,000.00
July 2002....................................................................     7,498,482.00     23,450,000.00
August 2002..................................................................     6,513,751.97     23,450,000.00
September 2002...............................................................     5,534,003.85     23,450,000.00
October 2002.................................................................     4,559,212.41     23,450,000.00
November 2002................................................................     3,589,352.55     23,450,000.00
December 2002................................................................     2,624,399.30     23,450,000.00
January 2003.................................................................     1,664,327.84     23,450,000.00
February 2003................................................................       709,113.45     23,450,000.00
March 2003...................................................................             0.00     23,208,731.56
April 2003...................................................................             0.00     22,263,157.73
May 2003.....................................................................             0.00     21,322,367.64
June 2003....................................................................             0.00     20,386,337.12
July 2003....................................................................             0.00     19,455,042.09
August 2003..................................................................             0.00     18,661,444.28
September 2003...............................................................             0.00     17,872,544.66
October 2003.................................................................             0.00     17,088,320.43
November 2003................................................................             0.00     16,308,748.93
December 2003................................................................             0.00     15,533,807.61
January 2004.................................................................             0.00     14,763,474.06
February 2004................................................................             0.00     13,997,726.00
March 2004...................................................................             0.00     13,236,541.26
April 2004...................................................................             0.00     12,479,897.81
May 2004.....................................................................             0.00     11,727,773.73
June 2004....................................................................             0.00     10,980,147.22
July 2004....................................................................             0.00     10,236,996.64
August 2004..................................................................             0.00      9,560,115.46
September 2004...............................................................             0.00      8,906,024.44
October 2004.................................................................             0.00      8,274,129.60
November 2004................................................................             0.00      7,657,634.58
December 2004................................................................             0.00      7,055,870.38
January 2005.................................................................             0.00      6,468,490.83
February 2005................................................................             0.00      5,895,157.81
March 2005...................................................................             0.00      5,335,541.07
April 2005...................................................................             0.00      4,789,318.02
May 2005.....................................................................             0.00      4,256,173.56
June 2005....................................................................             0.00      3,735,799.94
July 2005....................................................................             0.00      3,227,896.57
August 2005..................................................................             0.00      2,897,412.07
September 2005...............................................................             0.00      2,574,854.15
October 2005.................................................................             0.00      2,260,036.05
November 2005................................................................             0.00      1,952,775.41
December 2005................................................................             0.00      1,652,894.06
</TABLE>
 
                                     A2-29
<PAGE>

<TABLE>
<CAPTION>
                                                                                      POOL 2 PAC BALANCES
                                                                                --------------------------------
DISTRIBUTION DATE                                                                 CLASS 2-A1        CLASS 2-A2
- -----------------------------------------------------------------------------   --------------    --------------
<S>                                                                             <C>               <C>
January 2006.................................................................             0.00    $ 1,360,218.03
February 2006................................................................             0.00      1,074,577.35
March 2006...................................................................             0.00        795,806.06
April 2006...................................................................             0.00        523,742.03
May 2006.....................................................................             0.00        258,226.93
June 2006....................................................................             0.00              0.00
</TABLE>
 
                                     A2-30

<PAGE>

                           POOL 2 TAC BALANCES TABLE
 
     The TAC Balances set forth in the table below were calculated on the basis
of the Class Certificate Principal Balances of the Pool 2 TAC Certificates set
forth on the cover hereof set forth in 'Description of the
Certificates--Distribution on the Pool 1 Certificates--Interest' in this Pool 2
Annex, and a constant prepayment rate of 125% of the Prepayment Assumption (the
'TAC Prepayment Assumption'). If such Class Certificate Principal Balance is
increased or decreased in accordance with the variance permitted hereby the
applicable balances set forth in the table below will be increased or decreased
substantially correspondingly. In such event, the final Pool 2 TAC Balances
Table will be calculated on or about the Closing Date on the basis of such
revised Class Certificate Principal Balance and the actual characteristics of
the Pool 2 Mortgage Loans and on the basis of (1) the Pool 2 TAC Prepayment
Assumption and (2) the assumptions set forth in clauses (i), (iv) through
(viii), (x) and (xi) of the Pool 2 Modeling Assumptions. The final Pool 2 TAC
Balances Table will be set forth in the Agreement, which will be filed as an
exhibit to the Detailed Description.
 
<TABLE>
<CAPTION>
                                                                TAC BALANCES      TAC BALANCES     TAC BALANCES
                                                               --------------    --------------    -------------
                                                               CLASS 2-A4 TAC    CLASS 2-A5 TAC     CLASS 2-A6
DISTRIBUTION DATE                                                 BALANCE           BALANCE         TAC BALANCE
- ------------------------------------------------------------   --------------    --------------    -------------
<S>                                                            <C>               <C>               <C>
Initial Balance.............................................   $69,660,000.00    $13,416,000.00    $4,644,000.00
August 1998.................................................    69,423,880.37     13,370,525.11     4,628,258.69
September 1998..............................................    69,153,799.31     13,318,509.50     4,610,253.29
October 1998................................................    68,849,824.33     13,259,966.17     4,589,988.29
November 1998...............................................    68,512,044.61     13,194,912.30     4,567,469.64
December 1998...............................................    68,140,571.07     13,123,369.24     4,542,704.74
January 1999................................................    67,735,536.28     13,045,362.54     4,515,702.42
February 1999...............................................    67,297,094.43     12,960,921.89     4,486,472.96
March 1999..................................................    66,825,421.26     12,870,081.13     4,455,028.08
April 1999..................................................    66,320,714.00     12,772,878.25     4,421,380.93
May 1999....................................................    65,783,191.19     12,669,355.34     4,385,546.08
June 1999...................................................    65,213,092.61     12,559,558.58     4,347,539.51
July 1999...................................................    65,093,551.04     12,536,535.76     4,339,570.07
August 1999.................................................    64,967,768.11     12,512,310.89     4,331,184.54
September 1999..............................................    64,835,839.66     12,486,902.45     4,322,389.31
October 1999................................................    64,697,868.71     12,460,330.27     4,313,191.25
November 1999...............................................    64,553,965.34     12,432,615.55     4,303,597.69
December 1999...............................................    64,404,246.49     12,403,780.81     4,293,616.43
January 2000................................................    64,248,835.91     12,373,849.88     4,283,255.73
February 2000...............................................    64,087,871.16     12,342,849.26     4,272,524.74
March 2000..................................................    63,921,496.32     12,310,806.70     4,261,433.09
April 2000..................................................    63,749,854.00     12,277,749.66     4,249,990.27
May 2000....................................................    63,573,111.19     12,243,710.30     4,238,207.41
June 2000...................................................    63,391,435.81     12,208,720.97     4,226,095.72
July 2000...................................................    63,204,999.05     12,172,814.63     4,213,666.60
August 2000.................................................    63,013,979.50     12,136,025.68     4,200,931.97
September 2000..............................................    62,818,712.19     12,098,418.64     4,187,914.15
October 2000................................................    62,619,428.06     12,060,038.00     4,174,628.54
November 2000...............................................    62,416,881.45     12,021,029.02     4,161,125.43
December 2000...............................................    62,213,402.12     11,981,840.41     4,147,560.14
January 2001................................................    62,012,177.96     11,943,086.13     4,134,145.20
February 2001...............................................    61,813,186.44     11,904,761.83     4,120,879.10
March 2001..................................................    61,616,405.22     11,866,863.23     4,107,760.35
April 2001..................................................    61,421,812.12     11,829,386.04     4,094,787.47
May 2001....................................................    61,229,385.08     11,792,326.02     4,081,959.01
June 2001...................................................    61,039,102.25     11,755,678.95     4,069,273.48
July 2001...................................................    60,850,941.91     11,719,440.66     4,056,729.46
August 2001.................................................    60,664,882.50     11,683,607.00     4,044,325.50
September 2001..............................................    60,480,902.63     11,648,173.84     4,032,060.18
</TABLE>
 
                                     A2-31
<PAGE>

<TABLE>
<CAPTION>
                                                                TAC BALANCES      TAC BALANCES     TAC BALANCES
                                                               --------------    --------------    -------------
                                                               CLASS 2-A4 TAC    CLASS 2-A5 TAC     CLASS 2-A6
DISTRIBUTION DATE                                                 BALANCE           BALANCE         TAC BALANCE
- ------------------------------------------------------------   --------------    --------------    -------------
<S>                                                            <C>               <C>               <C>
October 2001................................................   $60,298,981.04    $11,613,137.09    $4,019,932.07
November 2001...............................................    60,119,096.65     11,578,492.69     4,007,939.78
December 2001...............................................    59,941,228.52     11,544,236.60     3,996,081.90
January 2002................................................    59,765,355.85     11,510,364.83     3,984,357.06
February 2002...............................................    59,591,458.02     11,476,873.40     3,972,763.87
March 2002..................................................    59,419,514.50     11,443,758.35     3,961,300.97
April 2002..................................................    59,249,504.99     11,411,015.78     3,949,967.00
May 2002....................................................    59,081,409.26     11,378,641.78     3,938,760.62
June 2002...................................................    58,915,207.27     11,346,632.51     3,927,680.48
July 2002...................................................    58,750,879.12     11,314,984.13     3,916,725.27
August 2002.................................................    58,588,405.02     11,283,692.82     3,905,893.67
September 2002..............................................    58,427,765.36     11,252,754.81     3,895,184.36
October 2002................................................    58,268,940.66     11,222,166.35     3,884,596.04
November 2002...............................................    58,111,911.56     11,191,923.71     3,874,127.44
December 2002...............................................    57,956,658.86     11,162,023.19     3,863,777.26
January 2003................................................    57,803,163.48     11,132,461.12     3,853,544.23
February 2003...............................................    57,651,406.50     11,103,233.85     3,843,427.10
March 2003..................................................    57,501,369.12     11,074,337.76     3,833,424.61
April 2003..................................................    57,353,032.66     11,045,769.25     3,823,535.51
May 2003....................................................    57,206,378.59     11,017,524.77     3,813,758.57
June 2003...................................................    57,061,388.52     10,989,600.75     3,804,092.57
July 2003...................................................    56,918,044.17     10,961,993.69     3,794,536.28
August 2003.................................................    56,792,934.36     10,937,898.47     3,786,195.62
September 2003..............................................    56,669,337.24     10,914,094.58     3,777,955.82
October 2003................................................    56,547,234.93     10,890,578.58     3,769,815.66
November 2003...............................................    56,426,609.65     10,867,347.04     3,761,773.98
December 2003...............................................    56,307,443.76     10,844,396.58     3,753,829.58
January 2004................................................    56,189,719.74     10,821,723.80     3,745,981.32
February 2004...............................................    56,073,420.18     10,799,325.37     3,738,228.01
March 2004..................................................    55,958,527.81     10,777,197.95     3,730,568.52
April 2004..................................................    55,845,025.47     10,755,338.24     3,723,001.70
May 2004....................................................    55,732,896.12     10,733,742.96     3,715,526.41
June 2004...................................................    55,622,122.82     10,712,408.84     3,708,141.52
July 2004...................................................    55,512,688.78     10,691,332.65     3,700,845.92
August 2004.................................................    55,381,383.52     10,666,044.23     3,692,092.23
September 2004..............................................    55,236,622.68     10,638,164.37     3,682,441.51
October 2004................................................    55,078,844.81     10,607,777.52     3,671,922.99
November 2004...............................................    54,913,414.08     10,575,916.79     3,660,894.27
December 2004...............................................    54,740,829.02     10,542,678.18     3,649,388.60
January 2005................................................    54,561,331.99     10,508,108.38     3,637,422.13
February 2005...............................................    54,375,159.17     10,472,252.88     3,625,010.61
March 2005..................................................    54,182,540.69     10,435,155.99     3,612,169.38
April 2005..................................................    53,983,700.81     10,396,860.90     3,598,913.39
May 2005....................................................    53,778,857.99     10,357,409.69     3,585,257.20
June 2005...................................................    53,568,225.11     10,316,843.35     3,571,215.01
July 2005...................................................    53,352,009.51     10,275,201.83     3,556,800.63
August 2005.................................................    53,048,592.57     10,216,765.98     3,536,572.84
September 2005..............................................    52,742,680.58     10,157,849.59     3,516,178.71
October 2005................................................    52,434,392.73     10,098,475.64     3,495,626.18
November 2005...............................................    52,123,844.89     10,038,666.42     3,474,922.99
December 2005...............................................    51,811,149.75      9,978,443.66     3,454,076.65
</TABLE>
 
                                     A2-32
<PAGE>

<TABLE>
<CAPTION>
                                                                TAC BALANCES      TAC BALANCES     TAC BALANCES
                                                               --------------    --------------    -------------
                                                               CLASS 2-A4 TAC    CLASS 2-A5 TAC     CLASS 2-A6
DISTRIBUTION DATE                                                 BALANCE           BALANCE         TAC BALANCE
- ------------------------------------------------------------   --------------    --------------    -------------
<S>                                                            <C>               <C>               <C>
January 2006................................................   $51,496,416.89    $ 9,917,828.44    $3,433,094.46
February 2006...............................................    51,179,752.83      9,856,841.29     3,411,983.52
March 2006..................................................    50,861,261.14      9,795,502.15     3,390,750.74
April 2006..................................................    50,541,042.48      9,733,830.40     3,369,402.83
May 2006....................................................    50,219,194.67      9,671,844.90     3,347,946.31
June 2006...................................................    49,895,102.95      9,609,427.23     3,326,340.20
July 2006...................................................    49,369,464.84      9,508,193.23     3,291,297.66
August 2006.................................................    48,893,638.40      9,416,552.58     3,259,575.89
September 2006..............................................    48,420,711.34      9,325,470.33     3,228,047.42
October 2006................................................    47,950,660.11      9,234,941.95     3,196,710.67
November 2006...............................................    47,483,461.25      9,144,962.91     3,165,564.08
December 2006...............................................    47,019,091.47      9,055,528.73     3,134,606.10
January 2007................................................    46,557,527.64      8,966,634.95     3,103,835.18
February 2007...............................................    46,098,746.74      8,878,277.15     3,073,249.78
March 2007..................................................    45,642,725.89      8,790,450.91     3,042,848.39
April 2007..................................................    45,189,442.35      8,703,151.86     3,012,629.49
May 2007....................................................    44,738,873.52      8,616,375.64     2,982,591.57
June 2007...................................................    44,290,996.95      8,530,117.93     2,952,733.13
July 2007...................................................    43,845,790.30      8,444,374.43     2,923,052.69
August 2007.................................................    43,445,921.76      8,367,362.71     2,896,394.78
September 2007..............................................    43,048,037.54      8,290,733.16     2,869,869.17
October 2007................................................    42,652,121.23      8,214,482.61     2,843,474.75
November 2007...............................................    42,258,156.56      8,138,607.93     2,817,210.44
December 2007...............................................    41,866,127.31      8,063,106.00     2,791,075.15
January 2008................................................    41,476,017.33      7,987,973.71     2,765,067.82
February 2008...............................................    41,087,810.59      7,913,207.97     2,739,187.37
March 2008..................................................    40,701,491.13      7,838,805.70     2,713,432.74
April 2008..................................................    40,317,043.07      7,764,763.85     2,687,802.87
May 2008....................................................    39,934,450.61      7,691,079.38     2,662,296.71
June 2008...................................................    39,553,698.03      7,617,749.25     2,636,913.20
July 2008...................................................    39,174,769.71      7,544,770.46     2,611,651.31
August 2008.................................................    38,797,650.09      7,472,140.02     2,586,510.01
September 2008..............................................    38,422,323.69      7,399,854.93     2,561,488.25
October 2008................................................    38,048,775.13      7,327,912.25     2,536,585.01
November 2008...............................................    37,676,989.08      7,256,309.01     2,511,799.27
December 2008...............................................    37,306,950.31      7,185,042.28     2,487,130.02
January 2009................................................    36,938,643.65      7,114,109.15     2,462,576.24
February 2009...............................................    36,572,054.03      7,043,506.70     2,438,136.94
March 2009..................................................    36,207,166.43      6,973,232.05     2,413,811.10
April 2009..................................................    35,843,965.93      6,903,282.33     2,389,597.73
May 2009....................................................    35,482,437.66      6,833,654.66     2,365,495.84
June 2009...................................................    35,122,566.84      6,764,346.21     2,341,504.46
July 2009...................................................    34,764,338.75      6,695,354.13     2,317,622.58
August 2009.................................................    34,407,738.77      6,626,675.61     2,293,849.25
September 2009..............................................    34,052,752.33      6,558,307.86     2,270,183.49
October 2009................................................    33,699,364.92      6,490,248.06     2,246,624.33
November 2009...............................................    33,347,562.14      6,422,493.45     2,223,170.81
December 2009...............................................    32,997,329.62      6,355,041.26     2,199,821.97
January 2010................................................    32,648,653.10      6,287,888.75     2,176,576.87
February 2010...............................................    32,301,518.35      6,221,033.16     2,153,434.56
March 2010..................................................    31,955,911.23      6,154,471.79     2,130,394.08
</TABLE>
 
                                     A2-33
<PAGE>

<TABLE>
<CAPTION>
                                                                TAC BALANCES      TAC BALANCES     TAC BALANCES
                                                               --------------    --------------    -------------
                                                               CLASS 2-A4 TAC    CLASS 2-A5 TAC     CLASS 2-A6
DISTRIBUTION DATE                                                 BALANCE           BALANCE         TAC BALANCE
- ------------------------------------------------------------   --------------    --------------    -------------
<S>                                                            <C>               <C>               <C>
April 2010..................................................   $31,611,817.67    $ 6,088,201.92    $2,107,454.51
May 2010....................................................    31,269,223.65      6,022,220.85     2,084,614.91
June 2010...................................................    30,928,115.25      5,956,525.90     2,061,874.35
July 2010...................................................    30,588,478.58      5,891,114.39     2,039,231.91
August 2010.................................................    30,250,299.83      5,825,983.67     2,016,686.66
September 2010..............................................    29,913,565.28      5,761,131.09     1,994,237.69
October 2010................................................    29,578,261.22      5,696,554.01     1,971,884.08
November 2010...............................................    29,244,374.06      5,632,249.82     1,949,624.94
December 2010...............................................    28,911,890.25      5,568,215.90     1,927,459.35
January 2011................................................    28,580,796.29      5,504,449.66     1,905,386.42
February 2011...............................................    28,251,078.77      5,440,948.50     1,883,405.25
March 2011..................................................    27,922,724.33      5,377,709.87     1,861,514.96
April 2011..................................................    27,595,719.65      5,314,731.19     1,839,714.64
May 2011....................................................    27,270,051.50      5,252,009.92     1,818,003.43
June 2011...................................................    26,945,706.71      5,189,543.51     1,796,380.45
July 2011...................................................    26,622,672.16      5,127,329.45     1,774,844.81
August 2011.................................................    26,300,934.78      5,065,365.22     1,753,395.65
September 2011..............................................    25,980,481.58      5,003,648.30     1,732,032.11
October 2011................................................    25,661,299.62      4,942,176.22     1,710,753.31
November 2011...............................................    25,343,376.00      4,880,946.49     1,689,558.40
December 2011...............................................    25,026,697.92      4,819,956.64     1,668,446.53
January 2012................................................    24,711,252.58      4,759,204.20     1,647,416.84
February 2012...............................................    24,397,027.29      4,698,686.74     1,626,468.49
March 2012..................................................    24,084,009.38      4,638,401.81     1,605,600.63
April 2012..................................................    23,772,186.24      4,578,346.98     1,584,812.42
May 2012....................................................    23,461,545.34      4,518,519.84     1,564,103.02
June 2012...................................................    23,152,074.19      4,458,917.99     1,543,471.61
July 2012...................................................    22,843,760.33      4,399,539.03     1,522,917.36
August 2012.................................................    22,536,591.38      4,340,380.56     1,502,439.43
September 2012..............................................    22,230,555.01      4,281,440.22     1,482,037.00
October 2012................................................    21,925,638.94      4,222,715.65     1,461,709.26
November 2012...............................................    21,621,830.94      4,164,204.48     1,441,455.40
December 2012...............................................    21,319,118.82      4,105,904.36     1,421,274.59
January 2013................................................    21,017,490.47      4,047,812.98     1,401,166.03
February 2013...............................................    20,716,933.80      3,989,927.99     1,381,128.92
March 2013..................................................    20,417,436.78      3,932,247.08     1,361,162.45
April 2013..................................................    20,118,987.45      3,874,767.95     1,341,265.83
May 2013....................................................    19,821,573.86      3,817,488.30     1,321,438.26
June 2013...................................................    19,525,184.14      3,760,405.83     1,301,678.94
July 2013...................................................    19,229,806.45      3,703,518.28     1,281,987.10
August 2013.................................................    18,935,429.02      3,646,823.37     1,262,361.93
September 2013..............................................    18,642,040.09      3,590,318.83     1,242,802.67
October 2013................................................    18,349,627.98      3,534,002.43     1,223,308.53
November 2013...............................................    18,058,181.04      3,477,871.90     1,203,878.74
December 2013...............................................    17,767,687.67      3,421,925.03     1,184,512.51
January 2014................................................    17,478,136.32      3,366,159.59     1,165,209.09
February 2014...............................................    17,189,515.46      3,310,573.35     1,145,967.70
March 2014..................................................    16,901,813.65      3,255,164.11     1,126,787.58
April 2014..................................................    16,615,019.45      3,199,929.67     1,107,667.96
May 2014....................................................    16,329,121.48      3,144,867.84     1,088,608.10
June 2014...................................................    16,044,108.41      3,089,976.43     1,069,607.23
</TABLE>
 
                                     A2-34
<PAGE>

<TABLE>
<CAPTION>
                                                                TAC BALANCES      TAC BALANCES     TAC BALANCES
                                                               --------------    --------------    -------------
                                                               CLASS 2-A4 TAC    CLASS 2-A5 TAC     CLASS 2-A6
DISTRIBUTION DATE                                                 BALANCE           BALANCE         TAC BALANCE
- ------------------------------------------------------------   --------------    --------------    -------------
<S>                                                            <C>               <C>               <C>
July 2014...................................................   $15,759,968.94    $ 3,035,253.28    $1,050,664.60
August 2014.................................................    15,476,691.81      2,980,696.20     1,031,779.45
September 2014..............................................    15,194,265.83      2,926,303.05     1,012,951.06
October 2014................................................    14,912,679.81      2,872,071.67       994,178.65
November 2014...............................................    14,631,922.63      2,817,999.91       975,461.51
December 2014...............................................    14,351,983.19      2,764,085.65       956,798.88
January 2015................................................    14,072,850.45      2,710,326.75       938,190.03
February 2015...............................................    13,794,513.40      2,656,721.10       919,634.23
March 2015..................................................    13,516,961.06      2,603,266.57       901,130.74
April 2015..................................................    13,240,182.50      2,549,961.07       882,678.83
May 2015....................................................    12,964,166.82      2,496,802.50       864,277.79
June 2015...................................................    12,688,903.18      2,443,788.76       845,926.88
July 2015...................................................    12,414,380.74      2,390,917.77       827,625.38
August 2015.................................................    12,140,588.71      2,338,187.46       809,372.58
September 2015..............................................    11,867,516.37      2,285,595.74       791,167.76
October 2015................................................    11,595,152.98      2,233,140.57       773,010.20
November 2015...............................................    11,323,487.87      2,180,819.89       754,899.19
December 2015...............................................    11,052,510.40      2,128,631.63       736,834.03
January 2016................................................    10,782,209.97      2,076,573.77       718,814.00
February 2016...............................................    10,512,576.00      2,024,644.27       700,838.40
March 2016..................................................    10,243,597.95      1,972,841.09       682,906.53
April 2016..................................................     9,975,265.31      1,921,162.21       665,017.69
May 2016....................................................     9,707,567.62      1,869,605.62       647,171.17
June 2016...................................................     9,440,494.42      1,818,169.30       629,366.29
July 2016...................................................     9,174,035.32      1,766,851.25       611,602.35
August 2016.................................................     8,870,226.36      1,708,339.89       591,348.42
September 2016..............................................     8,492,750.56      1,635,640.85       566,183.37
October 2016................................................     8,116,598.23      1,563,196.70       541,106.55
November 2016...............................................     7,741,754.30      1,491,004.53       516,116.95
December 2016...............................................     7,368,203.73      1,419,061.46       491,213.58
January 2017................................................     6,995,931.56      1,347,364.60       466,395.44
February 2017...............................................     6,624,922.88      1,275,911.07       441,661.53
March 2017..................................................     6,255,162.85      1,204,698.03       417,010.86
April 2017..................................................     5,886,636.69      1,133,722.62       392,442.45
May 2017....................................................     5,519,329.68      1,062,982.01       367,955.31
June 2017...................................................     5,153,227.12        992,473.37       343,548.47
July 2017...................................................     4,788,314.42        922,193.89       319,220.96
August 2017.................................................     4,424,577.02        852,140.76       294,971.80
September 2017..............................................     4,062,000.42        782,311.19       270,800.03
October 2017................................................     3,700,570.16        712,702.40       246,704.68
November 2017...............................................     3,340,271.87        643,311.62       222,684.79
December 2017...............................................     2,981,091.20        574,136.08       198,739.41
January 2018................................................     2,623,013.87        505,173.04       174,867.59
February 2018...............................................     2,266,025.65        436,419.75       151,068.38
March 2018..................................................     1,910,112.36        367,873.49       127,340.82
April 2018..................................................     1,555,259.88        299,531.53       103,683.99
May 2018....................................................     1,201,454.12        231,391.16        80,096.94
June 2018...................................................       848,681.07        163,449.69        56,578.74
July 2018...................................................       497,247.87         95,766.26        33,149.86
August 2018.................................................       146,817.30         28,275.93         9,787.82
September 2018..............................................             0.00              0.00             0.00
</TABLE>
 
                                     A2-35

<PAGE>

                                  POOL 3 ANNEX

             THE POOL 3 MORTGAGE LOANS AND THE POOL 3 CERTIFICATES
 
     Interest and principal will be distributable on the Pool 3 Certificates
solely out of the Pool 3 Available Funds received in respect of the Pool 3
Mortgage Loans. This Pool 3 Annex sets forth certain data with respect to the
Pool 3 Mortgage Loans, describes the manner in which interest and principal will
be distributable on the Pool 3 Certificates and discusses certain yield and
weighted average life considerations relevant to an investment in the Pool 3
Certificates.
 
THE POOL 3 MORTGAGE LOANS
 
     The Pool 3 Mortgage Loans will have an aggregate Scheduled Principal
Balance as of the Cut-off Date, after deducting payments of principal due on or
before such date, of approximately $176,002,356. This amount is subject to a
permitted variance such that the aggregate Scheduled Principal Balance thereof
will not be less than $166,250,000 or greater than $183,750,000.
 
     It is expected that at least 91% (by Scheduled Principal Balance as of the
Cut-off Date) of the Pool 3 Mortgage Loans (and substantially all of the Pool 3
Mortgage Loans with loan-to-value ratios in excess of 80%) will have been
originated under the Company's full or alternative documentation program or
other full or alternative documentation programs acceptable to the Company, that
no more than 4.5% (by Scheduled Principal Balance as of the Cut-off Date) of the
Pool 3 Mortgage Loans will have been originated under the Company's 'No Income
Verification Program' or other no income verification programs acceptable to the
Company, that no more than 1.5% of the Pool 3 Mortgage Loans will have been
originated under the Company's 'Enhanced Streamlined Refinance Program' or other
streamlined refinance programs acceptable to the Company, that none of the Pool
3 Mortgage Loans will have been originated under the Company's 'No Ratio
Program' or other no ratio programs acceptable to the Company, and that no more
than 3.5% of the Pool 3 Mortgage Loans will have been originated under the
Company's 'No Income No Asset Verification Program' or other no income, no asset
verification programs acceptable to the Company. It is expected that no more
than 4.6% (by Scheduled Principal Balance as of the Cut-off Date) of the Pool 3
Mortgage Loans will have been acquired under the Company's 'Relocation Loan'
program or other relocation programs acceptable to the Company. See 'The Trust
Fund-- The Mortgage Loans--Loan Underwriting Policies' in the Prospectus.
 
     The Mortgage Rates borne by the Pool 3 Mortgage Loans are expected to range
from 6.0% to 8.5% per annum, and the weighted average Mortgage Rate as of the
Cut-off Date of such Mortgage Loans is expected to be between 7.02% and 7.06%
per annum. The original principal balances of the Pool 3 Mortgage Loans are
expected to range from $25,450 to $987,500 and, as of the Cut-off Date, the
average Scheduled Principal Balance of such Mortgage Loans is not expected to
exceed $330,000 after application of payments due on or before the Cut-off Date.
It is expected that the month and year of the earliest origination date of any
Pool 3 Mortgage Loan will be February 1996 and the month and year of the latest
scheduled maturity date of any such Mortgage Loan will be July 2013. All of the
Pool 3 Mortgage Loans will have original terms to maturity of 10 to 15 years,
and it is expected that the weighted average scheduled remaining term to
maturity of such Mortgage Loans will be between 176 and 178 months as of the
Cut-off Date.
 
     The Pool 3 Mortgage Loans are expected to have the following additional
characteristics (by Scheduled Principal Balance of all the Pool 3 Mortgage
Loans) as of the Cut-off Date:
 
          It is expected that no more than 40% of the Mortgaged Properties
     relating to the Pool 3 Mortgage Loans will be located in California. The
     majority of the Pool 3 Mortgage Loans will be secured by Mortgaged
     Properties located in California, Massachusetts, Florida, Georgia,
     Maryland, New Jersey, New York and North Carolina. No more than 3% of such
     Mortgage Loans will be secured by Mortgaged Properties located in any one
     state except the states specified in the preceding sentence.
 
          No more than 12% of the Pool 3 Mortgage Loans will have a Scheduled
     Principal Balance of more than $500,000 and up to and including $750,000.
     No more than 2% of the Pool 3 Mortgage Loans will have a Scheduled
     Principal Balance of more than $750,000 and up to and including $1,000,000.
     None of the Pool 3 Mortgage Loans will have a Scheduled Principal Balance
     of more than $1,000,000.
 
                                      A3-1
<PAGE>

          No more than 6% of such Mortgage Loans will have a loan-to-value ratio
     at origination in excess of 80%, no more than 2% of such Mortgage Loans
     will have a loan-to-value ratio at origination in excess of 90%, and none
     of such Mortgage Loans will have a loan-to-value ratio at origination in
     excess of 95%. As of the Cut-off Date, the weighted average loan-to-value
     ratio at origination of such Mortgage Loans is expected to be between 67%
     and 69%.
 
          No more than 1.5% of such Mortgage Loans will have a loan-to-value
     ratio at origination calculated based on an appraisal conducted more than
     one year before the origination date thereof.
 
          The proceeds of at least 25% of such Mortgage Loans will have been
     used to acquire the related Mortgaged Property. The proceeds of the
     remainder of such Mortgage Loans will have been used to refinance an
     existing loan. No more than 18% of such Mortgage Loans will have been the
     subject of 'cash-out' refinancings.
 
          None of such Mortgage Loans will be temporary buy-down Mortgage Loans.
 
          No more than 2% of such Mortgage Loans will be secured by Mortgaged
     Properties located in any one postal zip code area.
 
          At least 94% of such Mortgage Loans will be secured by Mortgaged
     Properties determined by the Company to be the primary residence of the
     Mortgagor. The basis for such determination will be the making of a
     representation by the Mortgagor at origination that the underlying property
     will be used as the Mortgagor's primary residence.
 
          At least 90% of such Mortgage Loans will be secured by single-family,
     detached residences. No more than 7% of such Mortgage Loans will be secured
     by condominiums.
 
          None of such Mortgage Loans are Cooperative Loans (see 'The Trust
     Fund--The Mortgage Loans' in the Prospectus) secured by shares of stock in
     cooperative housing corporations and assignments of the proprietary leases
     to cooperative apartment units therein.
 
          Federal emergency aid has been made available to property owners in
     several areas of California and several other states as a result of recent
     flooding, ice storms and in California, landslides. Approximately 54% (by
     Scheduled Principal Balance as of the Cut-off Date) of the Pool 3 Mortgage
     Loans (68% of which are located in California) are secured by related
     Mortgaged Properties located in the 63 counties (22 of which are in
     California) known to be affected by such conditions, and it is unknown
     whether additional areas may be affected by such conditions. In addition,
     due to recent wildfires occurring in widespread areas of Florida, the
     Federal Emergency Management Agency has announced that federal emergency
     aid will be available to homeowners throughout Florida affected by such
     fires. Approximately 5.5% (by Scheduled Principal Balance as of the Cut-off
     Date) of the Pool 3 Mortgage Loans are secured by Mortgaged Properties
     located in Florida. The Company has not undertaken the physical inspection
     of any such Mortgaged Property and, as a result, there can be no assurance
     that material damage to any Mortgaged Property in such affected areas has
     not occurred.
 
          Under the Agreement, the Company will represent and warrant that each
     Pool 3 Mortgaged Property is free of material damage and in good repair as
     of the date of issuance of the Certificates. In the event of an uncured
     breach of such representation and warranty that materially and adversely
     affects the interests of Certificateholders, the Company will be required
     to repurchase the affected Pool 3 Mortgage Loan or substitute another
     mortgage loan therefor. If any damage caused by the flooding, ice storms or
     landslides occurs after the Closing Date, the Company will have no such
     obligation. In addition, the standard hazard policies covering the
     Mortgaged Properties generally do not cover damage caused by flooding and
     landslides, and flood or landslide insurance may not have been obtained
     with respect to such Mortgaged Properties. To the extent that any insurance
     proceeds received with respect to any damaged Pool 3 Mortgaged Properties
     are not applied to the restoration thereof, such proceeds will be used to
     prepay the related Pool 3 Mortgage Loans in whole or in part. Any
     repurchases or prepayments of the Pool 3 Mortgage Loans may reduce the
     weighted average lives of the Certificates offered hereby and will reduce
     the yields on any Classes of Pool 3 Certificates purchased at a premium.
 
                                      A3-2

<PAGE>

DISTRIBUTIONS ON THE POOL 3 CERTIFICATES
 
     Allocation of Pool 3 Available Funds.  Interest and principal on the Pool 3
Certificates will be distributed monthly on each Distribution Date commencing in
August 1998 in an aggregate amount equal to the Pool 3 Available Funds for such
Distribution Date.
 
     On each Distribution Date, the Pool 3 Available Funds will be distributed
in the following order of priority among the Certificates:
 
          first, to the Classes of Pool 3 Senior Certificates (other than the
     Class 3-PO Certificates), the Accrued Certificate Interest on each such
     Class for such Distribution Date, any shortfall in available amounts being
     allocated among such Classes in proportion to the amount of Accrued
     Certificate Interest otherwise distributable thereon;
 
          second, to the Classes of Pool 3 Senior Certificates (other than the
     Class 3-PO Certificates), any Accrued Certificate Interest thereon
     remaining undistributed from previous Distribution Dates, to the extent of
     remaining Pool 3 Available Funds, any shortfall in available amounts being
     allocated among such Classes in proportion to the amount of such Accrued
     Certificate Interest remaining undistributed for each such Class for such
     Distribution Date;
 
          third, to the Classes of Pool 3 Senior Certificates in reduction of
     the Class Certificate Principal Balances thereof, to the extent of
     remaining funds, concurrently, as follows:
 
             (a) to the Class 3-A1, Class 3-A2, Class 3-A3, Class 3-A4 and Class
        3-R Certificates, the Pool 3 Senior Optimal Principal Amount for such
        Distribution Date, concurrently, as follows:
 
                (1) to the Class 3-R and Class 3-A4 Certificates, approximately
           70.8994771969% of the amount set forth in clause (a), sequentially,
           as follows:
 
                    (A) to the Class 3-R Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
               and
 
                    (B) to the Class 3-A4 Certificates, until the Class
               Certificate Principal Balance thereof has been reduced to zero;
               and
 
                (2) to the Class 3-A1, Class 3-A2 and Class 3-A3 Certificates,
           approximately 29.1005228031% of the amount set forth in clause (a),
           sequentially, as follows:
 
                    (A) to the Class 3-A3 Certificates (the 'Pool 3 Group II
               Senior Certificates'), the Class 3-A3 Principal Distribution
               Amount (as defined herein) for such Distribution Date, until the
               Class Certificate Principal Balance thereof has been reduced to
               zero; and
 
                    (B) to the Class 3-A1 and Class 3-A2 Certificates (together,
               the 'Pool 3 Group I Senior Certificates'), the amount set forth
               in clause (a)(2) above, less the Class 3-A3 Principal
               Distribution Amount for such Distribution Date, sequentially, as
               follows:
 
                         (I) to the Class 3-A1 Certificates, until the Class
                   Certificate Principal Balance thereof has been reduced to
                   zero; and
 
                        (II) to the Class 3-A2 Certificates, until the Class
                   Certificate Principal Balance thereof has been reduced to
                   zero; and
 
             (b) to the Class 3-PO Certificates, the Class 3-PO Principal
        Distribution Amount for such Distribution Date, until the Class
        Certificate Principal Balance thereof has been reduced to zero;
 
          fourth, to the Class 3-PO Certificates, to the extent of remaining
     Pool 3 Available Funds, the Class 3-PO Deferred Amount for such
     Distribution Date, until the Class Certificate Principal Balance thereof
     has been reduced to zero; provided that, (i) on any Distribution Date,
     distributions pursuant to this priority fourth shall not exceed the Pool 3
     Junior Optimal Principal Amount for such Distribution Date, (ii) such
     distributions shall not reduce the Class Certificate Principal Balance of
     the Class 3-PO Certificates and (iii) no distribution will be made in
     respect of the Class 3-PO Deferred Amount after the Distribution
 
                                      A3-3

<PAGE>

     Date on which the respective Class Certificate Principal Balances of the
     Pool 3 Junior Certificates have been reduced to zero (the 'Pool 3
     Cross-Over Date');
 
          fifth, to the Class 3-M Certificates, to the extent of remaining Pool
     3 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date;
 
          sixth, to the Class 3-B1 Certificates, to the extent of remaining Pool
     3 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date;
 
          seventh, to the Class 3-B2 Certificates, to the extent of remaining
     Pool 3 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date; and
 
          eighth, to the Class 3-B3, Class 3-B4 and Class 3-B5 Certificates, to
     the extent of remaining Pool 3 Available Funds: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Classes' Allocable Shares for such Distribution Date.
 
     'Pro rata' distributions among Classes of Certificates will be made in
proportion to the then-current Class Certificate Principal Balances of such
Classes.
 
     The percentages set forth in priority third above were calculated on the
basis of the Class Certificate Principal Balances of the related Certificates
set forth on the cover hereof. If such Class Certificate Principal Balances are
increased or decreased in accordance with the variance permitted hereby, the
applicable percentages will be increased or decreased substantially
correspondingly.
 
     On each Distribution Date after the Pool 3 Cross-Over Date, distributions
of principal on the outstanding Pool 3 Senior Certificates will be made pro rata
among all such Certificates, regardless of the allocation, or sequential nature,
of the principal payments described in priority third above.
 
     If, after distributions have been made pursuant to priorities first and
second above on any Distribution Date, the remaining Pool 3 Available Funds are
less than the sum of the amounts required to be distributed in accordance with
priority third above, the Pool 3 Senior Optimal Principal Amount and the Class
3-PO Principal Distribution Amount for such Distribution Date shall be
proportionately reduced, and such remaining Pool 3 Available Funds will be
distributed on the Pool 3 Senior Certificates in accordance with the applicable
clauses of priority third above on the basis of such reduced amounts.
Notwithstanding such allocation, Realized Losses in respect of Pool 3 will be
allocated to the Pool 3 Certificates as described under '--Allocation of
Realized Losses on the Pool 3 Certificates' herein.
 
     Interest.  Interest will accrue on the Pool 3 Certificates offered hereby
at the respective fixed Certificate Interest Rates set forth on the cover hereof
during each Interest Accrual Period. Interest will be calculated on the basis of
a 360-day year consisting of twelve 30-day months.
 
     Interest will accrue on the Class 3-B3, Class 3-B4 and Class 3-B5
Certificates at the Certificate Interest Rate of 6.50% per annum during each
Interest Accrual Period.
 
     The Class 3-PO Certificates are principal-only Certificates and will not
accrue interest.
 
     The 'Accrued Certificate Interest' for any Pool 3 Certificate (other than a
Class 3-PO Certificate) for any Distribution Date will equal the interest
accrued during the related Interest Accrual Period at the applicable Certificate
Interest Rate on the Certificate Principal Balance of such Certificate
immediately prior to such Distribution Date, less such Certificate's share of
any allocable Net Interest Shortfall (as defined below), the interest portion of
any Excess Losses (as defined herein) allocable to Certificateholders through
the Pool 3 Cross-Over Date and, after the Pool 3 Cross-Over Date, the interest
portion of Realized Losses allocable to Certificateholders including Excess
Losses, in each case in respect of the Pool 3 Mortgage Loans.
 
                                      A3-4

<PAGE>

     The 'Certificate Principal Balance' of any Pool 3 Certificate as of any
Distribution Date will equal such Certificate's Certificate Principal Balance on
the Closing Date as reduced by (i) all amounts distributed on previous
Distribution Dates on such Certificate on account of principal, (ii) the
principal portion of all Realized Losses previously allocated to such
Certificate and (iii) in the case of a Pool 3 Junior Certificate, such
Certificate's pro rata share, if any, of the Pool 3 Junior Certificate Writedown
Amount (as defined below) and the Class 3-PO Deferred Payment Writedown Amount
(as defined below) for previous Distribution Dates. As of any Distribution Date,
the 'Pool 3 Junior Certificate Writedown Amount' will equal the amount by which
(a) the sum of the Class Certificate Principal Balances of all of the Pool 3
Certificates (after giving effect to the distribution of principal and the
application of Realized Losses in respect of the Pool 3 Mortgage Loans in
reduction of the Certificate Principal Balances of such Certificates on such
Distribution Date) exceeds (b) the aggregate Scheduled Principal Balance of the
Pool 3 Mortgage Loans on the first day of the month of such Distribution Date
less any applicable Deficient Valuations occurring on or prior to the Bankruptcy
Coverage Termination Date in respect of Pool 3. For any Distribution Date, the
'Class 3-PO Deferred Payment Writedown Amount' will equal the amount, if any,
distributed on such date in respect of the Class 3-PO Deferred Amount pursuant
to priority fourth under '--Allocation of Pool 3 Available Funds' above. The
Pool 3 Junior Certificate Writedown Amount and the Class 3-PO Deferred Payment
Writedown Amount will each be allocated to the Classes of Pool 3 Junior
Certificates in inverse order of priority, until the Class Certificate Principal
Balance of each such Class has been reduced to zero.
 
     For the definitions of 'Interest Accrual Period,' 'Net Interest Shortfall'
and 'Interest Shortfall,' see 'Pool 1 Annex--Distributions on the Pool 1
Certificates--Interest' herein.
 
     Any Net Interest Shortfall, the interest portion of any Excess Losses
allocable to Pool 3 Certificateholders through the Pool 3 Cross-Over Date and,
after the Pool 3 Cross-Over Date, the interest portion of any Realized Losses
allocable to Certificateholders (see '--Allocation of Realized Losses on the
Pool 3 Certificates' herein), in each case in respect of the Pool 3 Mortgage
Loans, will, on each Distribution Date, be allocated among all the outstanding
Pool 3 Certificates (other than the Class 3-PO Certificates), in proportion to
the amount of Accrued Certificate Interest that would have been allocated
thereto in the absence of such shortfall and losses. See 'The Pooling and
Servicing Agreement--Servicing Compensation, Compensating Interest and Payment
of Expenses' herein.
 
     The interest portion of any Realized Losses (other than Excess Losses) in
respect of the Pool 3 Mortgage Loans occurring prior to the Pool 3 Cross-Over
Date will not be allocated among any Pool 3 Certificates, but will reduce the
amount of Pool 3 Available Funds on the related Distribution Date. As a result
of the subordination of the Pool 3 Junior Certificates in right of distribution
relative to the Pool 3 Senior Certificates, such losses will be borne first by
the Pool 3 Junior Certificates (to the extent then outstanding) in inverse order
of priority.
 
     If the Pool 3 Available Funds are insufficient on any Distribution Date to
distribute the aggregate Accrued Certificate Interest on the Pool 3 Senior
Certificates (other than the Class 3-PO Certificates) to their
Certificateholders, any shortfall in available amounts will be allocated among
such Classes of Pool 3 Senior Certificates in proportion to the amounts of
Accrued Certificate Interest otherwise distributable thereon on such
Distribution Date. The amount of any such undistributed Accrued Certificate
Interest will be added to the amount to be distributed in respect of interest on
the Pool 3 Senior Certificates (other than the Class 3-PO Certificates) on
subsequent Distribution Dates in accordance with priority second under
'--Allocation of Pool 3 Available Funds' above. No interest will accrue on any
Accrued Certificate Interest remaining undistributed from previous Distribution
Dates.
 
     Principal.  All payments and other amounts received in respect of principal
of the Pool 3 Mortgage Loans will be allocated between (i) the Pool 3
Certificates (other than the Class 3-PO Certificates), on the one hand, and (ii)
the Class 3-PO Certificates, on the other, in each case based on the applicable
Non-PO Percentage and the applicable PO Percentage, respectively, of such
amounts.
 
     The 'Non-PO Percentage' with respect to any Pool 3 Mortgage Loan with a Net
Mortgage Rate ('NMR') less than 6.50% per annum (each such Mortgage Loan, a
'Pool 3 Discount Mortgage Loan') will be the fraction, expressed as a
percentage, equal to NMR divided by 6.50%. The 'Non-PO Percentage' with respect
to any Pool 3 Mortgage Loan with a Net Mortgage Rate equal to or greater than
6.50% (each such Mortgage Loan, a 'Pool 3
 
                                      A3-5

<PAGE>

Non-Discount Mortgage Loan') will be 100%. The 'PO Percentage' with respect to
any Pool 3 Discount Mortgage Loan will be the fraction, expressed as a
percentage, equal to (6.50% - NMR) divided by 6.50%. The 'PO Percentage' with
respect to any Pool 3 Non-Discount Mortgage Loan will be 0%.
 
     The initial Class Certificate Principal Balance of the Class 3-PO
Certificates, which are not offered hereby, will be approximately $664,090
subject to the variance described herein.
 
     Distributions in reduction of the Class Certificate Principal Balance of
each Pool 3 Senior Certificate will be made on each Distribution Date pursuant
to priority third under '--Allocation of Pool 3 Available Funds' above. In
accordance with priority third, the Pool 3 Available Funds remaining after the
distribution of interest on the Pool 3 Senior Certificates (other than the Class
3-PO Certificates) will be allocated to such Certificates in an aggregate amount
not to exceed the sum of the Pool 3 Senior Optimal Principal Amount and the
Class 3-PO Principal Distribution Amount for such Distribution Date.
Distributions in reduction of the Class Certificate Principal Balances of the
Class 3-M, Class 3-B1 and Class 3-B2 Certificates will be made pursuant to
priorities fifth, sixth and seventh, respectively, under '--Allocation of Pool 3
Available Funds' above. In accordance with each such priority, the Pool 3
Available Funds, if any, remaining after distributions of principal and interest
on the Pool 3 Senior Certificates and payments in respect of the Class 3-PO
Deferred Amount on such Distribution Date will be allocated to the Class 3-M,
Class 3-B1 and Class 3-B2 Certificates in an amount equal to each such Class's
Allocable Share for such Distribution Date, provided that no distribution of
principal will be made on any such Class until any related Class ranking prior
thereto has received distributions of interest and principal, and such Class has
received distributions of interest, on such Distribution Date. The Pool 3 Group
II Senior Certificates will not receive any distributions in respect of
principal prepayments or certain other unscheduled recoveries of principal on
the Pool 3 Mortgage Loans during the first five years after the Cut-off Date,
except as otherwise described herein on or following the earlier of the Pool 3
Group I Final Distribution Date or the Pool 3 Cross-Over Date.
 
     The 'Pool 3 Senior Optimal Principal Amount' with respect to each
Distribution Date will be an amount equal to the sum of (i) the Pool 3 Senior
Percentage (as defined herein) of the applicable Non-PO Percentage of all
scheduled payments of principal due on each Pool 3 Mortgage Loan on the first
day of the month in which the Distribution Date occurs, as specified in the
amortization schedule at the time applicable thereto (after adjustment for
previous principal prepayments and the principal portion of Debt Service
Reductions in respect of Pool 3 after the Pool 3 Bankruptcy Coverage Termination
Date, but before any adjustment to such amortization schedule by reason of any
other bankruptcy or similar proceeding or any moratorium or similar waiver or
grace period), (ii) the Pool 3 Senior Prepayment Percentage (as defined herein)
of the applicable Non-PO Percentage of the Scheduled Principal Balance of each
Pool 3 Mortgage Loan which was the subject of a prepayment in full received by
the Company (or, in the case of a Pool 3 Mortgage Loan master-serviced by the
Company, of which the Company receives notice) during the applicable Prepayment
Period (as defined below), (iii) the Pool 3 Senior Prepayment Percentage of the
applicable Non-PO Percentage of all partial prepayments of principal received in
respect of Pool 3 during the applicable Prepayment Period, (iv) the lesser of
(a) the Pool 3 Senior Prepayment Percentage of the applicable Non-PO Percentage
of the sum of (w) the net liquidation proceeds allocable to principal on each
Pool 3 Mortgage Loan which became a Liquidated Mortgage Loan during the related
Prepayment Period (other than Pool 3 Mortgage Loans described in clause (x)) and
(x) the principal balance of each Pool 3 Mortgage Loan that was purchased by a
private mortgage insurer during the related Prepayment Period as an alternative
to paying a claim under the related insurance policy, and (b) the Pool 3 Senior
Percentage of the applicable Non-PO Percentage of the sum of (w) the Scheduled
Principal Balance of each Pool 3 Mortgage Loan which became a Liquidated
Mortgage Loan during the related Prepayment Period (other than Pool 3 Mortgage
Loans described in clause (x)) and (x) the Scheduled Principal Balance of each
Pool 3 Mortgage Loan that was purchased by a private mortgage insurer during the
related Prepayment Period as an alternative to paying a claim under the related
insurance policy less (y) in the case of clause (b), the Pool 3 Senior
Percentage of the applicable Non-PO Percentage of the principal portion of
Excess Losses (other than Debt Service Reductions) in respect of Pool 3 during
the related Prepayment Period, and (v) the Pool 3 Senior Prepayment Percentage
of the applicable Non-PO Percentage of the sum of (a) the Scheduled Principal
Balance of each Pool 3 Mortgage Loan which was repurchased by the Company in
connection with such Distribution Date and (b) the difference, if any, between
the Scheduled Principal Balance of a Pool 3 Mortgage Loan that has been replaced
by the Company with a substitute Pool 3 Mortgage Loan pursuant to the Agreement
in connection with such Distribution Date and the Scheduled Principal Balance of
such substitute Pool 3 Mortgage Loan.
 
                                      A3-6

<PAGE>

     With respect to any Pool 3 Mortgage Loan that was the subject of a
voluntary prepayment in full and any Distribution Date, the 'Prepayment Period'
is the period from the sixteenth day of the month preceding the month of such
Distribution Date (or, in the case of the first Distribution Date, from the
Cut-off Date) through the fifteenth day of the month of such Distribution Date.
With respect to any other unscheduled prepayment of principal of any Pool 3
Mortgage Loan and any Distribution Date, the Prepayment Period is the month
preceding the month of such Distribution Date.
 
     The 'Class 3-A3 Principal Distribution Amount' for any Distribution Date
will equal the sum of (a) the total of the amounts described in clauses (i) and
(iv) of the definition of Pool 3 Senior Optimal Principal Amount for such date
multiplied by the Class 3-A3 Percentage for such date, and (b) the total of the
amounts described in clauses (ii), (iii) and (v) of the definition of Pool 3
Senior Optimal Principal Amount for such date multiplied by the product of (x)
the Class 3-A3 Percentage for such date and (y) the Class 3-A3 Prepayment
Distribution Percentage for such date. Notwithstanding the foregoing, (i) on the
Pool 3 Group I Final Distribution Date, the Class 3-A3 Principal Distribution
Amount will be increased by any remaining amounts pursuant to clause (a)(2) of
priority third above after distributions of principal have been made on the Pool
3 Group I Senior Certificates, and (ii) following the Pool 3 Group I Final
Distribution Date, the Class 3-A3 Principal Distribution Amount will equal the
amount set forth in clause (a)(2) of priority third above.
 
     The 'Class 3-A3 Prepayment Distribution Percentage' for any Distribution
Date will equal 0% through the Distribution Date in July 2003; 30% thereafter
through the Distribution Date in July 2004; 40% thereafter through the
Distribution Date in July 2005; 60% thereafter through the Distribution Date in
July 2006; 80% thereafter through the Distribution Date in July 2007; and 100%
thereafter.
 
     The 'Class 3-A3 Percentage' for any Distribution Date will equal the
percentage (carried to six places rounded up) obtained by dividing (x) the Class
Certificate Principal Balance of the Class 3-A3 Certificates immediately
preceding such Distribution Date by (y) the aggregate Class Certificate
Principal Balance of all the Pool 3 Senior Certificates (other than the Class
3-PO Certificates) immediately preceding such Distribution Date. The initial
Class 3-A3 Percentage is expected to be approximately 5.820105%.
 
     The 'Pool 3 Senior Percentage' on any Distribution Date will equal the
lesser of (i) 100% and (ii) the percentage (carried to six places rounded up)
obtained by dividing the aggregate Certificate Principal Balances of all the
Pool 3 Senior Certificates (less the Class Certificate Principal Balance of the
Class 3-PO Certificates) immediately preceding such Distribution Date by the
aggregate Certificate Principal Balances of all the Pool 3 Certificates (less
the Class Certificate Principal Balance of the Class 3-PO Certificates)
immediately preceding such Distribution Date. The initial Pool 3 Senior
Percentage is expected to be approximately 97.99%.
 
     The 'Pool 3 Senior Prepayment Percentage' on any Distribution Date
occurring during the periods set forth below will be as follows:
 
<TABLE>
<CAPTION>
PERIOD (DATES INCLUSIVE)                    POOL 3 SENIOR PREPAYMENT PERCENTAGE
<S>                                         <C>
August 1998 - July 2003                     100%                                            
August 2003 - July 2004                     Pool 3 Senior Percentage plus 70% of the Pool 3 Junior
                                            Percentage                                            
August 2004 - July 2005                     Pool 3 Senior Percentage plus 60% of the Pool 3 Junior
                                            Percentage                                            
August 2005 - July 2006                     Pool 3 Senior Percentage plus 40% of the Pool 3 Junior
                                            Percentage                                            
August 2006 - July 2007                     Pool 3 Senior Percentage plus 20% of the Pool 3 Junior
                                            Percentage
August 2007 and thereafter                  Pool 3 Senior Percentage
</TABLE>
 
     Notwithstanding the foregoing, if the Pool 3 Senior Percentage on any
Distribution Date exceeds the initial Pool 3 Senior Percentage, the Pool 3
Senior Prepayment Percentage for such Distribution Date will equal 100%.
 
     In addition, no reduction of the Pool 3 Senior Prepayment Percentage below
the level in effect for the most recent prior period specified in the table
above shall be effective on any Distribution Date (such limitation being the
'Pool 3 Senior Prepayment Percentage Stepdown Limitation') unless, as of the
last day of the month preceding such Distribution Date, either:
 
          (A)(i) the aggregate Scheduled Principal Balance of Pool 3 Mortgage
     Loans delinquent 60 days or more (including for this purpose any Pool 3
     Mortgage Loans in foreclosure and Pool 3 Mortgage Loans with respect to
     which the related Mortgaged Property has been acquired by the Trust Fund
     for Pool 3) does not exceed 50% of the aggregate Class Certificate
     Principal Balance of the Pool 3 Junior Certificates as of such date and
     (ii) cumulative Realized Losses in respect of Pool 3 do not exceed (a) 30%
     of the aggregate Class Certificate Principal Balance of the Pool 3 Junior
     Certificates as of the date of issuance of the
 
                                      A3-7

<PAGE>

     Certificates (the 'Original Pool 3 Junior Principal Balance') if such
     Distribution Date occurs between and including August 2003 and July 2004,
     (b) 35% of the Original Pool 3 Junior Principal Balance if such
     Distribution Date occurs between and including August 2004 and July 2005,
     (c) 40% of the Original Pool 3 Junior Principal Balance if such
     Distribution Date occurs between and including August 2005 and July 2006,
     (d) 45% of the Original Pool 3 Junior Principal Balance if such
     Distribution Date occurs between and including August 2006 and July 2007,
     and (e) 50% of the Original Pool 3 Junior Principal Balance if such
     Distribution Date occurs during or after August 2007; or
 
          (B)(i) the aggregate Scheduled Principal Balance of Pool 3 Mortgage
     Loans delinquent 60 days or more (including for this purpose any Pool 3
     Mortgage Loans in foreclosure and Pool 3 Mortgage Loans with respect to
     which the related Mortgaged Property has been acquired by the Trust Fund
     for Pool 3), averaged over the last three months, as a percentage of the
     aggregate Scheduled Principal Balance of all Pool 3 Mortgage Loans averaged
     over the last three months, does not exceed 4%, and (ii) cumulative
     Realized Losses in respect of Pool 3 do not exceed (a) 10% of the Original
     Pool 3 Junior Principal Balance if such Distribution Date occurs between
     and including August 2003 and July 2004, (b) 15% of the Original Pool 3
     Junior Principal Balance if such Distribution Date occurs between and
     including August 2004 and July 2005, (c) 20% of the Original Pool 3 Junior
     Principal Balance if such Distribution Date occurs between and including
     August 2005 and July 2006, (d) 25% of the Original Pool 3 Junior Principal
     Balance if such Distribution Date occurs between and including August 2006
     and July 2007, and (e) 30% of the Original Pool 3 Junior Principal Balance
     if such Distribution Date occurs during or after August 2007.
 
     The 'Class 3-PO Principal Distribution Amount' with respect to each
Distribution Date will be an amount equal to the sum of (i) the applicable PO
Percentage of all scheduled payments of principal due on each Pool 3 Mortgage
Loan on the first day of the month in which the Distribution Date occurs, as
specified in the amortization schedule at the time applicable thereto (after
adjustment for previous principal prepayments and the principal portion of Debt
Service Reductions in respect of Pool 3 after the Bankruptcy Coverage
Termination Date in respect of Pool 3, but before any adjustment to such
amortization schedule by reason of any other bankruptcy or similar proceeding or
any moratorium or similar waiver or grace period), (ii) the applicable PO
Percentage of the Scheduled Principal Balance of each Pool 3 Mortgage Loan which
was the subject of a prepayment in full received by the Company (or, in the case
of a Pool 3 Mortgage Loan master-serviced by the Company, of which the Company
receives notice) during the related Prepayment Period, (iii) the applicable PO
Percentage of all partial prepayments of principal received during the related
Prepayment Period, (iv) the applicable PO Percentage of the sum of (w) the net
liquidation proceeds allocable to principal on each Pool 3 Mortgage Loan which
became a Liquidated Mortgage Loan during the related Prepayment Period (other
than Pool 3 Mortgage Loans described in clause (x)) and (x) the principal
balance of each Pool 3 Mortgage Loan that was purchased by a private mortgage
insurer during the related Prepayment Period as an alternative to paying a claim
under the related insurance policy, and (v) the applicable PO Percentage of the
sum of (a) the Scheduled Principal Balance of each Pool 3 Mortgage Loan which
was repurchased by the Company in connection with such Distribution Date and (b)
the difference, if any, between the Scheduled Principal Balance of a Pool 3
Mortgage Loan that has been replaced by the Company with a substitute Pool 3
Mortgage Loan pursuant to the Agreement in connection with such Distribution
Date and the Scheduled Principal Balance of such substitute Pool 3 Mortgage
Loan. For purposes of clauses (ii) and (v) above, the Scheduled Principal
Balance of a Pool 3 Mortgage Loan will be reduced by the amount of any Deficient
Valuation that occurred on or before the Pool 3 Bankruptcy Coverage Termination
Date.
 
     The 'Pool 3 Group I Final Distribution Date' is the Distribution Date on
which the Class Certificate Principal Balance of each of the Pool 3 Group I
Senior Certificates has been reduced to zero.
 
     The 'Pool 3 Junior Percentage' on any Distribution Date will equal 100%
minus the Pool 3 Senior Percentage. The 'Pool 3 Junior Prepayment Percentage'
will equal 100% minus the Pool 3 Senior Prepayment Percentage, except that on
any Distribution Date after the respective Class Certificate Principal Balances
of the Pool 3 Senior Certificates (other than the Class 3-PO Certificates) have
each been reduced to zero (the 'Pool 3 Senior Final Distribution Date'), the
Pool 3 Junior Prepayment Percentage will equal 100%. The initial Pool 3 Junior
Percentage is expected to be approximately 2.01%.
 
     The 'Pool 3 Junior Optimal Principal Amount' with respect to each
Distribution Date will be an amount equal to the sum of the following (but in no
event greater than the aggregate Class Certificate Principal Balances
 
                                      A3-8

<PAGE>

of the Pool 3 Junior Certificates immediately prior to such Distribution Date):
(i) the Pool 3 Junior Percentage of the applicable Non-PO Percentage of all
scheduled payments of principal due on each outstanding Pool 3 Mortgage Loan on
the first day of the month in which the Distribution Date occurs, as specified
in the amortization schedule at the time applicable thereto (after adjustment
for previous principal prepayments and the principal portion of Debt Service
Reductions in respect of Pool 3 after the Pool 3 Bankruptcy Coverage Termination
Date, but before any adjustment to such amortization schedule by reason of any
other bankruptcy or similar proceeding or any moratorium or similar waiver or
grace period), (ii) the Pool 3 Junior Prepayment Percentage of the applicable
Non-PO Percentage of the Scheduled Principal Balance of each Pool 3 Mortgage
Loan which was the subject of a prepayment in full received by the Company (or,
in the case of a Pool 3 Mortgage Loan master-serviced by the Company, of which
the Company receives notice) during the related Prepayment Period, (iii) the
Pool 3 Junior Prepayment Percentage of the applicable Non-PO Percentage of all
partial prepayments of principal received in respect of Pool 3 during the
related Prepayment Period (plus, on the Pool 3 Senior Final Distribution Date,
100% of any Pool 3 Senior Optimal Principal Amount remaining undistributed on
each date), (iv) the excess, if any, of the sum of (a) the applicable Non-PO
Percentage of the net liquidation proceeds allocable to principal received
during the related Prepayment Period in respect of each Liquidated Mortgage Loan
in Pool 3 (other than Pool 3 Mortgage Loans described in clause (b)) and (b) the
applicable Non-PO Percentage of the principal balance of each Pool 3 Mortgage
Loan that was purchased by a private mortgage insurer during the related
Prepayment Period as an alternative to paying a claim under the related
insurance policy over (c) the sum of the amounts distributable to the Pool 3
Senior Certificateholders (other than the holders of the Class 3-PO
Certificates) pursuant to clause (iv) of the definition of Pool 3 Senior Optimal
Principal Amount on such Distribution Date, and (v) the Pool 3 Junior Prepayment
Percentage of the applicable Non-PO Percentage of the sum of (a) the Scheduled
Principal Balance of each Pool 3 Mortgage Loan which was repurchased by the
Company in connection with such Distribution Date and (b) the difference, if
any, between the Scheduled Principal Balance of a Pool 3 Mortgage Loan that has
been replaced by the Company with a substitute Pool 3 Mortgage Loan pursuant to
the Agreement in connection with such Distribution Date and the Scheduled
Principal Balance of such substitute Pool 3 Mortgage Loan.
 
     The 'Allocable Share' with respect to any Class of Pool 3 Junior
Certificates on any Distribution Date will generally equal such Class's pro rata
share (based on the Class Certificate Principal Balance of each Class entitled
thereto) of each of the components of the Pool 3 Junior Optimal Principal Amount
described above; provided, that, except as described in the second succeeding
sentence, no Class 3-B Certificate shall be entitled on any Distribution Date to
receive distributions pursuant to clauses (ii), (iii) and (v) of the definition
of Pool 3 Junior Optimal Principal Amount unless the Class Prepayment
Distribution Trigger for the related Class is satisfied for such Distribution
Date. The 'Class Prepayment Distribution Trigger' for a Class of Class 3-B
Certificates for any Distribution Date is satisfied if the fraction (expressed
as a percentage), the numerator of which is the aggregate Class Certificate
Principal Balance of such Class and each Class subordinate thereto, if any, and
the denominator of which is the aggregate Scheduled Principal Balance of the
Pool 3 Mortgage Loans with respect to such Distribution Date, equals or exceeds
such percentage calculated as of the Closing Date. If, on any Distribution Date,
the Class Certificate Principal Balance of the Class 3-M Certificates or of any
Class of Class 3-B Certificates for which the related Class Prepayment
Distribution Trigger was satisfied on such Distribution Date is reduced to zero,
any amounts distributable to such Class pursuant to clauses (ii), (iii) and (v)
of the definition of Pool 3 Junior Optimal Principal Amount, to the extent of
such Class's remaining Allocable Share, shall be distributed to the remaining
Classes of Pool 3 Junior Certificates in reduction of their respective Class
Certificate Principal Balances in order of priority. If the Class Prepayment
Distribution Trigger is not satisfied for any Class of Class 3-B Certificates on
any Distribution Date, this may have the effect of accelerating the amortization
of more senior ranking Classes of Pool 3 Junior Certificates. On any
Distribution Date, any reduction in funds available for distribution to the
Classes of Pool 3 Junior Certificates resulting from a distribution of the Class
3-PO Deferred Amount to the Class 3-PO Certificates will be allocated to the
Classes of Pool 3 Junior Certificates, in reduction of the Allocable Shares
thereof, in inverse order of priority.
 
     Example of Distributions.  For an example of hypothetical distributions on
the Certificates for a particular Distribution Date, see 'Description of the
Certificates--Example of Distributions' in the accompanying Prospectus.
 
                                      A3-9

<PAGE>

ALLOCATION OF REALIZED LOSSES ON THE POOL 3 CERTIFICATES
 
     For the definitions of 'Realized Loss,' 'Liquidated Mortgage Loan,'
'Deficient Valuation,' 'Debt Service Reduction,' 'Bankruptcy Loss,' 'Fraud
Loss,' 'Excess Loss' and 'Special Hazard Loss,' see 'Pool 1 Annex--Allocation of
Realized Losses on the Pool 1 Certificates.'
 
     On each Distribution Date, the applicable PO Percentage of the principal
portion of any Realized Loss (including any Excess Loss, but not including any
Debt Service Reduction) on a Pool 3 Discount Mortgage Loan will be allocated to
the Class 3-PO Certificates until the Class Certificate Principal Balance
thereof is reduced to zero. With respect to any Distribution Date through the
Pool 3 Cross-Over Date, the aggregate of all amounts so allocable to the Class
3-PO Certificates on such date in respect of Realized Losses other than Excess
Losses in respect of the Pool 3 Discount Mortgage Loans and all amounts
previously allocated in respect of such losses to the Class 3-PO Certificates
and not distributed on prior Distribution Dates will be the 'Class 3-PO Deferred
Amount.' To the extent funds are available therefor on any Distribution Date
through the Pool 3 Cross-Over Date, distributions in respect of the Class 3-PO
Deferred Amount will be made on the Class 3-PO Certificates in accordance with
priority fourth under '--Distributions on the Pool 3 Certificates--Allocation of
Pool 3 Available Funds' above. Any distribution of Pool 3 Available Funds in
respect of the Class 3-PO Deferred Amount will not reduce the Class Certificate
Principal Balance of the Class 3-PO Certificates. No interest will accrue on the
Class 3-PO Deferred Amount. On each Distribution Date through the Pool 3
Cross-Over Date, the Class Certificate Principal Balance of the lowest ranking
Class of Pool 3 Junior Certificates then outstanding will be reduced by the
amount of any distributions in respect of the Class 3-PO Deferred Amount on such
Distribution Date, through the operation of the Class 3-PO Deferred Payment
Writedown Amount. After the Pool 3 Cross-Over Date, no distributions will be
made in respect of, and losses allocated to the Class 3-PO Certificates will not
be added to, the Class 3-PO Deferred Amount. Any distribution of Unanticipated
Recoveries (as defined in the accompanying Prospectus) in respect of Pool 3 on
the Class 3-PO Certificates will be adjusted to take into account the Class 3-PO
Deferred Amount previously paid to such Class as specified in the Agreement. See
'Servicing of the Mortgage Loans and Contracts--Unanticipated Recoveries of
Losses on the Mortgage Loans' in the accompanying Prospectus.
 
     The applicable Non-PO Percentage of the principal portion of any Realized
Loss (other than an Excess Loss or a Debt Service Reduction) on a Pool 3
Mortgage Loan for any Distribution Date will not be allocated to any Pool 3
Senior Certificates until the Pool 3 Cross-Over Date. Prior to the Pool 3
Cross-Over Date (and on such date under certain circumstances), the applicable
Non-PO Percentage of the principal portion of any such Realized Loss will be
allocated among the outstanding Classes of Pool 3 Junior Certificates, in
inverse order of priority, until the Class Certificate Principal Balance of each
such Class has been reduced to zero (i.e., such Realized Losses will be
allocated first to the Class 3-B5 Certificates while such Certificates are
outstanding, second to the Class 3-B4 Certificates, and so on). The applicable
Non-PO Percentage of the principal portion of any Excess Loss (other than a Debt
Service Reduction) on a Pool 3 Mortgage Loan for any Distribution Date will be
allocated pro rata among all outstanding Classes of Pool 3 Certificates (other
than the Class 3-PO Certificates) based on their Class Certificate Principal
Balances. Commencing on the Pool 3 Cross-Over Date, the applicable Non-PO
Percentage of the principal portion of any Realized Loss (other than a Debt
Service Reduction) in respect of the Pool 3 Mortgage Loans will be allocated
among the outstanding Classes of Pool 3 Senior Certificates (other than the
Class 3-PO Certificates) pro rata based upon their Class Certificate Principal
Balances.
 
     No reduction of the Class Certificate Principal Balance of any Class of
Pool 3 Certificates will be made on any Distribution Date on account of any
Realized Loss to the extent that such reduction would have the effect of
reducing the aggregate Certificate Principal Balance of all of the Pool 3
Certificates as of such Distribution Date to an amount less than the Pool
Scheduled Principal Balance of Pool 3 as of the first day of the month of such
Distribution Date, less any Deficient Valuations in respect of Pool 3 Mortgage
Loans occurring on or prior to the Pool 3 Bankruptcy Coverage Termination Date
(such limitation being the 'Pool 3 Loss Allocation Limitation').
 
                                     A3-10


<PAGE>

     The principal portion of Debt Service Reductions in respect of the Pool 3
Mortgage Loans will not be allocated in reduction of the Certificate Principal
Balance of any Pool 3 Certificate. However, after the Pool 3 Bankruptcy Coverage
Termination Date, the amounts distributable under clause (i) of each of the
definitions of Pool 3 Senior Optimal Principal Amount, Class 3-PO Principal
Distribution Amount and Pool 3 Junior Optimal Principal Amount will be reduced
by the amount of any Debt Service Reductions in respect of the Pool 3 Mortgage
Loans. Regardless of when they occur, such Debt Service Reductions may reduce
the amount of Pool 3 Available Funds otherwise available for distribution on a
Distribution Date. As a result of the subordination of the Pool 3 Junior
Certificates in right of distribution relative to the Pool 3 Senior
Certificates, any Debt Service Reductions in respect of the Pool 3 Mortgage
Loans prior to the Pool 3 Bankruptcy Coverage Termination Date will be borne by
the Pool 3 Junior Certificates (to the extent then outstanding) in inverse order
of priority.
 
     All allocations of Realized Losses in respect of the Pool 3 Mortgage Loans
to a Class of Pool 3 Certificates will be accomplished on a Distribution Date by
reducing the applicable Class Certificate Principal Balance by the appropriate
share of any such losses occurring during the month preceding the month of such
Distribution Date and, accordingly, will be taken into account in determining
the distributions of principal and interest on the Pool 3 Certificates
commencing on the following Distribution Date, except that the aggregate amount
of the principal portion of any Realized Losses (other than Excess Losses and
Debt Service Reductions) to be allocated to the Class 3-PO Certificates on any
Distribution Date through the Pool 3 Cross-Over Date will also be taken into
account in determining distributions in respect of the Class 3-PO Deferred
Amount for such Distribution Date.
 
     The interest portion of all Realized Losses in respect of the Pool 3
Mortgage Loans will be allocated among the outstanding Classes of Pool 3
Certificates offered hereby to the extent described under '--Distributions on
the Pool 3 Certificates--Interest' above. For purposes of making certain
calculations under the Agreement, the interest portion of any Realized Loss in
respect of a Pool 3 Mortgage Loan will be allocated among the Base Servicing
Fee, the Supplemental Servicing Fee and interest at the excess of the Mortgage
Rate over the sum of the Base Servicing Fee and the Supplemental Servicing Fee
in proportion to the amount of accrued interest in respect of such Pool 3
Mortgage Loan that would have been so allocated in the absence of any such
shortfall.
 
     The applicable Non-PO Percentage of any Deficient Valuation in respect of a
Pool 3 Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 3 Junior Certificates until the Pool 3 Bankruptcy Coverage
Termination Date. The 'Pool 3 Bankruptcy Coverage Termination Date' is the
Distribution Date upon which the Pool 3 Bankruptcy Loss Amount has been reduced
to zero or a negative number (or the Pool 3 Cross-Over Date, if earlier). On
each Distribution Date, the 'Pool 3 Bankruptcy Loss Amount' will equal
approximately $100,000 (approximately 0.06% of the aggregate Scheduled Principal
Balances of the Pool 3 Mortgage Loans as of the Cut-off Date), subject to
reduction as described in the Agreement, minus the aggregate amount of previous
Bankruptcy Losses in respect of the Pool 3 Mortgage Loans. The Pool 3 Bankruptcy
Loss Amount and the manner of reduction thereof described in the Agreement may
be reduced or modified upon written confirmation from Fitch and S&P (each as
defined herein) to the effect that such reduction or modification will not
adversely affect the then current ratings of the Pool 3 Senior Certificates by
Fitch and S&P. Such reduction may adversely affect the coverage provided by
subordination with respect to Bankruptcy Losses in respect of the Pool 3
Mortgage Loans.
 
     The applicable Non-PO Percentage of any Fraud Loss in respect of a Pool 3
Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 3 Junior Certificates until the Pool 3 Fraud Coverage
Termination Date. The 'Pool 3 Fraud Coverage Termination Date' is the
Distribution Date upon which the Fraud Loss Amount has been reduced to zero or a
negative number (or the Pool 3 Cross-Over Date, if earlier). Upon the initial
issuance of the Certificates, the 'Pool 3 Fraud Loss Amount' will equal
approximately $1,760,024 (approximately 1.0% of the aggregate Scheduled
Principal Balances of the Pool 3 Mortgage Loans as of the Cut-off Date). As of
any Distribution Date prior to the first anniversary of the Cut-off Date, the
Pool 3 Fraud Loss Amount will equal approximately $1,760,024, minus the
aggregate amount of Fraud Losses that would have been allocated to the Pool 3
Junior Certificates in the absence of the Pool 3 Loss Allocation Limitation
since the Cut-off Date. As of any Distribution Date from the first to the fifth
anniversaries of the Cut-off Date, the Pool 3 Fraud Loss Amount will equal (1)
the lesser of (a) the Pool 3 Fraud Loss Amount as of the most recent anniversary
of the Cut-off Date and (b) 1% (from the first to but excluding the third
anniversaries of the Cut-off Date) or 0.5% (from and including the third to but
excluding the fifth anniversaries of the Cut-off Date) of the aggregate
outstanding principal balance of all of the Pool 3 Mortgage Loans as of the most
recent
 
                                     A3-11

<PAGE>

anniversary of the Cut-off Date minus (2) the Fraud Losses that would have been
allocated to the Pool 3 Junior Certificates in the absence of the Pool 3 Loss
Allocation Limitation since the most recent anniversary of the Cut-off Date. As
of any Distribution Date on or after the fifth anniversary of the Cut-off Date,
the Pool 3 Fraud Loss Amount shall be zero.
 
     The applicable Non-PO Percentage of any Special Hazard Loss in respect of a
Pool 3 Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 3 Junior Certificates until the Pool 3 Special Hazard
Termination Date. The 'Pool 3 Special Hazard Termination Date' is the
Distribution Date upon which the Pool 3 Special Hazard Loss Amount has been
reduced to zero or a negative number (or the Pool 3 Cross-Over Date, if
earlier). Upon the initial issuance of the Certificates, the 'Pool 3 Special
Hazard Loss Amount') will equal approximately $1,975,000 (approximately 1.12% of
the aggregate Scheduled Principal Balances of the Pool 3 Mortgage Loans as of
the Cut-off Date). As of any Distribution Date, the Pool 3 Special Hazard Loss
Amount will equal approximately $1,975,000 minus the sum of (i) the aggregate
amount of Special Hazard Losses that would have been previously allocated to the
Pool 3 Junior Certificates in the absence of the Pool 3 Loss Allocation
Limitation and (ii) the Pool 3 Adjustment Amount. For each anniversary of the
Cut-off Date, the 'Pool 3 Adjustment Amount' shall be equal to the amount, if
any, by which the Pool 3 Special Hazard Loss Amount (without giving effect to
the deduction of the Pool 3 Adjustment Amount for such anniversary) exceeds the
lesser of (A) an amount calculated by the Company and approved by each of Fitch
and S&P, which amount shall not be less than $500,000, and (B) the greater of
(x) 1% (or if greater than 1%, the highest percentage of Pool 3 Mortgage Loans
by principal balance secured by Mortgaged Properties in any California zip code)
of the outstanding principal balance of all the Pool 3 Mortgage Loans on the
Distribution Date immediately preceding such anniversary and (y) twice the
outstanding principal balance of the Pool 3 Mortgage Loan which has the largest
outstanding principal balance on the Distribution Date immediately preceding
such anniversary.
 
             POOL 3 YIELD AND WEIGHTED AVERAGE LIFE CONSIDERATIONS
 
YIELD
 
     The effective yields on the Pool 3 Certificates will depend upon, among
other things, the price at which such Certificates are purchased and the rate
and timing of payments of principal (including both scheduled and unscheduled
payments) of the Pool 3 Mortgage Loans.
 
     The yields to investors will be sensitive in varying degrees to the rate of
prepayments on the Pool 3 Mortgage Loans. The extent to which the yield to
maturity of a Certificate is sensitive to prepayments will depend upon the
degree to which it is purchased at a discount or premium. In the case of
Certificates purchased at a premium, faster than anticipated rates of principal
payments on the Mortgage Loans in Pool 3 could result in actual yields to
investors in such Certificates that are lower than the anticipated yields. In
the case of Certificates purchased at a discount, slower than anticipated rates
of principal payments on the Mortgage Loans in Pool 3 could result in actual
yields to investors in such Certificates that are lower than the anticipated
yields.
 
     Rapid rates of prepayments on the Pool 3 Mortgage Loans are likely to
coincide with periods of low prevailing interest rates. During such periods, the
yields at which an investor in the Pool 3 Certificates may be able to reinvest
amounts received as payments on the investor's Certificates may be lower than
the yield on such Certificates. Conversely, slow rates of prepayments on the
Pool 3 Mortgage Loans are likely to coincide with periods of high prevailing
interest rates. During such periods, the amount of payments available to an
investor for reinvestment at such high rates may be relatively low.
 
     The Pool 3 Mortgage Loans will not prepay at any constant rate, nor will
all of the Pool 3 Mortgage Loans prepay at the same rate at any one time. The
timing of changes in the rate of prepayments may affect the actual yield to an
investor, even if the average rate of principal prepayments is consistent with
the investor's expectation. In general, the earlier a prepayment of principal on
a Pool 3 Mortgage Loan, the greater the effect on the yield to an investor in
the Pool 3 Certificates. As a result, the effect on the yield of principal
prepayments on the Pool 3 Mortgage Loans occurring at a rate higher (or lower)
than the rate anticipated by the investor during the period immediately
following the issuance of the Pool 3 Certificates is not likely to be offset by
a later equivalent reduction (or increase) in the rate of principal prepayments.
 
                                     A3-12

<PAGE>

     The Pool 3 Mortgage Loans will bear interest at fixed Mortgage Rates,
payable in arrears. Each monthly interest payment on a Mortgage Loan is
calculated as 1/12th of the applicable Mortgage Rate multiplied by the
outstanding principal balance of such Mortgage Loan on the first day of the
month.
 
     The effective yield to holders of Pool 3 Certificates offered hereby will
be lower than the yield otherwise produced by the applicable Certificate
Interest Rate and the applicable purchase prices thereof because, while interest
will accrue from the first day of each month, the distribution of such interest
will not be made until the 25th day (or if such day is not a business day, the
immediately following business day) of the month following the month of accrual.
In addition, the effective yield on the Pool 3 Certificates will be affected by
any Net Interest Shortfall and the interest portion of certain losses in respect
of Pool 3. See 'Pool 3 Annex--Distributions on the Pool 3 Certificates' and
'--Allocation of Realized Losses on the Pool 3 Certificates' herein.
 
PREPAYMENTS
 
     The rate of distribution of principal of the Pool 3 Certificates will be
affected primarily by the amount and timing of principal payments received on or
in respect of the Pool 3 Mortgage Loans. Such principal payments will include
scheduled payments as well as voluntary prepayments by borrowers (such as, for
example, prepayments in full due to refinancings, including refinancings made by
the Company in the ordinary course of conducting its mortgage banking business,
some of which refinancings may be solicited by the Company, or prepayments in
connection with biweekly payment programs, participation in which may be
solicited by the Company) and prepayments resulting from foreclosure,
condemnation and other dispositions of the Pool 3 Mortgaged Properties, from
repurchase by the Company of any Mortgage Loan as to which there has been a
material breach of warranty or defect in documentation (or deposit of certain
amounts in respect of delivery of a substitute Mortgage Loan therefor), and from
an exercise by the Company of its option to repurchase a Defaulted Mortgage
Loan. See the last two paragraphs of 'The Pool 3 Mortgage Loans,' above and
'Yield Maturity and Weighted Average Life Considerations' in the Prospectus.
Mortgagors are permitted to prepay the Pool 3 Mortgage Loans, in whole or in
part, at any time without penalty. In addition, as a result of the fact that
Pool 3 Certificateholders will be entitled on any Distribution Date to receive
from the Pool 3 Available Funds distributions of amounts pursuant to clause (iv)
of each of the definitions of the Pool 3 Senior Optimal Principal Amount, Class
3-PO Principal Distribution Amount or Pool 3 Junior Optimal Principal Amount,
the occurrence of defaults on the Pool 3 Mortgage Loans may produce the same
effect on the Pool 3 Certificates receiving such distributions as an early
receipt of principal.
 
     A number of social, economic, tax, geographic, demographic, legal and other
factors may influence prepayments of the Mortgage Loans. These factors may
include the age of such Mortgage Loans, the geographic distribution of the
Mortgaged Properties, the payment terms of such Mortgage Loans, the
characteristics of the borrowers, homeowner mobility, economic conditions
generally and in the geographic area in which the Mortgaged Properties are
located, enforceability of due-on-sale clauses, prevailing interest rates in
relation to the interest rates on such Mortgage Loans, the availability of
mortgage funds, the use of second or 'home equity' mortgage loans by mortgagors,
the use of the properties as second or vacation homes, the extent of the
mortgagors' net equity in the Mortgaged Properties, tax-related considerations
and, where investment properties are securing such Mortgage Loans, the
availability of other investments. The rate of principal payment may also be
subject to seasonal variations.
 
     The rate of principal prepayments on pools of conventional mortgage loans
has fluctuated significantly in recent years. Generally, if prevailing interest
rates were to fall significantly below the interest rates on the Pool 3 Mortgage
Loans, such Mortgage Loans would be expected to prepay at higher rates than if
prevailing rates were to remain at or above the interest rates on such Mortgage
Loans. Conversely, if interest rates were to rise significantly above the
interest rates on the Pool 3 Mortgage Loans, such Mortgage Loans would be
expected to prepay at lower rates than if prevailing rates were to remain at or
below the interest rates on such Mortgage Loans.
 
     Voluntary prepayments in full of principal on the Pool 3 Mortgage Loans
received by the Company (or, in the case of Mortgage Loans master-serviced by
the Company, of which the Company receives notice) from the first day through
the fifteenth day of each month (other than the month of the Cut-off Date) are
passed through to the Pool 3 Certificateholders in the month of receipt or
payment. Voluntary prepayments of principal in full received from the sixteenth
day (or, in the case of the month of the Cut-off Date, from the Cut-off Date)
through the last day of each month, and all voluntary partial prepayments of
principal on the Pool 3 Mortgage Loans are
 
                                     A3-13

<PAGE>

passed through to the Pool 3 Certificateholders in the month following the month
of receipt or payment. Any prepayment or liquidation of a Pool 3 Mortgage Loan
(by foreclosure proceedings or by virtue of the purchase of a Pool 3 Mortgage
Loan in advance of its stated maturity as required or permitted by the
Agreement) will generally have the effect of passing through to the Pool 3
Certificateholders principal amounts which would otherwise be passed through in
amortized increments over the remaining term of such Mortgage Loan.
 
     The entire amount of the applicable Non-PO Percentage of any principal
prepayment and certain other unscheduled recoveries of principal with respect to
a Pool 3 Mortgage Loan will be allocated solely to the outstanding Pool 3 Senior
Certificates (other than the Class 3-PO Certificates and the Pool 3 Group II
Senior Certificates, as described herein) during the first five years after the
Cut-off Date (with such allocation being subject to reduction thereafter as
described herein), except as otherwise described herein on or following the Pool
3 Senior Final Distribution Date. Among such Pool 3 Senior Certificates, such
amounts will be allocated in the manner described herein. See 'Pool 3
Annex--Distributions on the Pool 3 Certificates--Principal' herein.
 
     When a full prepayment is made on a Mortgage Loan in a Mortgage Pool, the
Mortgagor is charged interest ('Prepayment Interest') on the days in the month
actually elapsed up to the date of such prepayment, at a daily interest rate
(determined by dividing the Mortgage Rate by 360) which is applied to the
principal amount of the loan so prepaid. When such a prepayment is made during
the period from the sixteenth day through the last day of any month (and from
the Cut-off Date through the fifteenth day of the month of the Cut-off Date),
such Prepayment Interest (net of Servicing Fees) is passed through to the Pool 3
Certificateholders in the month following its receipt and the amount of interest
thus distributed to Certificateholders, to the extent not offset by a related
Compensating Interest Payment (as defined herein), will be less than the amount
which would have been distributed in the absence of such prepayment. The payment
of a claim under certain insurance policies or the purchase of a defaulted Pool
3 Mortgage Loan by a private mortgage insurer may also cause a reduction in the
amount of interest passed through. Shortfalls in respect of Pool 3 described in
this paragraph will be borne by the Pool 3 Certificateholders to the extent
described herein. See 'Pool 1 Annex--Distributions on the Pool 1
Certificates--Interest', 'Pool 2 Annex--Distributions on the Pool 2
Certificates' and 'Pool 3 Annex-- Distributions on the Pool 3
Certificates--Interest' herein.
 
     Any partial prepayment will be applied to the balance of the related Pool 3
Mortgage Loans as of the first day of the month of receipt, will be passed
through to the Pool 3 Certificateholders in the following month and, to the
extent not offset by a related Compensating Interest Payment, will reduce the
aggregate amount of interest distributable to such Certificateholders in such
month in an amount equal to 30 days of interest at the related Net Mortgage Rate
on the amount of such prepayment.
 
     The yield on certain Classes of the Pool 3 Certificates also may be
affected by any repurchase by the Company of the Pool 3 Mortgage Loans as
described under 'The Pooling and Servicing Agreement-- Termination' herein.
 
THE CLASS 3-M, CLASS 3-B1 AND CLASS 3-B2 CERTIFICATES
 
     The rate of payment of principal, the aggregate amount of distributions and
the yield to maturity of the Class 3-M, Class 3-B1 and Class 3-B2 Certificates
will be affected by the rate of prepayments on the Pool 3 Mortgage Loans, as
well as the rate of mortgagor defaults resulting in Realized Losses in respect
of such Mortgage Loans, by the severity of those losses and by the timing
thereof. See 'Pool 3 Annex--Allocation of Realized Losses on the Pool 3
Certificates' herein for a description of the manner in which such losses are
borne by the holders of the Pool 3 Certificates. If the purchaser of a Class
3-M, Class 3-B1 or Class 3-B2 Certificate calculates its anticipated yield based
on an assumed rate of default and amount of Realized Losses in respect of the
related Mortgage Loans that is lower than the default rate and the amount of
losses actually incurred, its actual yield to maturity may be lower than that so
calculated and could be negative. The timing of defaults and losses will also
affect an investor's actual yield to maturity, even if the average rate of
defaults and severity of losses are consistent with an investor's expectations.
In general, the earlier a loss occurs, the greater the effect on an investor's
yield to maturity.
 
     The yields to maturity on the Classes of Class 3-B Certificates with higher
numerical designations will be more sensitive to losses due to liquidations of
defaulted Pool 3 Mortgage Loans than will the yields on such Classes with lower
numerical designations, and the yields to maturity on all of the Class 3-B
Certificates will be more sensitive to such losses than will the yields on the
other Classes of related Certificates. The yields to maturity on the Class 3-M
Certificates will be more sensitive to such losses than will the yields on the
Pool 3
 
                                     A3-14

<PAGE>

Senior Certificates and less sensitive than the yields on the Class 3-B
Certificates. The Pool 3 Junior Certificates will be more sensitive to losses
due to liquidations of defaulted Pool 3 Mortgage Loans because the entire amount
of such losses will be allocable to such Certificates in inverse order of
priority, either directly or through the allocation of the Class 3-PO Deferred
Payment Writedown Amount, except as provided herein. To the extent not covered
by the Company's advances of delinquent monthly payments of principal and
interest, delinquencies on the Pool 3 Mortgage Loans may also have a relatively
greater effect (i) on the yields to investors in the related Class 3-B
Certificates with higher numerical designations than on the yields to investors
in those related Class 3-B Certificates with lower numerical designations, (ii)
on the yields to investors in the related Class 3-B Certificates than on the
yields to investors in the other Classes of related Certificates, and (iii) on
the yields to investors in the Class 3-M Certificates than on the yields to
investors in the related Senior Certificates. As described above under 'Pool 3
Annex--Distributions on the Pool 3 Certificates--Interest' and '--Principal,'
'--Allocation of Realized Losses on the Pool 3 Certificates' and
'--Subordination,' amounts otherwise distributable to holders of any Class of
Pool 3 Class B Certificates will be made available to protect the holders of the
more senior ranking Classes of Pool 3 Certificates against interruptions in
distributions due to certain mortgagor delinquencies. Amounts otherwise
distributable to holders of the Class 3-M Certificates will be made available to
protect the holders of the Pool 3 Senior Certificates against interruptions in
distributions due to certain mortgagor delinquencies. Such delinquencies, even
if subsequently cured, may affect the timing of the receipt of distributions by
the holders of such Junior Certificates.
 
     To the extent that the Class 3-M, Class 3-B1 or Class 3-B2 Certificates are
being purchased at discounts from their initial Class Certificate Principal
Balances, if the purchaser of such a Certificate calculates its yield to
maturity based on an assumed rate of payment of principal faster than that
actually received on such Certificate, its actual yield to maturity may be lower
than that so calculated.
 
FINAL PAYMENT CONSIDERATIONS
 
     The rate of payment of principal of the Pool 3 Certificates will depend on
the rate of payment of principal of the related Mortgage Loans (including
prepayments, defaults, delinquencies and liquidations) which, in turn, will
depend on the characteristics of such Mortgage Loans, the level of prevailing
interest rates and other economic, geographic, social and other factors, and no
assurance can be given as to the actual payment experience. As of the Cut-off
Date, the month and year of the latest scheduled maturity of a Mortgage Loan in
Pool 3 is expected to be July 2013. In addition, to the extent delinquencies and
defaults are not covered by advances made by the Company or offset by the effect
of the subordination of the related Junior Certificates, delinquencies and
defaults could affect the actual maturity of the Certificates offered hereby.
 
WEIGHTED AVERAGE LIVES OF THE POOL 3 CERTIFICATES
 
     The weighted average life of a Certificate is determined by (a) multiplying
the reduction, if any, in the Certificate Principal Balance thereof on each
Distribution Date by the number of years from the date of issuance to such
Distribution Date, (b) summing the results and (c) dividing the sum by the
aggregate reductions in the Certificate Principal Balance of such Certificate.
 
     The weighted average lives of the Pool 3 Certificates will be affected, to
varying degrees, by the rate of principal payments on the Pool 3 Mortgage Loans,
the timing of changes in such rate of payments and the priority sequence of
distributions of principal of such Certificates. The interaction of the
foregoing factors may have different effects on the various Classes of the
Certificates and the effects on any Class may vary at different times during the
life of such Class. Further, to the extent the prices of Classes of Certificates
represent discounts or premiums to their respective original Class Certificate
Principal Balances, variability in the weighted average lives of such Classes of
Certificates could result in variability in the related yields to maturity.
 
     Prepayments on mortgage loans are commonly measured relative to a
prepayment standard or model. The model used in this Prospectus Supplement (the
'Prepayment Assumption') represents an assumed rate of prepayment each month
relative to the then outstanding principal balance of a pool of mortgage loans.
The Prepayment Assumption does not purport to be either a historical description
of the prepayment experience of any pool of mortgage loans or a prediction of
the anticipated rate of prepayment of any pool of mortgage loans, including the
Mortgage Loans in either Mortgage Pool. A prepayment assumption of 100% of the
Prepayment Assumption assumes prepayment rates of 0.2% per annum of the then
outstanding principal balance of such mortgage loans in the first month of the
life of the mortgage loans and increasing by 0.2% per annum in each
 
                                     A3-15

<PAGE>

month thereafter until the thirtieth month. Beginning in the thirtieth month and
in each month thereafter during the life of the mortgage loans, 100% of the
Prepayment Assumption assumes a constant prepayment rate of 6.0% per annum.
 
     Tables of Pool 3 Class Certificate Principal Balances. The following tables
set forth the percentages of the initial Class Certificate Principal Balance of
each Class of Pool 3 Certificates offered hereby that would be outstanding after
each of the dates shown at the specified constant percentages of the Prepayment
Assumption and the corresponding weighted average life of each such Class of
Pool 3 Certificates. For purposes of calculations under the columns at the
indicated percentages of the Prepayment Assumption set forth in the tables, it
is assumed with respect to the Pool 3 Mortgage Loans (the 'Pool 3 Modeling
Assumptions') that (i) the distributions in respect of the Pool 3 Certificates
are made and received in cash on the 25th day of each month commencing in August
1998, (ii) the Pool 3 Mortgage Loans prepay at the specified constant
percentages of the Prepayment Assumption, (iii) the aggregate outstanding
principal balance of the Pool 3 Mortgage Loans as of the Cut-off Date is
$176,002,356, (iv) no defaults or delinquencies in the payment by Mortgagors of
principal of and interest on the Pool 3 Mortgage Loans are experienced and the
Company does not repurchase any of the Pool 3 Mortgage Loans as permitted or
required by the Agreement, (v) the Company does not exercise its option to
repurchase all the Mortgage Loans in the Trust Fund as described under the
caption 'The Pooling and Servicing Agreement--Termination' herein, (vi)
scheduled monthly payments on the Pool 3 Mortgage Loans are received on the
first day of each month commencing in August 1998, and are computed prior to
giving effect to prepayments received in the prior month, (vii) prepayments
representing payment in full of individual Pool 3 Mortgage Loans are received on
the last day of each month (commencing in July 1998) and include 30 days'
interest thereon, and no Interest Shortfalls occur in respect of the Pool 3
Mortgage Loans, (viii) the scheduled monthly payment for each Pool 3 Mortgage
Loan has been calculated based on its outstanding balance, interest rate and
remaining term to maturity such that such Mortgage Loan will amortize in amounts
sufficient to repay the remaining balance of such Mortgage Loan by its remaining
term to maturity, (ix) the initial Class Certificate Principal Balance and
Certificate Interest Rate for each Class of Pool 3 Certificates offered hereby
are as indicated on the cover page hereof, (x) the date of the initial issuance
of the Pool 3 Certificates is July 30, 1998, (xi) the amounts distributable to
Pool 3 Certificateholders are not reduced by the incurrence of any expenses by
the Pool 3 Trust Fund and (xii) the Pool 3 Mortgage Loans are divided into two
groups (each, a 'Pool 3 Mortgage Loan Group') and the Pool 3 Mortgage Loans in
each Pool 3 Mortgage Loan Group have the respective characteristics described
below (the Aggregate Scheduled Principal Balance shown below for each Pool 3
Mortgage Loan Group has been rounded to the nearest dollar and Mortgage Rates
have been rounded to eight decimal places):
 
<TABLE>
<CAPTION>
                                           AGGREGATE                                                       STATED
                                           SCHEDULED                                                      REMAINING
                                       PRINCIPAL BALANCE                          NET                      TERM TO
                                           AS OF THE          MORTGAGE         MORTGAGE         AGE       MATURITY
MORTGAGE LOAN GROUP                      CUT-OFF DATE           RATE             RATE         (MONTHS)    (MONTHS)
- ------------------------------------   -----------------    -------------    -------------    --------    ---------
<S>                                    <C>                  <C>              <C>              <C>         <C>
Discount............................     $  22,321,959       6.5537112966%    6.3066215833%       2          177
Non-Discount........................       153,680,397       7.1132163831     6.8554478758        2          177
</TABLE>
 
     It is not likely that the Pool 3 Mortgage Loans will prepay at a constant
level of the Prepayment Assumption. In addition, because certain of the Pool 3
Mortgage Loans will have remaining terms to maturity and will bear interest at
rates that are different from those assumed, the actual Class Certificate
Principal Balance of each Class of Pool 3 Certificates outstanding at any time
and the actual weighted average life of each Class of Pool 3 Certificates would
differ (which difference could be material) from the corresponding information
in the tables for each indicated percentage of the Prepayment Assumption.
Furthermore, even if all the Pool 3 Mortgage Loans prepay at the indicated
percentage of the Prepayment Assumption and the weighted average mortgage
interest rate and weighted average stated remaining term to maturity of the Pool
3 Mortgage Loans were to equal the weighted average mortgage interest rate and
weighted average stated remaining term to maturity of the assumed Pool 3
Mortgage Loans, due to the actual distribution of remaining terms to maturity
and interest rates among the Pool 3 Mortgage Loans, the actual Class Certificate
Principal Balance of each Class of Certificates outstanding at any time and the
actual weighted average life of each Class of Certificates would differ (which
difference could be material) from the corresponding information in the tables
for each indicated percentage of the Prepayment Assumption.
 
                                     A3-16

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 3 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                                     CLASS 3-A3
                                                      CLASS 3-A1                         CLASS 3-A2              ------------------
                                           --------------------------------   --------------------------------
                                                                                                                     PREPAYMENT
                                                PREPAYMENT ASSUMPTION              PREPAYMENT ASSUMPTION             ASSUMPTION
                                           --------------------------------   --------------------------------   ------------------
DISTRIBUTION DATE                           0%    200%   275%   350%   500%    0%    200%   275%   350%   500%    0%    200%   275%
- -----------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                        <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage.......................   100   100    100    100    100     100   100    100    100    100     100   100    100
July 1999................................    96    91     90     88     85     100   100    100    100    100      96    96     96
July 2000................................    91    77     72     67     57     100   100    100    100    100      92    92     92
July 2001................................    86    61     52     44     29     100   100    100    100    100      87    87     87
July 2002................................    81    46     36     26     10     100   100    100    100    100      82    82     82
July 2003................................    75    34     23     13      0     100   100    100    100     59      77    77     77
July 2004................................    69    25     14      5      0     100   100    100    100      0      71    68     67
July 2005................................    63    18      7      0      0     100   100    100     96      0      65    59     57
July 2006................................    56    12      3      0      0     100   100    100     50      0      59    49     46
July 2007................................    49     8      *      0      0     100   100    100     29      0      52    39     35
July 2008................................    41     4      0      0      0     100   100     76     19      0      44    29     25
July 2009................................    32     1      0      0      0     100   100     52     12      0      36    21     17
July 2010................................    23     0      0      0      0     100    82     33      7      0      27    14     11
July 2011................................    13     0      0      0      0     100    47     18      4      0      18     8      6
July 2012................................     2     0      0      0      0     100    18      7      1      0       8     3      2
July 2013................................     0     0      0      0      0       0     0      0      0      0       0     0      0
Weighted Average Life
  (in years)(1)..........................   8.3   4.3    3.5    3.0    2.3    14.5   13.0   11.4   8.7    5.1     8.7   7.8    7.5
 
<CAPTION>
 
DISTRIBUTION DATE                          350%   500%
- -----------------------------------------  ----   ----
<S>                                        <C>    <C>
Initial Percentage.......................  100    100
July 1999................................   96     96
July 2000................................   92     92
July 2001................................   87     87
July 2002................................   82     82
July 2003................................   77     77
July 2004................................   66     57
July 2005................................   55     36
July 2006................................   43     22
July 2007................................   31     13
July 2008................................   21      8
July 2009................................   13      5
July 2010................................    8      2
July 2011................................    4      1
July 2012................................    1      *
July 2013................................    0      0
Weighted Average Life
  (in years)(1)..........................  7.3    6.3
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A3-17

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 3 CERTIFICATES
 
<TABLE>
<CAPTION>
                                                                                                               CLASS 3-A4
                                                                                                    --------------------------------
                                                                                                         PREPAYMENT ASSUMPTION
                                                                                                    --------------------------------
DISTRIBUTION DATE                                                                                    0%    200%   275%   350%   500%
- --------------------------------------------------------------------------------------------------  ----   ----   ----   ----   ----
<S>                                                                                                 <C>    <C>    <C>    <C>    <C>
Initial Percentage................................................................................   100   100    100    100    100
July 1999.........................................................................................    96    93     91     90     88
July 2000.........................................................................................    92    81     77     73     66
July 2001.........................................................................................    87    68     61     55     44
July 2002.........................................................................................    82    56     48     41     28
July 2003.........................................................................................    77    46     37     30     18
July 2004.........................................................................................    71    37     29     22     11
July 2005.........................................................................................    65    30     22     15      7
July 2006.........................................................................................    59    24     16     11      4
July 2007.........................................................................................    52    18     12      8      3
July 2008.........................................................................................    44    14      8      5      2
July 2009.........................................................................................    36    10      6      3      1
July 2010.........................................................................................    27     7      4      2      *
July 2011.........................................................................................    18     4      2      1      *
July 2012.........................................................................................     8     1      1      *      *
July 2013.........................................................................................     0     0      0      0      0
Weighted Average Life
  (in years)(1)...................................................................................   8.7   5.4    4.7    4.1    3.2
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A3-18

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 3 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                          CLASS 3-M, CLASS 3-B1 AND
                                                                                  CLASS 3-R                      CLASS 3-B2
                                                                       --------------------------------   -------------------------
                                                                            PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION
                                                                       --------------------------------   -------------------------
DISTRIBUTION DATE                                                       0%    200%   275%   350%   500%    0%    200%   275%   350%
- ---------------------------------------------------------------------  ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                                                    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage...................................................   100   100    100    100    100     100   100    100    100
July 1999............................................................     0     0      0      0      0      96    96     96     96
July 2000............................................................     0     0      0      0      0      92    92     92     92
July 2001............................................................     0     0      0      0      0      87    87     87     87
July 2002............................................................     0     0      0      0      0      82    82     82     82
July 2003............................................................     0     0      0      0      0      77    77     77     77
July 2004............................................................     0     0      0      0      0      71    68     67     66
July 2005............................................................     0     0      0      0      0      65    60     57     55
July 2006............................................................     0     0      0      0      0      59    50     46     43
July 2007............................................................     0     0      0      0      0      52    39     35     31
July 2008............................................................     0     0      0      0      0      44    30     25     21
July 2009............................................................     0     0      0      0      0      36    21     17     14
July 2010............................................................     0     0      0      0      0      27    14     11      8
July 2011............................................................     0     0      0      0      0      18     8      6      4
July 2012............................................................     0     0      0      0      0       8     3      2      1
July 2013............................................................     0     0      0      0      0       0     0      0      0
Weighted Average Life
  (in years)(1)......................................................   0.1   0.1    0.1    0.1    0.1     8.7   7.8    7.5    7.3
 
<CAPTION>
 
DISTRIBUTION DATE                                                      500%
- ---------------------------------------------------------------------  ----
<S>                                                                    <C>
Initial Percentage...................................................  100
July 1999............................................................   96
July 2000............................................................   92
July 2001............................................................   87
July 2002............................................................   82
July 2003............................................................   77
July 2004............................................................   64
July 2005............................................................   51
July 2006............................................................   37
July 2007............................................................   24
July 2008............................................................   15
July 2009............................................................    8
July 2010............................................................    4
July 2011............................................................    2
July 2012............................................................    1
July 2013............................................................    0
Weighted Average Life
  (in years)(1)......................................................  6.9
</TABLE>
 
- ------------------
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A3-19

<PAGE>

                                  POOL 4 ANNEX

             THE POOL 4 MORTGAGE LOANS AND THE POOL 4 CERTIFICATES
 
     Interest and principal will be distributable on the Pool 4 Certificates
solely out of the Pool 4 Available Funds received in respect of the Pool 4
Mortgage Loans. This Pool 4 Annex sets forth certain data with respect to the
Pool 4 Mortgage Loans, describes the manner in which interest and principal will
be distributable on the Pool 4 Certificates and discusses certain yield and
weighted average life considerations relevant to an investment in the Pool 4
Certificates.
 
THE POOL 4 MORTGAGE LOANS
 
     The Pool 4 Mortgage Loans will have an aggregate Scheduled Principal
Balance as of the Cut-off Date, after deducting payments of principal due on or
before such date, of approximately $201,364,346. This amount is subject to a
permitted variance such that the aggregate Scheduled Principal Balance thereof
will not be less than $190,000,000 or greater than $210,000,000.
 
     It is expected that at least 95% (by Scheduled Principal Balance as of the
Cut-off Date) of the Pool 4 Mortgage Loans (and substantially all of the Pool 4
Mortgage Loans with loan-to-value ratios in excess of 80%) will have been
originated under the Company's full or alternative documentation program or
other full or alternative documentation programs acceptable to the Company, that
no more than 3.50% (by Scheduled Principal Balance as of the Cut-off Date) of
the Pool 4 Mortgage Loans will have been originated under the Company's 'No
Income Verification Program' or other no income verification programs acceptable
to the Company, that no more than 0.5% of the Pool 4 Mortgage Loans will have
been originated under the Company's 'Enhanced Streamlined Refinance Program' or
other streamlined refinance programs acceptable to the Company, that no more
than 0.50% of the Pool 4 Mortgage Loans will have been originated under the
Company's 'No Ratio Program' or other no ratio programs acceptable to the
Company, and that no more than 0.50% of the Pool 4 Mortgage Loans will have been
originated under the Company's 'No Income No Asset Verification Program' or
other no income, no asset verification programs acceptable to the Company. It is
expected that no more than 0.52% (by Scheduled Principal Balance as of the
Cut-off Date) of the Pool 4 Mortgage Loans will have been acquired under the
Company's 'Relocation Loan' program or other relocation programs acceptable to
the Company. See 'The Trust Fund--The Mortgage Loans--Loan Underwriting
Policies' in the Prospectus.
 
     The Mortgage Rates borne by the Pool 4 Mortgage Loans are expected to range
from 6.50% to 8.75% per annum, and the weighted average Mortgage Rate as of the
Cut-off Date of such Mortgage Loans is expected to be between 7.35% and 7.39%
per annum. The original principal balances of the Pool 4 Mortgage Loans are
expected to range from $54,000 to $1,260,000 and, as of the Cut-off Date, the
average Scheduled Principal Balance of such Mortgage Loans is not expected to
exceed $315,000 after application of payments due on or before the Cut-off Date.
It is expected that the month and year of the earliest origination date of any
Pool 4 Mortgage Loan will be September 1997 and the month and year of the latest
scheduled maturity date of any such Mortgage Loan will be July 2028. All of the
Pool 4 Mortgage Loans will have original terms to maturity of 20 to 30 years,
and it is expected that the weighted average scheduled remaining term to
maturity of such Mortgage Loans will be between 358 and 360 months as of the
Cut-off Date.
 
     The Pool 4 Mortgage Loans are expected to have the following additional
characteristics (by Scheduled Principal Balance of all the Pool 4 Mortgage
Loans) as of the Cut-off Date:
 
          It is expected that no more than 50% of the Mortgaged Properties
     relating to the Pool 4 Mortgage Loans will be located in California. The
     majority of the Pool 4 Mortgage Loans will be secured by Mortgaged
     Properties located in California, Massachusetts and Virginia. No more than
     5% of such Mortgage Loans will be secured by Mortgaged Properties located
     in any one state except the states specified in the preceding sentence.
 
          No more than 10% of the Pool 4 Mortgage Loans will have a Scheduled
     Principal Balance of more than $500,000 and up to and including $750,000.
     No more than 1% of the Pool 4 Mortgage Loans will have a Scheduled
     Principal Balance of more than $750,000 and up to and including $1,000,000.
     No more than 1.1% of the Pool 4 Mortgage Loans will have a Scheduled
     Principal Balance of more than $1,000,000.
 
          No more than 15% of such Mortgage Loans will have a loan-to-value
     ratio at origination in excess of 80%, no more than 6% of such Mortgage
     Loans will have a loan-to-value ratio at origination in excess of
 
                                      A4-1

<PAGE>

     90%, and none of such Mortgage Loans will have a loan-to-value ratio at
     origination in excess of 95%. As of the Cut-off Date, the weighted average
     loan-to-value ratio at origination of such Mortgage Loans is expected to be
     between 75% and 77%.
 
          No more than 0.5% of such Mortgage Loans will have a loan-to-value
     ratio at origination calculated based on an appraisal conducted more than
     one year before the origination date thereof.
 
          The proceeds of at least 46% of such Mortgage Loans will have been
     used to acquire the related Mortgaged Property. The proceeds of the
     remainder of such Mortgage Loans will have been used to refinance an
     existing loan. No more than 14% of such Mortgage Loans will have been the
     subject of 'cash-out' refinancings.
 
          No more than 1% of such Mortgage Loans will be temporary buy-down
     Mortgage Loans.
 
          No more than 2% of such Mortgage Loans will be secured by Mortgaged
     Properties located in any one postal zip code area.
 
          At least 97% of such Mortgage Loans will be secured by Mortgaged
     Properties determined by the Company to be the primary residence of the
     Mortgagor. The basis for such determination will be the making of a
     representation by the Mortgagor at origination that the underlying property
     will be used as the Mortgagor's primary residence.
 
          At least 91% of such Mortgage Loans will be secured by single-family,
     detached residences. No more than 4% of such Mortgage Loans will be secured
     by condominiums.
 
          None of such Mortgage Loans are Cooperative Loans (see 'The Trust
     Fund--The Mortgage Loans' in the Prospectus) secured by shares of stock in
     cooperative housing corporations and assignments of the proprietary leases
     to cooperative apartment units therein.
 
          Federal emergency aid has been made available to property owners in
     several areas of California and several other states as a result of recent
     flooding, ice storms and in California, landslides. Approximately 59% (by
     Scheduled Principal Balance as of the Cut-off Date) of the Pool 4 Mortgage
     Loans (80% of which are located in California) are secured by related
     Mortgaged Properties located in the 57 counties (24 of which are in
     California) known to be affected by such conditions, and it is unknown
     whether additional areas may be affected by such conditions. In addition,
     due to recent wildfires occurring in widespread areas of Florida, the
     Federal Emergency Management Agency has announced that federal emergency
     aid will be available to homeowners throughout Florida affected by such
     fires. Approximately 1.0% (by Scheduled Principal Balance as of the Cut-off
     Date) of the Pool 4 Mortgage Loans are secured by Mortgaged Properties
     located in Florida. The Company has not undertaken the physical inspection
     of any such Mortgaged Property and, as a result, there can be no assurance
     that material damage to any Mortgaged Property in such affected areas has
     not occurred.
 
          Under the Agreement, the Company will represent and warrant that each
     Pool 4 Mortgaged Property is free of material damage and in good repair as
     of the date of issuance of the Certificates. In the event of an uncured
     breach of such representation and warranty that materially and adversely
     affects the interests of Certificateholders, the Company will be required
     to repurchase the affected Pool 4 Mortgage Loan or substitute another
     mortgage loan therefor. If any damage caused by the flooding, ice storms or
     landslides occurs after the Closing Date, the Company will have no such
     obligation. In addition, the standard hazard policies covering the
     Mortgaged Properties generally do not cover damage caused by flooding and
     landslides, and flood or landslide insurance may not have been obtained
     with respect to such Mortgaged Properties. To the extent that any insurance
     proceeds received with respect to any damaged Pool 4 Mortgaged Properties
     are not applied to the restoration thereof, such proceeds will be used to
     prepay the related Pool 4 Mortgage Loans in whole or in part. Any
     repurchases or prepayments of the Pool 4 Mortgage Loans may reduce the
     weighted average lives of the Certificates offered hereby and will reduce
     the yields on any Classes of Pool 4 Certificates purchased at a premium.
 
DISTRIBUTIONS ON THE POOL 4 CERTIFICATES
 
     Allocation of Pool 4 Available Funds.  Interest and principal on the Pool 4
Certificates will be distributed monthly on each Distribution Date commencing in
August 1998 in an aggregate amount equal to the Pool 4 Available Funds for such
Distribution Date.
 
                                      A4-2
<PAGE>

     On each Distribution Date, the Pool 4 Available Funds will be distributed
in the following order of priority among the Certificates:
 
          first, to the Classes of Pool 4 Senior Certificates (other than the
     Class 4-PO Certificates), the Accrued Certificate Interest on each such
     Class for such Distribution Date, any shortfall in available amounts being
     allocated among such Classes in proportion to the amount of Accrued
     Certificate Interest otherwise distributable thereon;
 
          second, to the Classes of Pool 4 Senior Certificates (other than the
     Class 4-PO Certificates), any Accrued Certificate Interest thereon
     remaining undistributed from previous Distribution Dates, to the extent of
     remaining Pool 4 Available Funds, any shortfall in available amounts being
     allocated among such Classes in proportion to the amount of such Accrued
     Certificate Interest remaining undistributed for each such Class for such
     Distribution Date;
 
          third, to the Classes of Pool 4 Senior Certificates, in reduction of
     the Class Certificate Principal Balances thereof, to the extent of
     remaining Pool 4 Available Funds, concurrently, as follows:
 
             (a) to the Class 4-A4 Certificates (the 'Pool 4 Group II Senior
        Certificates'), the Class 4-A4 Principal Distribution Amount (as defined
        herein) for such Distribution Date, until the Class Certificate
        Principal Balance thereof has been reduced to zero;
 
             (b) to the Class 4-A1, Class 4-A2, Class 4-A3, Class 4-A5, Class
        4-A6, Class 4-A7, Class 4-A8, Class 4-A9, Class 4-A10, Class 4-A11,
        Class 4-A12, Class 4-A13, and Class 4-R Certificates (the 'Pool 4 Group
        I Senior Certificates'), the Pool 4 Senior Optimal Principal Amount for
        such Distribution Date, less the Class 4-A4 Principal Distribution
        Amount for such Distribution Date, in the following order of priority:
 
                (1) to the Class 4-A1, Class 4-A2, Class 4-A3, Class 4-A6, Class
           4-A7, Class 4-A8, Class 4-A9, Class 4-A10, Class 4-A11, Class 4-A12,
           Class 4-A13 and Class 4-R Certificates, approximately 71.9394600504%
           of the amount set forth in clause (b) above, in the following order
           of priority:
 
                        (i) to the Class 4-A1, Class 4-A6, Class 4-A7, Class
                   4-A8, Class 4-A9, Class 4-A10, Class 4-A11, Class 4-A12,
                   Class 4-A13 and Class 4-R Certificates, concurrently, until
                   the Class Certificate Principal Balance of the Class 4-A1
                   Certificates has been reduced to zero, as follows:
 
                            (A) to the Class 4-A6, Class 4-A7, Class 4-A8, Class
                       4-A9, Class 4-A10, Class 4-A11, Class 4-A12 and Class
                       4-A13 Certificates, approximately 27.5251515152% of the
                       amount set forth in clause (b)(1) above, in the following
                       order of priority:
 
                                (I) to the Class 4-A6 Certificates, until the
                           Class Certificate Principal Balance thereof has been
                           reduced to zero;
 
                                (II) pro rata, to the Class 4-A7 and Class 4-A8
                           Certificates, until the Class Certificate Principal
                           Balance of each such Class has been reduced to zero;
 
                                (III) to the Class 4-A9 Certificates, until the
                           Class Certificate Principal Balance thereof has been
                           reduced to zero;
 
                                (IV) pro rata, to the Class 4-A10 and Class
                           4-A11 Certificates, until the Class Certificate
                           Principal Balance of each such Class has been reduced
                           to zero; and
 
                                (V) sequentially, to the Class 4-A12 and Class
                           4-A13 Certificates, in that order, until each of the
                           Class Certificate Principal Balances thereof has been
                           reduced to zero;
 
                            (B) to the Class 4-R and Class 4-A1 Certificates,
                       sequentially, approximately 72.4748484848% of the amount
                       set forth in clause (b)(1) above, until the Class
                       Certificate Principal Balance of each such Class has been
                       reduced to zero, such that no distribution pursuant to
                       this clause will be made to the Class 4-A1 Certificates
 
                                      A4-3
<PAGE>

                       until the Class Certificate Principal Balance of the
                       Class 4-R Certificates has been reduced to zero;
 
                        (ii) pro rata, to the Class 4-A7 and Class 4-A8
                   Certificates, until the Class Certificate Principal Balance
                   of each such Class has been reduced to zero;
 
                        (iii) to the Class 4-A9 Certificates, until the Class
                   Certificate Principal Balance thereof has been reduced to
                   zero;
 
                        (iv) pro rata, to the Class 4-A10 and Class 4-A11
                   Certificates, until the Class Certificate Principal Balance
                   of each such Class has been reduced to zero;
 
                        (v) to the Class 4-A12 Certificates, until the Class
                   Certificate Principal Balance thereof has been reduced to
                   zero;
 
                        (vi) to the Class 4-A13 Certificates, until the Class
                   Certificate Principal Balance thereof has been reduced to
                   zero; and
 
                        (vii) pro rata, to the Class 4-A2 and Class 4-A3
                   Certificates, until the Class Certificate Principal Balance
                   of each such Class has been reduced to zero;
 
                    (2) to the Class 4-A2, Class 4-A3 and Class 4-A5
               Certificates, appoximately 28.0605399496% of the amount set forth
               in clause (b) above, in the following order of priority:
 
                        (i) to the Class 4-A5 Certificates, until the Class
                   Certificate Principal Balance thereof has been reduced to
                   zero; and
 
                        (ii) pro rata, to the Class 4-A2 and Class 4-A3
                   Certificates, until the Class Certificate Principal Balance
                   of each such Class has been reduced to zero; and
 
          (c) to the Class 4-PO Certificates, the Class 4-PO Principal
     Distribution Amount for such Distribution Date, until the Class Certificate
     Principal Balance thereof has been reduced to zero;
 
          fourth, to the Class 4-PO Certificates, to the extent of remaining
     Pool 4 Available Funds, the Class 4-PO Deferred Amount for such
     Distribution Date, until the Class Certificate Principal Balance thereof
     has been reduced to zero; provided that, (i) on any Distribution Date,
     distributions pursuant to this priority fourth shall not exceed the Pool 4
     Junior Optimal Principal Amount for such Distribution Date, (ii) such
     distributions shall not reduce the Class Certificate Principal Balance of
     the Class 4-PO Certificates and (iii) no distribution will be made in
     respect of the Class 4-PO Deferred Amount after the Distribution Date on
     which the respective Class Certificate Principal Balances of the Pool 4
     Junior Certificates have been reduced to zero (the 'Pool 4 Cross-Over
     Date');
 
          fifth, to the Class 4-M Certificates, to the extent of remaining Pool
     4 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date;
 
          sixth, to the Class 4-B1 Certificates, to the extent of remaining Pool
     4 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date;
 
          seventh, to the Class 4-B2 Certificates, to the extent of remaining
     Pool 4 Available Funds, in the following order: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Class's Allocable Share for such Distribution Date; and
 
          eighth, to the Class 4-B3, Class 4-B4 and Class 4-B5 Certificates, to
     the extent of remaining Pool 4 Available Funds: (a) the Accrued Certificate
     Interest thereon for such Distribution Date, (b) any Accrued Certificate
     Interest thereon remaining undistributed from previous Distribution Dates
     and (c) such Classes' Allocable Shares for such Distribution Date.
 
     'Pro rata' distributions among Classes of Certificates will be made in
proportion to the then-current Class Certificate Principal Balances of such
Classes.
 
     The percentages set forth in priority third above were calculated on the
basis of the Class Certificate Principal Balances of the related Certificates
set forth on the cover hereof. If such Class Certificate Principal
 
                                      A4-4

<PAGE>

Balances are increased or decreased in accordance with the variance permitted
hereby, the applicable percentages will be increased or decreased substantially
correspondingly.
 
     On each Distribution Date after the Pool 4 Cross-Over Date, distributions
of principal on the outstanding Pool 4 Senior Certificates will be made pro rata
among all such Certificates, regardless of the allocation, or sequential nature,
of the principal payments described in priority third above.
 
     If, after distributions have been made pursuant to priorities first and
second above on any Distribution Date, the remaining Pool 4 Available Funds are
less than the sum of the amounts required to be distributed in accordance with
priority third above, the Pool 4 Senior Optimal Principal Amount and the Class
4-PO Principal Distribution Amount for such Distribution Date shall be
proportionately reduced, and such remaining Pool 4 Available Funds will be
distributed on the Pool 4 Senior Certificates in accordance with the applicable
clauses of priority third above on the basis of such reduced amounts.
Notwithstanding such allocation, Realized Losses in respect of Pool 4 will be
allocated to the Pool 4 Certificates as described under '--Allocation of
Realized Losses on the Pool 4 Certificates' herein.
 
     Interest.  Interest will accrue on the Pool 4 Certificates offered hereby
(other than the Class 4-A2 and Class 4-A3 Certificates) at the respective fixed
Certificate Interest Rates set forth on the cover hereof during each Interest
Accrual Period. Interest will be calculated on the basis of a 360-day year
consisting of twelve 30-day months.
 
     Interest will accrue on the Class 4-B3, Class 4-B4 and Class 4-B5
Certificates at the Certificate Interest Rate of 6.75% per annum during each
Interest Accrual Period.
 
     Interest will accrue on the Class 4-A2 Certificates at the per annum rate
of 6.55625% for the first Interest Accrual Period, and thereafter, with respect
to each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
0.90% plus LIBOR and (ii) 9.00%, subject to a minimum rate of 0.90%.
 
     Interest will accrue on the Class 4-A3 Certificates at the per annum rate
of 7.33125% for the first Interest Accrual Period, and thereafter, with respect
to each Interest Accrual Period, at a per annum rate equal to the lesser of (i)
24.30000% minus the product of 3.000000 and LIBOR and (ii) 24.30000%, subject to
minimum rate of 0.00%.
 
     The Trustee shall determine LIBOR in accordance with the methods set forth
under '--Determination of LIBOR' below.
 
     The Class 4-PO Certificates are principal-only Certificates and will not
accrue interest.
 
     The 'Accrued Certificate Interest' for any Pool 4 Certificate (other than a
Class 4-PO Certificate) for any Distribution Date will equal the interest
accrued during the related Interest Accrual Period at the applicable Certificate
Interest Rate on the Certificate Principal Balance of such Certificate
immediately prior to such Distribution Date, less such Certificate's share of
any allocable Net Interest Shortfall (as defined below), the interest portion of
any Excess Losses (as defined herein) allocable to Certificateholders through
the Pool 4 Cross-Over Date and, after the Pool 4 Cross-Over Date, the interest
portion of Realized Losses allocable to Certificateholders including Excess
Losses, in each case in respect of the Pool 4 Mortgage Loans.
 
     The 'Certificate Principal Balance' of any Pool 4 Certificate as of any
Distribution Date will equal such Certificate's Certificate Principal Balance on
the Closing Date as reduced by (i) all amounts distributed on previous
Distribution Dates on such Certificate on account of principal, (ii) the
principal portion of all Realized Losses previously allocated to such
Certificate and (iii) in the case of a Pool 4 Junior Certificate, such
Certificate's pro rata share, if any, of the Pool 4 Junior Certificate Writedown
Amount (as defined below) and the Class 4-PO Deferred Payment Writedown Amount
(as defined below) for previous Distribution Dates. As of any Distribution Date,
the 'Pool 4 Junior Certificate Writedown Amount' will equal the amount by which
(a) the sum of the Class Certificate Principal Balances of all of the Pool 4
Certificates (after giving effect to the distribution of principal and the
application of Realized Losses in respect of the Pool 4 Mortgage Loans in
reduction of the Certificate Principal Balances of such Certificates on such
Distribution Date) exceeds (b) the aggregate Scheduled Principal Balance of the
Pool 4 Mortgage Loans on the first day of the month of such Distribution Date
less any applicable Deficient Valuations occurring on or prior to the Bankruptcy
Coverage Termination Date in respect of Pool 4. For any Distribution Date, the
'Class 4-PO Deferred Payment Writedown Amount' will equal the amount, if any,
distributed on such date in respect of the Class 4-PO Deferred Amount pursuant
to priority fourth under '--Allocation of Pool 4 Available Funds' above. The
Pool 4 Junior Certificate Writedown Amount and the Class 4-PO Deferred Payment
Writedown Amount will each be allocated to the
 
                                      A4-5

<PAGE>

Classes of Pool 4 Junior Certificates in inverse order of priority, until the
Class Certificate Principal Balance of each such Class has been reduced to zero.
 
     For the definitions of 'Interest Accrual Period,' 'Net Interest Shortfall'
and 'Interest Shortfall,' see 'Pool 1 Annex--Distributions on the Pool 1
Certificates--Interest' herein.
 
     Any Net Interest Shortfall, the interest portion of any Excess Losses
allocable to Pool 4 Certificateholders through the Pool 4 Cross-Over Date and,
after the Pool 4 Cross-Over Date, the interest portion of any Realized Losses
allocable to Certificateholders (see '--Allocation of Realized Losses on the
Pool 4 Certificates' herein), in each case in respect of the Pool 4 Mortgage
Loans, will, on each Distribution Date, be allocated among all the outstanding
Pool 4 Certificates (other than the Class 4-PO Certificates), in proportion to
the amount of Accrued Certificate Interest that would have been allocated
thereto in the absence of such shortfall and losses. See 'The Pooling and
Servicing Agreement--Servicing Compensation, Compensating Interest and Payment
of Expenses' herein.
 
     The interest portion of any Realized Losses (other than Excess Losses) in
respect of the Pool 4 Mortgage Loans occurring prior to the Pool 4 Cross-Over
Date will not be allocated among any Pool 4 Certificates, but will reduce the
amount of Pool 4 Available Funds on the related Distribution Date. As a result
of the subordination of the Pool 4 Junior Certificates in right of distribution
relative to the Pool 4 Senior Certificates, such losses will be borne first by
the Pool 4 Junior Certificates (to the extent then outstanding) in inverse order
of priority.
 
     If the Pool 4 Available Funds are insufficient on any Distribution Date to
distribute the aggregate Accrued Certificate Interest on the Pool 4 Senior
Certificates (other than the Class 4-PO Certificates) to their
Certificateholders, any shortfall in available amounts will be allocated among
such Classes of Pool 4 Senior Certificates in proportion to the amounts of
Accrued Certificate Interest otherwise distributable thereon on such
Distribution Date. The amount of any such undistributed Accrued Certificate
Interest will be added to the amount to be distributed in respect of interest on
the Pool 4 Senior Certificates (other than the Class 4-PO Certificates) on
subsequent Distribution Dates in accordance with priority second under
'--Allocation of Pool 4 Available Funds' above. No interest will accrue on any
Accrued Certificate Interest remaining undistributed from previous Distribution
Dates.
 
     Determination of LIBOR.  The Trustee shall determine the Certificate
Interest Rate for the Class 4-A2 and Class 4-A3 Certificates for any Interest
Accrual Period by reference to LIBOR. 'LIBOR' will be determined on the second
London banking day (as defined below) immediately preceding the commencement of
each Interest Accrual Period for the Class 4-A2 and Class 4-A3 Certificates
(other than the first Interest Accrual Period) (each, a 'LIBOR Determination
Date'), and will be (1) the rate (expressed as a percentage per annum) for
deposits in U.S. dollars for a period of one month that appears on Telerate page
3750 as of 11:00 a.m., London time, on such LIBOR Determination Date (such rate,
the 'British Bankers' Association Interest Settlement Rate') or (2) if such rate
does not appear on Telerate Page 3750 as of 11:00 a.m., London time, on the
applicable LIBOR Determination Date, the Trustee will request the principal
London office of each of four major reference banks in the London interbank
market selected by the Trustee to provide such banks' respective offered
quotations (expressed as a percentage per annum) to prime banks in the London
interbank market for deposits in U.S. Dollars for a period of one month as of
11:00 a.m., London time, on such LIBOR Determination Date. If at least two such
offered quotations are so provided, LIBOR will be the arithmetic mean of such
quotations. If fewer than two such quotations are so provided, the Trustee will
request each of three major banks in New York City selected by the Trustee to
provide such banks' respective rates (expressed as a percentage per annum) for
loans in U.S. Dollars to leading European banks for a period of one month as of
approximately 11:00 a.m., New York City time, on the first day of the applicable
Interest Accrual Period, and LIBOR will be the arithmetic mean of the quotations
so provided. If on any LIBOR Determination Date the Trustee is required but is
unable to determine LIBOR in the manner provided in the immediately preceding
sentence, LIBOR for the related Interest Accrual Period will be LIBOR as
determined on the previous LIBOR Determination Date, or, in the case of the
first LIBOR Determination Date, 5.65625% per annum. As used herein with respect
to a LIBOR Determination Date, 'London banking day' means a day on which banks
are open for dealing in foreign currency and exchange in London.
 
     The establishment of LIBOR by the Trustee and the Trustee's subsequent
calculation of the rates of interest applicable to the Class 4-A2 and Class 4-A3
Certificates for the relevant Interest Accrual Period, in the absence of
manifest error, will be final and binding. The Certificate Interest Rates on the
Class 4-A2 and Class 4-A3 Certificates for any Interest Accrual Period may be
obtained by calling the Trustee at (617) 664-5500.
 
                                      A4-6

<PAGE>

     Principal.  All payments and other amounts received in respect of principal
of the Pool 4 Mortgage Loans will be allocated between (i) the Pool 4
Certificates (other than the Class 4-PO Certificates), on the one hand, and (ii)
the Class 4-PO Certificates, on the other, in each case based on the applicable
Non-PO Percentage and the applicable PO Percentage, respectively, of such
amounts.
 
     The 'Non-PO Percentage' with respect to any Pool 4 Mortgage Loan with a Net
Mortgage Rate ('NMR') less than 6.75% per annum (each such Mortgage Loan, a
'Pool 4 Discount Mortgage Loan') will be the fraction, expressed as a
percentage, equal to NMR divided by 6.75%. The 'Non-PO Percentage' with respect
to any Pool 4 Mortgage Loan with a Net Mortgage Rate equal to or greater than
6.75% (each such Mortgage Loan, a 'Pool 4 Non-Discount Mortgage Loan') will be
100%. The 'PO Percentage' with respect to any Pool 4 Discount Mortgage Loan will
be the fraction, expressed as a percentage, equal to (6.75% - NMR) divided by
6.75%. The 'PO Percentage' with respect to any Pool 4 Non-Discount Mortgage Loan
will be 0%.
 
     The initial Class Certificate Principal Balance of the Class 4-PO
Certificates, which are not offered hereby, will be approximately $329,192
subject to the variance described herein.
 
     Distributions in reduction of the Class Certificate Principal Balance of
each Pool 4 Senior Certificate will be made on each Distribution Date pursuant
to priority third under '--Allocation of Pool 4 Available Funds' above. In
accordance with priority third, the Pool 4 Available Funds remaining after the
distribution of interest on the Pool 4 Senior Certificates (other than the Class
4-PO Certificates) will be allocated to such Certificates in an aggregate amount
not to exceed the sum of the Pool 4 Senior Optimal Principal Amount and the
Class 4-PO Principal Distribution Amount for such Distribution Date.
Distributions in reduction of the Class Certificate Principal Balances of the
Class 4-M, Class 4-B1 and Class 4-B2 Certificates will be made pursuant to
priorities fifth, sixth and seventh, respectively, under '--Allocation of Pool 4
Available Funds' above. In accordance with each such priority, the Pool 4
Available Funds, if any, remaining after distributions of principal and interest
on the Pool 4 Senior Certificates and payments in respect of the Class 4-PO
Deferred Amount on such Distribution Date will be allocated to the Class 4-M,
Class 4-B1 and Class 4-B2 Certificates in an amount equal to each such Class's
Allocable Share for such Distribution Date, provided that no distribution of
principal will be made on any such Class until any related Class ranking prior
thereto has received distributions of interest and principal, and such Class has
received distributions of interest, on such Distribution Date. The Pool 4 Group
II Senior Certificates will not receive any distributions in respect of
scheduled payments, prepayments or certain other unscheduled recoveries of
principal on the Pool 4 Mortgage Loans during the first five years after the
Cut-off Date, except as otherwise described herein on or following the earlier
of the Pool 4 Group I Final Distribution Date or the Pool 4 Cross-Over Date.
 
     The 'Pool 4 Senior Optimal Principal Amount' with respect to each
Distribution Date will be an amount equal to the sum of (i) the Pool 4 Senior
Percentage (as defined herein) of the applicable Non-PO Percentage of all
scheduled payments of principal due on each Pool 4 Mortgage Loan on the first
day of the month in which the Distribution Date occurs, as specified in the
amortization schedule at the time applicable thereto (after adjustment for
previous principal prepayments and the principal portion of Debt Service
Reductions in respect of Pool 4 after the Pool 4 Bankruptcy Coverage Termination
Date, but before any adjustment to such amortization schedule by reason of any
other bankruptcy or similar proceeding or any moratorium or similar waiver or
grace period), (ii) the Pool 4 Senior Prepayment Percentage (as defined herein)
of the applicable Non-PO Percentage of the Scheduled Principal Balance of each
Pool 4 Mortgage Loan which was the subject of a prepayment in full received by
the Company (or, in the case of a Pool 4 Mortgage Loan master-serviced by the
Company, of which the Company receives notice) during the applicable Prepayment
Period (as defined below), (iii) the Pool 4 Senior Prepayment Percentage of the
applicable Non-PO Percentage of all partial prepayments of principal received in
respect of Pool 4 during the applicable Prepayment Period, (iv) the lesser of
(a) the Pool 4 Senior Prepayment Percentage of the applicable Non-PO Percentage
of the sum of (w) the net liquidation proceeds allocable to principal on each
Pool 4 Mortgage Loan which became a Liquidated Mortgage Loan during the related
Prepayment Period (other than Pool 4 Mortgage Loans described in clause (x)) and
(x) the principal balance of each Pool 4 Mortgage Loan that was purchased by a
private mortgage insurer during the related Prepayment Period as an alternative
to paying a claim under the related insurance policy, and (b) the Pool 4 Senior
Percentage of the applicable Non-PO Percentage of the sum of (w) the Scheduled
Principal Balance of each Pool 4 Mortgage Loan which became a Liquidated
Mortgage Loan during the related Prepayment Period (other than Pool 4 Mortgage
Loans described in clause (x)) and (x) the Scheduled Principal Balance of each
Pool 4 Mortgage Loan that was purchased by a private mortgage insurer during the
related Prepayment Period as an alternative to paying
 
                                      A4-7

<PAGE>

a claim under the related insurance policy less (y) in the case of clause (b),
the Pool 4 Senior Percentage of the applicable Non-PO Percentage of the
principal portion of Excess Losses (other than Debt Service Reductions) in
respect of Pool 4 during the related Prepayment Period, and (v) the Pool 4
Senior Prepayment Percentage of the applicable Non-PO Percentage of the sum of
(a) the Scheduled Principal Balance of each Pool 4 Mortgage Loan which was
repurchased by the Company in connection with such Distribution Date and (b) the
difference, if any, between the Scheduled Principal Balance of a Pool 4 Mortgage
Loan that has been replaced by the Company with a substitute Pool 4 Mortgage
Loan pursuant to the Agreement in connection with such Distribution Date and the
Scheduled Principal Balance of such substitute Pool 4 Mortgage Loan.
 
     With respect to any Pool 4 Mortgage Loan that was the subject of a
voluntary prepayment in full and any Distribution Date, the 'Prepayment Period'
is the period from the sixteenth day of the month preceding the month of such
Distribution Date (or, in the case of the first Distribution Date, from the
Cut-off Date) through the fifteenth day of the month of such Distribution Date.
With respect to any other unscheduled prepayment of principal of any Pool 4
Mortgage Loan and any Distribution Date, the Prepayment Period is the month
preceding the month of such Distribution Date.
 
     The 'Class 4-A4 Principal Distribution Amount' for any Distribution Date
will equal the product of (a) the Pool 4 Senior Optimal Principal Amount for
such date multiplied by (b) the Class 4-A4 Percentage for such date multiplied
by (c) the Class 4-A4 Distribution Percentage for such date. Notwithstanding the
foregoing, (i) on the Pool 4 Group I Final Distribution Date, the Class 4-A4
Principal Distribution Amount will be increased by any Pool 4 Senior Optimal
Principal Amount remaining after distributions of principal have been made on
the Pool 4 Group I Senior Certificates, and (ii) following the Pool 4 Group I
Final Distribution Date, the Class 4-A4 Principal Distribution Amount will equal
the Pool 4 Senior Optimal Principal Amount.
 
     The 'Class 4-A4 Distribution Percentage' for any Distribution Date will
equal 0% through the Distribution Date in July 2003; 30% thereafter through the
Distribution Date in July 2004; 40% thereafter through the Distribution Date in
July 2005; 60% thereafter through the Distribution Date in July 2006; 80%
thereafter through the Distribution Date in July 2007; and 100% thereafter.
 
     The 'Class 4-A4 Percentage' for any Distribution Date will equal the
percentage (carried to six places rounded up) obtained by dividing (x) the Class
Certificate Principal Balance of the Class 4-A4 Certificates immediately
preceding such Distribution Date by (y) the aggregate Class Certificate
Principal Balance of all the Pool 4 Senior Certificates (other than the Class
4-PO Certificates) immediately preceding such Distribution Date. The initial
Class 4-A4 Percentage is expected to be approximately 10.44%.
 
     The 'Pool 4 Senior Percentage' on any Distribution Date will equal the
lesser of (i) 100% and (ii) the percentage (carried to six places rounded up)
obtained by dividing the aggregate Certificate Principal Balances of all the
Pool 4 Senior Certificates (less the Class Certificate Principal Balance of the
Class 4-PO Certificates) immediately preceding such Distribution Date by the
aggregate Certificate Principal Balances of all the Pool 4 Certificates (less
the Class Certificate Principal Balance of the Class 4-PO Certificates)
immediately preceding such Distribution Date. The initial Pool 4 Senior
Percentage is expected to be approximately 95.99%.
 
     The 'Pool 4 Senior Prepayment Percentage' on any Distribution Date
occurring during the periods set forth below will be as follows:
 
<TABLE>
<CAPTION>
PERIOD (DATES INCLUSIVE)      POOL 4 SENIOR PREPAYMENT PERCENTAGE
<S>                           <C>
August 1998 - July 2003       100%                              
August 2003 - July 2004       Pool 4 Senior Percentage plus 70% of the Pool 4 Junior
                              Percentage                              
August 2004 - July 2005       Pool 4 Senior Percentage plus 60% of the Pool 4 Junior
                              Percentage                              
August 2005 - July 2006       Pool 4 Senior Percentage plus 40% of the Pool 4 Junior
                              Percentage                              
August 2006 - July 2007       Pool 4 Senior Percentage plus 20% of the Pool 4 Junior
                              Percentage
August 2007 and thereafter    Pool 4 Senior Percentage
</TABLE>
 
     Notwithstanding the foregoing, if the Pool 4 Senior Percentage on any
Distribution Date exceeds the initial Pool 4 Senior Percentage, the Pool 4
Senior Prepayment Percentage for such Distribution Date will equal 100%.
 
                                      A4-8
<PAGE>

     In addition, no reduction of the Pool 4 Senior Prepayment Percentage below
the level in effect for the most recent prior period specified in the table
above shall be effective on any Distribution Date (such limitation being the
'Pool 4 Senior Prepayment Percentage Stepdown Limitation') unless, as of the
last day of the month preceding such Distribution Date, either:
 
          (A)(i) the aggregate Scheduled Principal Balance of Pool 4 Mortgage
     Loans delinquent 60 days or more (including for this purpose any Pool 4
     Mortgage Loans in foreclosure and Pool 4 Mortgage Loans with respect to
     which the related Mortgaged Property has been acquired by the Trust Fund
     for Pool 4) does not exceed 50% of the aggregate Class Certificate
     Principal Balance of the Pool 4 Junior Certificates as of such date and
     (ii) cumulative Realized Losses in respect of Pool 4 do not exceed (a) 30%
     of the aggregate Class Certificate Principal Balance of the Pool 4 Junior
     Certificates as of the date of issuance of the Certificates (the 'Original
     Pool 4 Junior Principal Balance') if such Distribution Date occurs between
     and including August 2003 and July 2004, (b) 35% of the Original Pool 4
     Junior Principal Balance if such Distribution Date occurs between and
     including August 2004 and July 2005, (c) 40% of the Original Pool 4 Junior
     Principal Balance if such Distribution Date occurs between and including
     August 2005 and July 2006, (d) 45% of the Original Pool 4 Junior Principal
     Balance if such Distribution Date occurs between and including August 2006
     and July 2007, and (e) 50% of the Original Pool 4 Junior Principal Balance
     if such Distribution Date occurs during or after August 2007; or
 
          (B)(i) the aggregate Scheduled Principal Balance of Pool 4 Mortgage
     Loans delinquent 60 days or more (including for this purpose any Pool 4
     Mortgage Loans in foreclosure and Pool 4 Mortgage Loans with respect to
     which the related Mortgaged Property has been acquired by the Trust Fund
     for Pool 4), averaged over the last three months, as a percentage of the
     aggregate Scheduled Principal Balance of all Pool 4 Mortgage Loans averaged
     over the last three months, does not exceed 4%, and (ii) cumulative
     Realized Losses in respect of Pool 4 do not exceed (a) 10% of the Original
     Pool 4 Junior Principal Balance if such Distribution Date occurs between
     and including August 2003 and July 2004, (b) 15% of the Original Pool 4
     Junior Principal Balance if such Distribution Date occurs between and
     including August 2004 and July 2005, (c) 20% of the Original Pool 4 Junior
     Principal Balance if such Distribution Date occurs between and including
     August 2005 and July 2006, (d) 25% of the Original Pool 4 Junior Principal
     Balance if such Distribution Date occurs between and including August 2006
     and July 2007, and (e) 30% of the Original Pool 4 Junior Principal Balance
     if such Distribution Date occurs during or after August 2007.
 
     The 'Class 4-PO Principal Distribution Amount' with respect to each
Distribution Date will be an amount equal to the sum of (i) the applicable PO
Percentage of all scheduled payments of principal due on each Pool 4 Mortgage
Loan on the first day of the month in which the Distribution Date occurs, as
specified in the amortization schedule at the time applicable thereto (after
adjustment for previous principal prepayments and the principal portion of Debt
Service Reductions in respect of Pool 4 after the Bankruptcy Coverage
Termination Date in respect of Pool 4, but before any adjustment to such
amortization schedule by reason of any other bankruptcy or similar proceeding or
any moratorium or similar waiver or grace period), (ii) the applicable PO
Percentage of the Scheduled Principal Balance of each Pool 4 Mortgage Loan which
was the subject of a prepayment in full received by the Company (or, in the case
of a Pool 4 Mortgage Loan master-serviced by the Company, of which the Company
receives notice) during the related Prepayment Period, (iii) the applicable PO
Percentage of all partial prepayments of principal received during the related
Prepayment Period, (iv) the applicable PO Percentage of the sum of (w) the net
liquidation proceeds allocable to principal on each Pool 4 Mortgage Loan which
became a Liquidated Mortgage Loan during the related Prepayment Period (other
than Pool 4 Mortgage Loans described in clause (x)) and (x) the principal
balance of each Pool 4 Mortgage Loan that was purchased by a private mortgage
insurer during the related Prepayment Period as an alternative to paying a claim
under the related insurance policy, and (v) the applicable PO Percentage of the
sum of (a) the Scheduled Principal Balance of each Pool 4 Mortgage Loan which
was repurchased by the Company in connection with such Distribution Date and (b)
the difference, if any, between the Scheduled Principal Balance of a Pool 4
Mortgage Loan that has been replaced by the Company with a substitute Pool 4
Mortgage Loan pursuant to the Agreement in connection with such Distribution
Date and the Scheduled Principal Balance of such substitute Pool 4 Mortgage
Loan. For purposes of clauses (ii) and (v) above, the Scheduled Principal
Balance of a Pool 4 Mortgage Loan will be reduced by the amount of any Deficient
Valuation that occurred on or before the Pool 4 Bankruptcy Coverage Termination
Date.
 
                                      A4-9

<PAGE>

     The 'Pool 4 Group I Final Distribution Date' is the Distribution Date on
which the Class Certificate Principal Balance of each of the Pool 4 Group I
Senior Certificates has been reduced to zero.
 
     The 'Pool 4 Junior Percentage' on any Distribution Date will equal 100%
minus the Pool 4 Senior Percentage. The 'Pool 4 Junior Prepayment Percentage'
will equal 100% minus the Pool 4 Senior Prepayment Percentage, except that on
any Distribution Date after the respective Class Certificate Principal Balances
of the Pool 4 Senior Certificates (other than the Class 4-PO Certificates) have
each been reduced to zero (the 'Pool 4 Senior Final Distribution Date'), the
Pool 4 Junior Prepayment Percentage will equal 100%. The initial Pool 4 Junior
Percentage is expected to be approximately 4.01%.
 
     The 'Pool 4 Junior Optimal Principal Amount' with respect to each
Distribution Date will be an amount equal to the sum of the following (but in no
event greater than the aggregate Class Certificate Principal Balances of the
Pool 4 Junior Certificates immediately prior to such Distribution Date): (i) the
Pool 4 Junior Percentage of the applicable Non-PO Percentage of all scheduled
payments of principal due on each outstanding Pool 4 Mortgage Loan on the first
day of the month in which the Distribution Date occurs, as specified in the
amortization schedule at the time applicable thereto (after adjustment for
previous principal prepayments and the principal portion of Debt Service
Reductions in respect of Pool 4 after the Pool 4 Bankruptcy Coverage Termination
Date, but before any adjustment to such amortization schedule by reason of any
other bankruptcy or similar proceeding or any moratorium or similar waiver or
grace period), (ii) the Pool 4 Junior Prepayment Percentage of the applicable
Non-PO Percentage of the Scheduled Principal Balance of each Pool 4 Mortgage
Loan which was the subject of a prepayment in full received by the Company (or,
in the case of a Pool 4 Mortgage Loan master-serviced by the Company, of which
the Company receives notice) during the related Prepayment Period, (iii) the
Pool 4 Junior Prepayment Percentage of the applicable Non-PO Percentage of all
partial prepayments of principal received in respect of Pool 4 during the
related Prepayment Period (plus, on the Pool 4 Senior Final Distribution Date,
100% of any Pool 4 Senior Optimal Principal Amount remaining undistributed on
each date), (iv) the excess, if any, of the sum of (a) the applicable Non-PO
Percentage of the net liquidation proceeds allocable to principal received
during the related Prepayment Period in respect of each Liquidated Mortgage Loan
in Pool 4 (other than Pool 4 Mortgage Loans described in clause (b)) and (b) the
applicable Non-PO Percentage of the principal balance of each Pool 4 Mortgage
Loan that was purchased by a private mortgage insurer during the related
Prepayment Period as an alternative to paying a claim under the related
insurance policy over (c) the sum of the amounts distributable to the Pool 4
Senior Certificateholders (other than the holders of the Class 4-PO
Certificates) pursuant to clause (iv) of the definition of Pool 4 Senior Optimal
Principal Amount on such Distribution Date, and (v) the Pool 4 Junior Prepayment
Percentage of the applicable Non-PO Percentage of the sum of (a) the Scheduled
Principal Balance of each Pool 4 Mortgage Loan which was repurchased by the
Company in connection with such Distribution Date and (b) the difference, if
any, between the Scheduled Principal Balance of a Pool 4 Mortgage Loan that has
been replaced by the Company with a substitute Pool 4 Mortgage Loan pursuant to
the Agreement in connection with such Distribution Date and the Scheduled
Principal Balance of such substitute Pool 4 Mortgage Loan.
 
     The 'Allocable Share' with respect to any Class of Pool 4 Junior
Certificates on any Distribution Date will generally equal such Class's pro rata
share (based on the Class Certificate Principal Balance of each Class entitled
thereto) of each of the components of the Pool 4 Junior Optimal Principal Amount
described above; provided, that, except as described in the second succeeding
sentence, no Class 4-B Certificate shall be entitled on any Distribution Date to
receive distributions pursuant to clauses (ii), (iii) and (v) of the definition
of Pool 4 Junior Optimal Principal Amount unless the Class Prepayment
Distribution Trigger for the related Class is satisfied for such Distribution
Date. The 'Class Prepayment Distribution Trigger' for a Class of Class 4-B
Certificates for any Distribution Date is satisfied if the fraction (expressed
as a percentage), the numerator of which is the aggregate Class Certificate
Principal Balance of such Class and each Class subordinate thereto, if any, and
the denominator of which is the aggregate Scheduled Principal Balance of the
Pool 4 Mortgage Loans with respect to such Distribution Date, equals or exceeds
such percentage calculated as of the Closing Date. If, on any Distribution Date,
the Class Certificate Principal Balance of the Class 4-M Certificates or of any
Class of Class 4-B Certificates for which the related Class Prepayment
Distribution Trigger was satisfied on such Distribution Date is reduced to zero,
any amounts distributable to such Class pursuant to clauses (ii), (iii) and (v)
of the definition of Pool 4 Junior Optimal Principal Amount, to the extent of
such Class's remaining Allocable Share, shall be distributed to the remaining
Classes of Pool 4 Junior Certificates in reduction of their respective Class
Certificate Principal Balances in order of priority. If the Class Prepayment
Distribution Trigger
 
                                     A4-10

<PAGE>

is not satisfied for any Class of Class 4-B Certificates on any Distribution
Date, this may have the effect of accelerating the amortization of more senior
ranking Classes of Pool 4 Junior Certificates. On any Distribution Date, any
reduction in funds available for distribution to the Classes of Pool 4 Junior
Certificates resulting from a distribution of the Class 4-PO Deferred Amount to
the Class 4-PO Certificates will be allocated to the Classes of Pool 4 Junior
Certificates, in reduction of the Allocable Shares thereof, in inverse order of
priority.
 
     Example of Distributions.  For an example of hypothetical distributions on
the Certificates for a particular Distribution Date, see 'Description of the
Certificates--Example of Distributions' in the accompanying Prospectus.
 
ALLOCATION OF REALIZED LOSSES ON THE POOL 4 CERTIFICATES
 
     For the definitions of 'Realized Loss,' 'Liquidated Mortgage Loan,'
'Deficient Valuation,' 'Debt Service Reduction,' 'Bankruptcy Loss,' 'Fraud
Loss,' 'Excess Loss' and 'Special Hazard Loss,' see 'Pool 1 Annex--Allocation of
Realized Losses on the Pool 1 Certificates.'
 
     On each Distribution Date, the applicable PO Percentage of the principal
portion of any Realized Loss (including any Excess Loss, but not including any
Debt Service Reduction) on a Pool 4 Discount Mortgage Loan will be allocated to
the Class 4-PO Certificates until the Class Certificate Principal Balance
thereof is reduced to zero. With respect to any Distribution Date through the
Pool 4 Cross-Over Date, the aggregate of all amounts so allocable to the Class
4-PO Certificates on such date in respect of Realized Losses other than Excess
Losses in respect of the Pool 4 Discount Mortgage Loans and all amounts
previously allocated in respect of such losses to the Class 4-PO Certificates
and not distributed on prior Distribution Dates will be the 'Class 4-PO Deferred
Amount.' To the extent funds are available therefor on any Distribution Date
through the Pool 4 Cross-Over Date, distributions in respect of the Class 4-PO
Deferred Amount will be made on the Class 4-PO Certificates in accordance with
priority fourth under '--Distributions on the Pool 4 Certificates--Allocation of
Pool 4 Available Funds' above. Any distribution of Pool 4 Available Funds in
respect of the Class 4-PO Deferred Amount will not reduce the Class Certificate
Principal Balance of the Class 4-PO Certificates. No interest will accrue on the
Class 4-PO Deferred Amount. On each Distribution Date through the Pool 4
Cross-Over Date, the Class Certificate Principal Balance of the lowest ranking
Class of Pool 4 Junior Certificates then outstanding will be reduced by the
amount of any distributions in respect of the Class 4-PO Deferred Amount on such
Distribution Date, through the operation of the Class 4-PO Deferred Payment
Writedown Amount. After the Pool 4 Cross-Over Date, no distributions will be
made in respect of, and losses allocated to the Class 4-PO Certificates will not
be added to, the Class 4-PO Deferred Amount. Any distribution of Unanticipated
Recoveries (as defined in the accompanying Prospectus) in respect of Pool 4 on
the Class 4-PO Certificates will be adjusted to take into account the Class 4-PO
Deferred Amount previously paid to such Class as specified in the Agreement. See
'Servicing of the Mortgage Loans and Contracts--Unanticipated Recoveries of
Losses on the Mortgage Loans' in the accompanying Prospectus.
 
     The applicable Non-PO Percentage of the principal portion of any Realized
Loss (other than an Excess Loss or a Debt Service Reduction) on a Pool 4
Mortgage Loan for any Distribution Date will not be allocated to any Pool 4
Senior Certificates until the Pool 4 Cross-Over Date. Prior to the Pool 4
Cross-Over Date (and on such date under certain circumstances), the applicable
Non-PO Percentage of the principal portion of any such Realized Loss will be
allocated among the outstanding Classes of Pool 4 Junior Certificates, in
inverse order of priority, until the Class Certificate Principal Balance of each
such Class has been reduced to zero (i.e., such Realized Losses will be
allocated first to the Class 4-B5 Certificates while such Certificates are
outstanding, second to the Class 4-B4 Certificates, and so on). The applicable
Non-PO Percentage of the principal portion of any Excess Loss (other than a Debt
Service Reduction) on a Pool 4 Mortgage Loan for any Distribution Date will be
allocated pro rata among all outstanding Classes of Pool 4 Certificates (other
than the Class 4-PO Certificates) based on their Class Certificate Principal
Balances. Commencing on the Pool 4 Cross-Over Date, the applicable Non-PO
Percentage of the principal portion of any Realized Loss (other than a Debt
Service Reduction) in respect of the Pool 4 Mortgage Loans will be allocated
among the outstanding Classes of Pool 4 Senior Certificates (other than the
Class 4-PO Certificates) pro rata based upon their Class Certificate Principal
Balances.
 
     No reduction of the Class Certificate Principal Balance of any Class of
Pool 4 Certificates will be made on any Distribution Date on account of any
Realized Loss to the extent that such reduction would have the effect of
 
                                     A4-11

<PAGE>

reducing the aggregate Certificate Principal Balance of all of the Pool 4
Certificates as of such Distribution Date to an amount less than the Pool
Scheduled Principal Balance of Pool 4 as of the first day of the month of such
Distribution Date, less any Deficient Valuations in respect of Pool 4 Mortgage
Loans occurring on or prior to the Pool 4 Bankruptcy Coverage Termination Date
(such limitation being the 'Pool 4 Loss Allocation Limitation').
 
     The principal portion of Debt Service Reductions in respect of the Pool 4
Mortgage Loans will not be allocated in reduction of the Certificate Principal
Balance of any Pool 4 Certificate. However, after the Pool 4 Bankruptcy Coverage
Termination Date, the amounts distributable under clause (i) of each of the
definitions of Pool 4 Senior Optimal Principal Amount, Class 4-PO Principal
Distribution Amount and Pool 4 Junior Optimal Principal Amount will be reduced
by the amount of any Debt Service Reductions in respect of the Pool 4 Mortgage
Loans. Regardless of when they occur, such Debt Service Reductions may reduce
the amount of Pool 4 Available Funds otherwise available for distribution on a
Distribution Date. As a result of the subordination of the Pool 4 Junior
Certificates in right of distribution relative to the Pool 4 Senior
Certificates, any Debt Service Reductions in respect of the Pool 4 Mortgage
Loans prior to the Pool 4 Bankruptcy Coverage Termination Date will be borne by
the Pool 4 Junior Certificates (to the extent then outstanding) in inverse order
of priority.
 
     All allocations of Realized Losses in respect of the Pool 4 Mortgage Loans
to a Class of Pool 4 Certificates will be accomplished on a Distribution Date by
reducing the applicable Class Certificate Principal Balance by the appropriate
share of any such losses occurring during the month preceding the month of such
Distribution Date and, accordingly, will be taken into account in determining
the distributions of principal and interest on the Pool 4 Certificates
commencing on the following Distribution Date, except that the aggregate amount
of the principal portion of any Realized Losses (other than Excess Losses and
Debt Service Reductions) to be allocated to the Class 4-PO Certificates on any
Distribution Date through the Pool 4 Cross-Over Date will also be taken into
account in determining distributions in respect of the Class 4-PO Deferred
Amount for such Distribution Date.
 
     The interest portion of all Realized Losses in respect of the Pool 4
Mortgage Loans will be allocated among the outstanding Classes of Pool 4
Certificates offered hereby to the extent described under '--Distributions on
the Pool 4 Certificates--Interest' above. For purposes of making certain
calculations under the Agreement, the interest portion of any Realized Loss in
respect of a Pool 4 Mortgage Loan will be allocated among the Base Servicing
Fee, the Supplemental Servicing Fee and interest at the excess of the Mortgage
Rate over the sum of the Base Servicing Fee and the Supplemental Servicing Fee
in proportion to the amount of accrued interest in respect of such Pool 4
Mortgage Loan that would have been so allocated in the absence of any such
shortfall.
 
     The applicable Non-PO Percentage of any Deficient Valuation in respect of a
Pool 4 Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 4 Junior Certificates until the Pool 4 Bankruptcy Coverage
Termination Date. The 'Pool 4 Bankruptcy Coverage Termination Date' is the
Distribution Date upon which the Pool 4 Bankruptcy Loss Amount has been reduced
to zero or a negative number (or the Pool 4 Cross-Over Date, if earlier). On
each Distribution Date, the 'Pool 4 Bankruptcy Loss Amount' will equal
approximately $100,000 (approximately 0.05% of the aggregate Scheduled Principal
Balances of the Pool 4 Mortgage Loans as of the Cut-off Date), subject to
reduction as described in the Agreement, minus the aggregate amount of previous
Bankruptcy Losses in respect of the Pool 4 Mortgage Loans. The Pool 4 Bankruptcy
Loss Amount and the manner of reduction thereof described in the Agreement may
be reduced or modified upon written confirmation from Fitch and S&P (each as
defined herein) to the effect that such reduction or modification will not
adversely affect the then current ratings of the Pool 4 Senior Certificates by
Fitch and S&P. Such reduction may adversely affect the coverage provided by
subordination with respect to Bankruptcy Losses in respect of the Pool 4
Mortgage Loans.
 
     The applicable Non-PO Percentage of any Fraud Loss in respect of a Pool 4
Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 4 Junior Certificates until the Pool 4 Fraud Coverage
Termination Date. The 'Pool 4 Fraud Coverage Termination Date' is the
Distribution Date upon which the Fraud Loss Amount has been reduced to zero or a
negative number (or the Pool 4 Cross-Over Date, if earlier). Upon the initial
issuance of the Certificates, the 'Pool 4 Fraud Loss Amount' will equal
approximately $2,013,643 (approximately 1.00% of the aggregate Scheduled
Principal Balances of the Pool 4 Mortgage Loans as of the Cut-off Date). As of
any Distribution Date prior to the first anniversary of the Cut-off Date, the
Pool 4 Fraud Loss Amount will equal approximately $2,013,643, minus the
aggregate amount of Fraud Losses that would have been allocated to the Pool 4
Junior Certificates in the absence of the Pool 4 Loss Allocation Limitation
since the Cut-off Date. As of any Distribution Date from the first to the fifth
anniversaries of the Cut-
 
                                     A4-12

<PAGE>

off Date, the Pool 4 Fraud Loss Amount will equal (1) the lesser of (a) the Pool
4 Fraud Loss Amount as of the most recent anniversary of the Cut-off Date and
(b) 1% (from the first to but excluding the third anniversaries of the Cut-off
Date) or 0.5% (from and including the third to but excluding the fifth
anniversaries of the Cut-off Date) of the aggregate outstanding principal
balance of all of the Pool 4 Mortgage Loans as of the most recent anniversary of
the Cut-off Date minus (2) the Fraud Losses that would have been allocated to
the Pool 4 Junior Certificates in the absence of the Pool 4 Loss Allocation
Limitation since the most recent anniversary of the Cut-off Date. As of any
Distribution Date on or after the fifth anniversary of the Cut-off Date, the
Pool 4 Fraud Loss Amount shall be zero.
 
     The applicable Non-PO Percentage of any Special Hazard Loss in respect of a
Pool 4 Mortgage Loan will on each Distribution Date be allocated solely to the
outstanding Pool 4 Junior Certificates until the Pool 4 Special Hazard
Termination Date. The 'Pool 4 Special Hazard Termination Date' is the
Distribution Date upon which the Pool 4 Special Hazard Loss Amount has been
reduced to zero or a negative number (or the Pool 4 Cross-Over Date, if
earlier). Upon the initial issuance of the Certificates, the 'Pool 4 Special
Hazard Loss Amount') will equal approximately $2,520,000 (approximately 1.25% of
the aggregate Scheduled Principal Balances of the Pool 4 Mortgage Loans as of
the Cut-off Date). As of any Distribution Date, the Pool 4 Special Hazard Loss
Amount will equal approximately $2,520,000 minus the sum of (i) the aggregate
amount of Special Hazard Losses that would have been previously allocated to the
Pool 4 Junior Certificates in the absence of the Pool 4 Loss Allocation
Limitation and (ii) the Pool 4 Adjustment Amount. For each anniversary of the
Cut-off Date, the 'Pool 4 Adjustment Amount' shall be equal to the amount, if
any, by which the Pool 4 Special Hazard Loss Amount (without giving effect to
the deduction of the Pool 4 Adjustment Amount for such anniversary) exceeds the
lesser of (A) an amount calculated by the Company and approved by each of Fitch
and S&P, which amount shall not be less than $500,000, and (B) the greater of
(x) 1% (or if greater than 1%, the highest percentage of Pool 4 Mortgage Loans
by principal balance secured by Mortgaged Properties in any California zip code)
of the outstanding principal balance of all the Pool 4 Mortgage Loans on the
Distribution Date immediately preceding such anniversary and (y) twice the
outstanding principal balance of the Pool 4 Mortgage Loan which has the largest
outstanding principal balance on the Distribution Date immediately preceding
such anniversary.
 
             POOL 4 YIELD AND WEIGHTED AVERAGE LIFE CONSIDERATIONS
 
YIELD
 
     The effective yields on the Pool 4 Certificates will depend upon, among
other things, the price at which such Certificates are purchased and the rate
and timing of payments of principal (including both scheduled and unscheduled
payments) of the Pool 4 Mortgage Loans.
 
     The yields to investors will be sensitive in varying degrees to the rate of
prepayments on the Pool 4 Mortgage Loans. The extent to which the yield to
maturity of a Certificate is sensitive to prepayments will depend upon the
degree to which it is purchased at a discount or premium. In the case of
Certificates purchased at a premium, faster than anticipated rates of principal
payments on the Mortgage Loans in Pool 4 could result in actual yields to
investors in such Certificates that are lower than the anticipated yields. In
the case of Certificates purchased at a discount, slower than anticipated rates
of principal payments on the Mortgage Loans in Pool 4 could result in actual
yields to investors in such Certificates that are lower than the anticipated
yields.
 
     Rapid rates of prepayments on the Pool 4 Mortgage Loans are likely to
coincide with periods of low prevailing interest rates. During such periods, the
yields at which an investor in the Pool 4 Certificates may be able to reinvest
amounts received as payments on the investor's Certificates may be lower than
the yield on such Certificates. Conversely, slow rates of prepayments on the
Pool 4 Mortgage Loans are likely to coincide with periods of high prevailing
interest rates. During such periods, the amount of payments available to an
investor for reinvestment at such high rates may be relatively low.
 
     The Pool 4 Mortgage Loans will not prepay at any constant rate, nor will
all of the Pool 4 Mortgage Loans prepay at the same rate at any one time. The
timing of changes in the rate of prepayments may affect the actual yield to an
investor, even if the average rate of principal prepayments is consistent with
the investor's expectation. In general, the earlier a prepayment of principal on
a Pool 4 Mortgage Loan, the greater the effect on the yield to an investor in
the Pool 4 Certificates. As a result, the effect on the yield of principal
prepayments on the Pool 4 Mortgage Loans occurring at a rate higher (or lower)
than the rate anticipated by the investor during
 
                                     A4-13

<PAGE>

the period immediately following the issuance of the Pool 4 Certificates is not
likely to be offset by a later equivalent reduction (or increase) in the rate of
principal prepayments.
 
     The entire amount of the applicable Non-PO Percentage of any principal
payment (including scheduled payments, prepayments and other unscheduled
recoveries of principal) with respect to a Pool 4 Mortgage Loan allocable to the
Pool 4 Senior Certificates will be allocated solely to the outstanding Pool 4
Group I Senior Certificates during the first five years after the Cut-off Date
(except as otherwise described herein on or following the Pool 4 Group I Final
Distribution Date), with such allocation being subject to reduction thereafter
as described herein, provided that such amounts will be allocated pro rata among
all Pool 4 Senior Certificates (other than the Class 4-PO Certificates) on each
Distribution Date after the Pool 4 Cross-Over Date. This allocation between the
Pool 4 Group I Senior Certificates and the Pool 4 Group II Senior Certificates
is designed to accelerate the allocation of principal payments, prepayments and
certain other unscheduled recoveries on the Pool 4 Mortgage Loans to holders of
the Pool 4 Group I Senior Certificates relative to that of the Pool 4 Group II
Senior Certificates through the Pool 4 Cross-Over Date.
 
     The Pool 4 Mortgage Loans will bear interest at fixed Mortgage Rates,
payable in arrears. Each monthly interest payment on a Mortgage Loan is
calculated as 1/12th of the applicable Mortgage Rate multiplied by the
outstanding principal balance of such Mortgage Loan on the first day of the
month.
 
     The effective yield to holders of Pool 4 Certificates offered hereby will
be lower than the yield otherwise produced by the applicable Certificate
Interest Rate and the applicable purchase prices thereof because, while interest
will accrue from the first day of each month, the distribution of such interest
will not be made until the 25th day (or if such day is not a business day, the
immediately following business day) of the month following the month of accrual.
In addition, the effective yield on the Pool 4 Certificates will be affected by
any Net Interest Shortfall and the interest portion of certain losses in respect
of Pool 4. See 'Pool 4 Annex--Distributions on the Pool 4 Certificates' and
'--Allocation of Realized Losses on the Pool 4 Certificates' herein.
 
PREPAYMENTS
 
     The rate of distribution of principal of the Pool 4 Certificates will be
affected primarily by the amount and timing of principal payments received on or
in respect of the Pool 4 Mortgage Loans. Such principal payments will include
scheduled payments as well as voluntary prepayments by borrowers (such as, for
example, prepayments in full due to refinancings, including refinancings made by
the Company in the ordinary course of conducting its mortgage banking business,
some of which refinancings may be solicited by the Company, or prepayments in
connection with biweekly payment programs, participation in which may be
solicited by the Company) and prepayments resulting from foreclosure,
condemnation and other dispositions of the Pool 4 Mortgaged Properties, from
repurchase by the Company of any Mortgage Loan as to which there has been a
material breach of warranty or defect in documentation (or deposit of certain
amounts in respect of delivery of a substitute Mortgage Loan therefor), and from
an exercise by the Company of its option to repurchase a Defaulted Mortgage
Loan. See the last two paragraphs of 'The Pool 4 Mortgage Loans,' above and
'Yield Maturity and Weighted Average Life Considerations' in the Prospectus.
Mortgagors are permitted to prepay the Pool 4 Mortgage Loans, in whole or in
part, at any time without penalty. In addition, as a result of the fact that
Pool 4 Certificateholders will be entitled on any Distribution Date to receive
from the Pool 4 Available Funds distributions of amounts pursuant to clause (iv)
of each of the definitions of the Pool 4 Senior Optimal Principal Amount, Class
4-PO Principal Distribution Amount or Pool 4 Junior Optimal Principal Amount,
the occurrence of defaults on the Pool 4 Mortgage Loans may produce the same
effect on the Pool 4 Certificates receiving such distributions as an early
receipt of principal.
 
     A number of social, economic, tax, geographic, demographic, legal and other
factors may influence prepayments of the Mortgage Loans. These factors may
include the age of such Mortgage Loans, the geographic distribution of the
Mortgaged Properties, the payment terms of such Mortgage Loans, the
characteristics of the borrowers, homeowner mobility, economic conditions
generally and in the geographic area in which the Mortgaged Properties are
located, enforceability of due-on-sale clauses, prevailing interest rates in
relation to the interest rates on such Mortgage Loans, the availability of
mortgage funds, the use of second or 'home equity' mortgage loans by mortgagors,
the use of the properties as second or vacation homes, the extent of the
mortgagors' net equity in the Mortgaged Properties, tax-related considerations
and, where investment properties
 
                                     A4-14

<PAGE>

are securing such Mortgage Loans, the availability of other investments. The
rate of principal payment may also be subject to seasonal variations.
 
     The rate of principal prepayments on pools of conventional mortgage loans
has fluctuated significantly in recent years. Generally, if prevailing interest
rates were to fall significantly below the interest rates on the Pool 4 Mortgage
Loans, such Mortgage Loans would be expected to prepay at higher rates than if
prevailing rates were to remain at or above the interest rates on such Mortgage
Loans. Conversely, if interest rates were to rise significantly above the
interest rates on the Pool 4 Mortgage Loans, such Mortgage Loans would be
expected to prepay at lower rates than if prevailing rates were to remain at or
below the interest rates on such Mortgage Loans.
 
     Voluntary prepayments in full of principal on the Pool 4 Mortgage Loans
received by the Company (or, in the case of Mortgage Loans master-serviced by
the Company, of which the Company receives notice) from the first day through
the fifteenth day of each month (other than the month of the Cut-off Date) are
passed through to the Pool 4 Certificateholders in the month of receipt or
payment. Voluntary prepayments of principal in full received from the sixteenth
day (or, in the case of the month of the Cut-off Date, from the Cut-off Date)
through the last day of each month, and all voluntary partial prepayments of
principal on the Pool 4 Mortgage Loans are passed through to the Pool 4
Certificateholders in the month following the month of receipt or payment. Any
prepayment or liquidation of a Pool 4 Mortgage Loan (by foreclosure proceedings
or by virtue of the purchase of a Pool 4 Mortgage Loan in advance of its stated
maturity as required or permitted by the Agreement) will generally have the
effect of passing through to the Pool 4 Certificateholders principal amounts
which would otherwise be passed through in amortized increments over the
remaining term of such Mortgage Loan.
 
     The entire amount of the applicable Non-PO Percentage of any prepayment and
unscheduled recovery of principal with respect to a Pool 4 Mortgage Loan will be
allocated solely to the outstanding Pool 4 Senior Certificates (other than the
Class 4-PO Certificates and the Pool 4 Group II Senior Certificates, as
described herein) during the first five years after the Cut-off Date (with such
allocation being subject to reduction thereafter as described herein), except as
otherwise described herein on or following the Pool 4 Senior Final Distribution
Date. Among such Pool 4 Senior Certificates, such amounts will be allocated in
the manner described herein. See 'Pool 4 Annex--Distributions on the Pool 4
Certificates--Principal' herein.
 
     When a full prepayment is made on a Mortgage Loan in a Mortgage Pool, the
Mortgagor is charged interest ('Prepayment Interest') on the days in the month
actually elapsed up to the date of such prepayment, at a daily interest rate
(determined by dividing the Mortgage Rate by 360) which is applied to the
principal amount of the loan so prepaid. When such a prepayment is made during
the period from the sixteenth day through the last day of any month (and from
the Cut-off Date through the fifteenth day of the month of the Cut-off Date),
such Prepayment Interest (net of Servicing Fees) is passed through to the Pool 4
Certificateholders in the month following its receipt and the amount of interest
thus distributed to Certificateholders, to the extent not offset by a related
Compensating Interest Payment (as defined herein), will be less than the amount
which would have been distributed in the absence of such prepayment. The payment
of a claim under certain insurance policies or the purchase of a defaulted Pool
4 Mortgage Loan by a private mortgage insurer may also cause a reduction in the
amount of interest passed through. Shortfalls in respect of Pool 4 described in
this paragraph will be borne by the Pool 4 Certificateholders to the extent
described herein. See 'Pool 4 Annex--Distributions on the Pool 4
Certificates--Interest' herein.
 
     Any partial prepayment will be applied to the balance of the related Pool 4
Mortgage Loans as of the first day of the month of receipt, will be passed
through to the Pool 4 Certificateholders in the following month and, to the
extent not offset by a related Compensating Interest Payment, will reduce the
aggregate amount of interest distributable to such Certificateholders in such
month in an amount equal to 30 days of interest at the related Net Mortgage Rate
on the amount of such prepayment.
 
     The yield on certain Classes of the Pool 4 Certificates also may be
affected by any repurchase by the Company of the Pool 4 Mortgage Loans as
described under 'The Pooling and Servicing Agreement-- Termination' herein.
 
                                     A4-15

<PAGE>

SENSITIVITY OF THE CLASS 4-A2 AND CLASS 4-A3 CERTIFICATES
 
     The yield to investors in the Class 4-A2 and Class 4-A3 Certificates will
be highly sensitive to the level of LIBOR. Investors in the Class 4-A2
Certificates should consider (i) the risk that lower than anticipated levels of
LIBOR could result in actual yields that are lower than anticipated yields on
such Certificates and (ii) the fact that the Certificate Interest Rate on the
Class 4-A2 Certificates cannot exceed 9.00% (which would occur whenever LIBOR
equals or exceeds 8.10% for any relevant Interest Accrual Period other than the
first such period). Conversely, investors in the Class 4-A3 Certificates should
consider (i) the risk that higher than anticipated levels of LIBOR could result
in actual yields that are lower than anticipated yields on such Certificates and
(ii) the fact that the rate of interest on the Class 4-A3 Certificates can fall
as low as 0.0% (which will occur whenever LIBOR equals or exceeds 8.10% for any
relevant Interest Accrual Period other than the first such period).
 
     Levels of LIBOR may have little or no correlation to levels of prevailing
mortgage interest rates. It is possible that lower prevailing mortgage interest
rates, which might be expected to result in faster prepayments, could occur
concurrently with an increased level of LIBOR. Conversely, higher prevailing
mortgage interest rates, which might be expected to result in slower
prepayments, could occur concurrently with a decreased level of LIBOR. In
addition, the timing of changes in the level of LIBOR may affect the actual
yield to maturity to an investor in the Class 4-A2 or Class 4-A3 Certificates
even if the average level is consistent with such investor's expectation. In
general, the earlier a change in the level of LIBOR, the greater the effect on
such investor's yield to maturity. As a result, the effect on such investor's
yield to maturity of a level of LIBOR that is higher (or lower) than the rate
anticipated by such investor during the period immediately following the
issuance of the Certificates is not likely to be offset by a subsequent like
reduction (or increase) in the level of LIBOR.
 
     To illustrate the significance of prepayments and of changes in LIBOR on
the distributions on the Class 4-A3 Certificates, the following tables indicate
the pre-tax yields to maturity (on a corporate bond equivalent basis) under the
specified assumptions at the different constant percentages of the Prepayment
Assumption (as defined herein) and the different levels of LIBOR indicated. The
yields were calculated by determining the applicable monthly discount rate
which, when applied to the related assumed stream of cash flows to be paid on
the Class 4-A3 Certificates, would cause the discounted present value of such
cash flows to equal the assumed purchase price for such Certificates stated in
such table and converting the applicable monthly discount rate to a corporate
bond equivalent rate. Implicit in the use of any discounted present value or
internal rate of return calculations such as these is the assumption that
intermediate cash flows are reinvested at the discount rate or internal rate of
return. Thus, these calculations do not take into account the different interest
rates at which investors may be able to reinvest funds received by them as
distributions on the Class 4-A3 Certificates, and, consequently, do not reflect
the return on any investment when such reinvestment rates are considered. It is
not likely that the Mortgage Loans will prepay at a constant level of the
Prepayment Assumption until maturity, that all of the Mortgage Loans will prepay
at the same rate or that LIBOR will not vary. The timing of changes in the rate
of the prepayments may significantly affect the total distributions received,
the date of receipt of such distributions and the actual yield to maturity to
any investor, even if the average rate of principal prepayments is consistent
with an investor's expectation. In general, the earlier the payment of principal
of the Mortgage Loans, the greater the effect on an investor's yield to
maturity. As a result, the effect on an investor's yield of principal
prepayments occurring at a higher rate (or lower) than the rate anticipated by
the investor during the period immediately following the issuance of the
Certificates will not be equally offset by a subsequent like reduction (or
increase) in the rate of principal prepayments. Moreover, as noted above, the
timing of changes in the level of LIBOR may affect the actual yield to maturity
to an investor in a Class 4-A3 Certificate.
 
     The following tables have been prepared based on the Modeling Assumptions
(as defined herein) and the additional assumptions that (i) the assumed purchase
price of the Class 4-A3 Certificates is equal to the sum of (a) the product of
(i) the Class Certificate Principal Balance for such Class (as set forth on the
cover of this Prospectus Supplement) and (ii) the percentage specified in the
table below, and (b) the amount of accrued interest on the Class 4-A3
Certificates from the Cut-off Date to the Closing Date and (ii) on the LIBOR
Determination Date occurring in August 1998 and on each LIBOR Determination Date
thereafter, LIBOR is the level specified.
 
                                     A4-16

<PAGE>

           PRE-TAX YIELD* TO MATURITY OF THE CLASS 4-A3 CERTIFICATES
                  (ASSUMED PURCHASE PRICE PERCENTAGE = 90.5%)
 
<TABLE>
<CAPTION>
LEVELS OF LIBOR                                   0%       200%      275%      350%      500%
- ---------------------------------------------   ------    ------    ------    ------    ------
<S>                                             <C>       <C>       <C>       <C>       <C>
3.65625%.....................................   15.057%   15.121%   15.214%   15.372%   15.950%
4.65625%.....................................   11.642%   11.730%   11.840%   12.016%   12.635%
5.65625%.....................................    8.278%    8.391%    8.517%    8.707%    9.362%
6.65625%.....................................    4.976%    5.109%    5.246%    5.446%    6.133%
7.65625%.....................................    1.748%    1.890%    2.032%    2.236%    2.948%
8.10000% and above...........................    0.341%    0.483%    0.624%    0.828%    1.549%
</TABLE>
 
- ------------------
* Corporate bond equivalent basis
 
     The preceding tables do not take into account the effect of Interest
Shortfalls. The Mortgage Loans will not have all of the characteristics assumed
and there can be no assurance (i) that the Mortgage Loans will prepay at any of
the constant rates shown in the tables or at any particular rate, (ii) that the
pre-tax yields to maturity on the Class 4-A3 Certificates will correspond to any
of the amounts shown herein, (ii) that the levels of LIBOR will correspond to
the levels shown herein or (iv) that the purchase price of the Class 4-A3
Certificates will be as assumed. The tables do not constitute a representation
as to the correlation of any level of LIBOR and the rate of prepayments on the
Mortgage Loans. Each investor must make its own decision as to the appropriate
prepayment assumptions to be used and the appropriate levels of LIBOR to be
assumed in deciding whether or not to purchase a Class 4-A3 Certificate.
 
THE CLASS 4-M, CLASS 4-B1 AND CLASS 4-B2 CERTIFICATES
 
     The rate of payment of principal, the aggregate amount of distributions and
the yield to maturity of the Class 4-M, Class 4-B1 and Class 4-B2 Certificates
will be affected by the rate of prepayments on the Pool 4 Mortgage Loans, as
well as the rate of mortgagor defaults resulting in Realized Losses in respect
of such Mortgage Loans, by the severity of those losses and by the timing
thereof. See 'Pool 4 Annex--Allocation of Realized Losses on the Pool 4
Certificates' herein for a description of the manner in which such losses are
borne by the holders of the Pool 4 Certificates. If the purchaser of a Class
4-M, Class 4-B1 or Class 4-B2 Certificate calculates its anticipated yield based
on an assumed rate of default and amount of Realized Losses in respect of the
related Mortgage Loans that is lower than the default rate and the amount of
losses actually incurred, its actual yield to maturity may be lower than that so
calculated and could be negative. The timing of defaults and losses will also
affect an investor's actual yield to maturity, even if the average rate of
defaults and severity of losses are consistent with an investor's expectations.
In general, the earlier a loss occurs, the greater the effect on an investor's
yield to maturity.
 
     The yields to maturity on the Classes of Class 4-B Certificates with higher
numerical designations will be more sensitive to losses due to liquidations of
defaulted Pool 4 Mortgage Loans than will the yields on such Classes with lower
numerical designations, and the yields to maturity on all of the Class 4-B
Certificates will be more sensitive to such losses than will the yields on the
other Classes of related Certificates. The yields to maturity on the Class 4-M
Certificates will be more sensitive to such losses than will the yields on the
Pool 4 Senior Certificates and less sensitive than the yields on the Class 4-B
Certificates. The Pool 4 Junior Certificates will be more sensitive to losses
due to liquidations of defaulted Pool 4 Mortgage Loans because the entire amount
of such losses will be allocable to such Certificates in inverse order of
priority, either directly or through the allocation of the Class 4-PO Deferred
Payment Writedown Amount, except as provided herein. To the extent not covered
by the Company's advances of delinquent monthly payments of principal and
interest, delinquencies on the Pool 4 Mortgage Loans may also have a relatively
greater effect (i) on the yields to investors in the related Class 4-B
Certificates with higher numerical designations than on the yields to investors
in those related Class 4-B Certificates with lower numerical designations, (ii)
on the yields to investors in the related Class 4-B Certificates than on the
yields to investors in the other Classes of related Certificates, and (iii) on
the yields to investors in the Class 4-M Certificates than on the yields to
investors in the related Senior Certificates. As described above under 'Pool 4
Annex--Distributions on the Pool 4 Certificates--Interest' and '--Principal,'
'--Allocation of Realized Losses on the Pool 4 Certificates' and
'--Subordination,' amounts otherwise distributable to holders of any Class of
Pool 4 Class B Certificates will be made available to protect the holders
 
                                     A4-17

<PAGE>

of the more senior ranking Classes of Pool 4 Certificates against interruptions
in distributions due to certain mortgagor delinquencies. Amounts otherwise
distributable to holders of the Class 4-M Certificates will be made available to
protect the holders of the Pool 4 Senior Certificates against interruptions in
distributions due to certain mortgagor delinquencies. Such delinquencies, even
if subsequently cured, may affect the timing of the receipt of distributions by
the holders of such Junior Certificates.
 
     To the extent that the Class 4-M, Class 4-B1 or Class 4-B2 Certificates are
being purchased at discounts from their initial Class Certificate Principal
Balances, if the purchaser of such a Certificate calculates its yield to
maturity based on an assumed rate of payment of principal faster than that
actually received on such Certificate, its actual yield to maturity may be lower
than that so calculated.
 
FINAL PAYMENT CONSIDERATIONS
 
     The rate of payment of principal of the Pool 4 Certificates will depend on
the rate of payment of principal of the related Mortgage Loans (including
prepayments, defaults, delinquencies and liquidations) which, in turn, will
depend on the characteristics of such Mortgage Loans, the level of prevailing
interest rates and other economic, geographic, social and other factors, and no
assurance can be given as to the actual payment experience. As of the Cut-off
Date, the month and year of the latest scheduled maturity of a Mortgage Loan in
Pool 4 is expected to be July 2028. In addition, to the extent delinquencies and
defaults are not covered by advances made by the Company or offset by the effect
of the subordination of the related Junior Certificates, delinquencies and
defaults could affect the actual maturity of the Certificates offered hereby.
 
WEIGHTED AVERAGE LIVES OF THE POOL 4 CERTIFICATES
 
     The weighted average life of a Certificate is determined by (a) multiplying
the reduction, if any, in the Certificate Principal Balance thereof on each
Distribution Date by the number of years from the date of issuance to such
Distribution Date, (b) summing the results and (c) dividing the sum by the
aggregate reductions in the Certificate Principal Balance of such Certificate.
 
     The weighted average lives of the Pool 4 Certificates will be affected, to
varying degrees, by the rate of principal payments on the Pool 4 Mortgage Loans,
the timing of changes in such rate of payments and the priority sequence of
distributions of principal of such Certificates. The interaction of the
foregoing factors may have different effects on the various Classes of the
Certificates and the effects on any Class may vary at different times during the
life of such Class. Further, to the extent the prices of Classes of Certificates
represent discounts or premiums to their respective original Class Certificate
Principal Balances, variability in the weighted average lives of such Classes of
Certificates could result in variability in the related yields to maturity.
 
     Prepayments on mortgage loans are commonly measured relative to a
prepayment standard or model. The model used in this Prospectus Supplement (the
'Prepayment Assumption') represents an assumed rate of prepayment each month
relative to the then outstanding principal balance of a pool of mortgage loans.
The Prepayment Assumption does not purport to be either a historical description
of the prepayment experience of any pool of mortgage loans or a prediction of
the anticipated rate of prepayment of any pool of mortgage loans, including the
Mortgage Loans in either Mortgage Pool. A prepayment assumption of 100% of the
Prepayment Assumption assumes prepayment rates of 0.2% per annum of the then
outstanding principal balance of such mortgage loans in the first month of the
life of the mortgage loans and increasing by 0.2% per annum in each month
thereafter until the thirtieth month. Beginning in the thirtieth month and in
each month thereafter during the life of the mortgage loans, 100% of the
Prepayment Assumption assumes a constant prepayment rate of 6.0% per annum.
 
     Tables of Pool 4 Class Certificate Principal Balances. The following tables
set forth the percentages of the initial Class Certificate Principal Balance of
each Class of Pool 4 Certificates offered hereby that would be outstanding after
each of the dates shown at the specified constant percentages of the Prepayment
Assumption and the corresponding weighted average life of each such Class of
Pool 4 Certificates. For purposes of calculations under the columns at the
indicated percentages of the Prepayment Assumption set forth in the tables, it
is assumed with respect to the Pool 4 Mortgage Loans (the 'Pool 4 Modeling
Assumptions') that (i) the distributions in respect of the Pool 4 Certificates
are made and received in cash on the 25th day of each month commencing in August
1998, (ii) the Pool 4 Mortgage Loans prepay at the specified constant
percentages of the Prepayment Assumption, (iii) the aggregate outstanding
principal balance of the Pool 4 Mortgage Loans as of the
 
                                     A4-18
<PAGE>

Cut-off Date is $201,364,346, (iv) no defaults or delinquencies in the payment
by Mortgagors of principal of and interest on the Pool 4 Mortgage Loans are
experienced and the Company does not repurchase any of the Pool 4 Mortgage Loans
as permitted or required by the Agreement, (v) the Company does not exercise its
option to repurchase all the Mortgage Loans in the Trust Fund as described under
the caption 'The Pooling and Servicing Agreement--Termination' herein, (vi)
scheduled monthly payments on the Pool 4 Mortgage Loans are received on the
first day of each month commencing in August 1998, and are computed prior to
giving effect to prepayments received in the prior month, (vii) prepayments
representing payment in full of individual Pool 4 Mortgage Loans are received on
the last day of each month (commencing in July 1998) and include 30 days'
interest thereon, and no Interest Shortfalls occur in respect of the Pool 4
Mortgage Loans, (viii) the scheduled monthly payment for each Pool 4 Mortgage
Loan has been calculated based on its outstanding balance, interest rate and
remaining term to maturity such that such Mortgage Loan will amortize in amounts
sufficient to repay the remaining balance of such Mortgage Loan by its remaining
term to maturity, (ix) the initial Class Certificate Principal Balance and
Certificate Interest Rate for each Class of Pool 4 Certificates offered hereby
are as indicated on the cover page hereof, (x) the date of the initial issuance
of the Pool 4 Certificates is July 30, 1998, (xi) the amounts distributable to
Pool 4 Certificateholders are not reduced by the incurrence of any expenses by
the Pool 4 Trust Fund and (xii) the Pool 4 Mortgage Loans are divided into two
groups (each, a 'Pool 4 Mortgage Loan Group') and the Pool 4 Mortgage Loans in
each Pool 4 Mortgage Loan Group have the respective characteristics described
below (the Aggregate Scheduled Principal Balance shown below for each Pool 4
Mortgage Loan Group has been rounded to the nearest dollar and Mortgage Rates
have been rounded to eight decimal places):
 
<TABLE>
<CAPTION>
                                             AGGREGATE                                                     STATED
                                             SCHEDULED                                                    REMAINING
                                         PRINCIPAL BALANCE                        NET                      TERM TO
                                             AS OF THE          MORTGAGE        MORTGAGE        AGE       MATURITY
MORTGAGE LOAN GROUP                        CUT-OFF DATE           RATE            RATE        (MONTHS)    (MONTHS)
- -------------------                      -----------------    ------------    ------------    --------    ---------
<S>                                      <C>                  <C>             <C>             <C>         <C>
Discount..............................     $  16,867,557      6.8518590688%   6.6182652253%       1          359
Non-Discount..........................       184,496,789      7.4196539954    7.1674300130        0          359
</TABLE>

 
     It is not likely that the Pool 4 Mortgage Loans will prepay at a constant
level of the Prepayment Assumption. In addition, because certain of the Pool 4
Mortgage Loans will have remaining terms to maturity and will bear interest at
rates that are different from those assumed, the actual Class Certificate
Principal Balance of each Class of Pool 4 Certificates outstanding at any time
and the actual weighted average life of each Class of Pool 4 Certificates would
differ (which difference could be material) from the corresponding information
in the tables for each indicated percentage of the Prepayment Assumption.
Furthermore, even if all the Pool 4 Mortgage Loans prepay at the indicated
percentage of the Prepayment Assumption and the weighted average mortgage
interest rate and weighted average stated remaining term to maturity of the Pool
4 Mortgage Loans were to equal the weighted average mortgage interest rate and
weighted average stated remaining term to maturity of the assumed Pool 4
Mortgage Loans, due to the actual distribution of remaining terms to maturity
and interest rates among the Pool 4 Mortgage Loans, the actual Class Certificate
Principal Balance of each Class of Certificates outstanding at any time and the
actual weighted average life of each Class of Certificates would differ (which
difference could be material) from the corresponding information in the tables
for each indicated percentage of the Prepayment Assumption.
 
                                     A4-19

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 4 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                                         CLASS 4-A4
                                  CLASS 4-A1                      CLASS 4-A2                      CLASS 4-A3             ----------
                         ----------------------------    ----------------------------    ----------------------------
                                                                                                                         PREPAYMENT
                            PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION        ASSUMPTION
                         ----------------------------    ----------------------------    ----------------------------    ----------
DISTRIBUTION DATE         0%   200%  275%  350%  500%     0%   200%  275%  350%  500%     0%   200%  275%  350%  500%     0%   200%
- -----------------        ----  ----  ----  ----  ----    ----  ----  ----  ----  ----    ----  ----  ----  ----  ----    ----  ----
<S>                      <C>   <C>   <C>   <C>   <C>     <C>   <C>   <C>   <C>   <C>     <C>   <C>   <C>   <C>   <C>     <C>   <C>
Initial Percentage......  100  100   100   100   100      100  100   100   100   100      100  100   100   100   100      100  100
July 1999...............   99   95    93    92    89      100  100   100   100   100      100  100   100   100   100      100  100
July 2000...............   97   83    78    73    63      100  100   100   100   100      100  100   100   100   100      100  100
July 2001...............   96   67    57    48    31      100  100   100   100   100      100  100   100   100   100      100  100
July 2002...............   94   52    39    27     7      100  100   100   100   100      100  100   100   100   100      100  100
July 2003...............   92   39    24    11     0      100  100   100   100   100      100  100   100   100   100      100  100
July 2004...............   90   29    13     *     0      100  100   100   100    69      100  100   100   100    69      100   96
July 2005...............   88   20     4     0     0      100  100   100   100    21      100  100   100   100    21       99   90
July 2006...............   86   13     0     0     0      100  100   100   100     2      100  100   100   100     2       98   82
July 2007...............   84    8     0     0     0      100  100   100    84     0      100  100   100    84     0       96   73
July 2008...............   82    3     0     0     0      100  100   100    66     0      100  100   100    66     0       94   63
July 2009...............   79    0     0     0     0      100  100   100    51     0      100  100   100    51     0       92   54
July 2010...............   77    0     0     0     0      100  100    91    39     0      100  100    91    39     0       90   46
July 2011...............   74    0     0     0     0      100  100    77    30     0      100  100    77    30     0       87   40
July 2012...............   71    0     0     0     0      100  100    62    23     0      100  100    62    23     0       85   34
July 2013...............   67    0     0     0     0      100  100    50    18     0      100  100    50    18     0       82   29
July 2014...............   64    0     0     0     0      100   96    40    13     0      100   96    40    13     0       79   24
July 2015...............   60    0     0     0     0      100   85    32    10     0      100   85    32    10     0       75   21
July 2016...............   56    0     0     0     0      100   72    25     8     0      100   72    25     8     0       72   17
July 2017...............   52    0     0     0     0      100   60    20     6     0      100   60    20     6     0       68   14
July 2018...............   47    0     0     0     0      100   50    16     4     0      100   50    16     4     0       64   12
July 2019...............   42    0     0     0     0      100   40    12     3     0      100   40    12     3     0       59   10
July 2020...............   36    0     0     0     0      100   33     9     2     0      100   33     9     2     0       54    8
July 2021...............   30    0     0     0     0      100   26     7     2     0      100   26     7     2     0       49    6
July 2022...............   24    0     0     0     0      100   20     5     1     0      100   20     5     1     0       43    5
July 2023...............   17    0     0     0     0      100   15     4     1     0      100   15     4     1     0       37    4
July 2024...............    9    0     0     0     0      100   11     3     *     0      100   11     3     *     0       31    3
July 2025...............    1    0     0     0     0      100    8     2     *     0      100    8     2     *     0       24    2
July 2026...............    0    0     0     0     0      100    5     1     *     0      100    5     1     *     0       16    1
July 2027...............    0    0     0     0     0       84    2     *     *     0       84    2     *     *     0        8    *
July 2028...............    0    0     0     0     0        0    0     0     0     0        0    0     0     0     0        0    0
Weighted Average Life
 (in years)(1).......... 17.7  4.6   3.6   3.0   2.4     29.4  20.8  16.1  12.2  6.5     29.4  20.8  16.1  12.2  6.5     21.5  12.9
 
<CAPTION>
 
DISTRIBUTION DATE         275%  350%  500%
- ------------------------  ----  ----  ----
<S>                      <C>    <C>   <C>
Initial Percentage......  100   100   100
July 1999...............  100   100   100
July 2000...............  100   100   100
July 2001...............  100   100   100
July 2002...............  100   100   100
July 2003...............  100   100   100
July 2004...............   94    92    88
July 2005...............   87    83    74
July 2006...............   77    71    58
July 2007...............   65    57    39
July 2008...............   53    44    27
July 2009...............   43    34    18
July 2010...............   35    26    13
July 2011...............   29    20     9
July 2012...............   23    15     6
July 2013...............   19    12     4
July 2014...............   15     9     3
July 2015...............   12     7     2
July 2016...............   10     5     1
July 2017...............    8     4     1
July 2018...............    6     3     1
July 2019...............    5     2     *
July 2020...............    4     2     *
July 2021...............    3     1     *
July 2022...............    2     1     *
July 2023...............    1     1     *
July 2024...............    1     *     *
July 2025...............    1     *     *
July 2026...............    *     *     *
July 2027...............    *     *     *
July 2028...............    0     0     0
Weighted Average Life
 (in years)(1)..........  11.4  10.4  8.9
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A4-20

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 4 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                                         CLASS 4-A8
                                  CLASS 4-A5                      CLASS 4-A6                      CLASS 4-A7             ----------
                         ----------------------------    ----------------------------    ----------------------------
                                                                                                                         PREPAYMENT
                            PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION        ASSUMPTION
                         ----------------------------    ----------------------------    ----------------------------    ----------
DISTRIBUTION DATE         0%   200%  275%  350%  500%     0%   200%  275%  350%  500%     0%   200%  275%  350%  500%     0%   200%
- -----------------        ----  ----  ----  ----  ----    ----  ----  ----  ----  ----    ----  ----  ----  ----  ----    ----  ----
<S>                      <C>   <C>   <C>   <C>   <C>     <C>   <C>   <C>   <C>   <C>     <C>   <C>   <C>   <C>   <C>     <C>   <C>
Initial Percentage......  100  100   100   100   100      100  100   100   100   100      100  100   100   100   100      100  100
July 1999...............   99   96    94    93    91       98   93    91    89    85      100  100   100   100   100      100  100
July 2000...............   98   86    81    77    68       96   76    69    62    48      100  100   100   100   100      100  100
July 2001...............   96   72    63    55    41       94   54    40    27     3      100  100   100   100   100      100  100
July 2002...............   95   59    48    38    20       92   33    15     0     0      100  100   100    95     7      100  100
July 2003...............   93   48    35    24     6       89   15     0     0     0      100  100    82    25     0      100  100
July 2004...............   92   39    26    15     0       87    1     0     0     0      100  100    33     0     0      100  100
July 2005...............   90   32    18     8     0       84    0     0     0     0      100   65     0     0     0      100   65
July 2006...............   88   26    13     3     0       81    0     0     0     0      100   34     0     0     0      100   34
July 2007...............   86   21     9     *     0       78    0     0     0     0      100    9     0     0     0      100    9
July 2008...............   84   17     6     0     0       75    0     0     0     0      100    0     0     0     0      100    0
July 2009...............   82   13     3     0     0       71    0     0     0     0      100    0     0     0     0      100    0
July 2010...............   80   10     1     0     0       67    0     0     0     0      100    0     0     0     0      100    0
July 2011...............   78    8     0     0     0       63    0     0     0     0      100    0     0     0     0      100    0
July 2012...............   75    6     0     0     0       59    0     0     0     0      100    0     0     0     0      100    0
July 2013...............   72    4     0     0     0       55    0     0     0     0      100    0     0     0     0      100    0
July 2014...............   69    2     0     0     0       50    0     0     0     0      100    0     0     0     0      100    0
July 2015...............   66    *     0     0     0       44    0     0     0     0      100    0     0     0     0      100    0
July 2016...............   62    0     0     0     0       38    0     0     0     0      100    0     0     0     0      100    0
July 2017...............   58    0     0     0     0       32    0     0     0     0      100    0     0     0     0      100    0
July 2018...............   54    0     0     0     0       26    0     0     0     0      100    0     0     0     0      100    0
July 2019...............   50    0     0     0     0       18    0     0     0     0      100    0     0     0     0      100    0
July 2020...............   45    0     0     0     0       11    0     0     0     0      100    0     0     0     0      100    0
July 2021...............   40    0     0     0     0        2    0     0     0     0      100    0     0     0     0      100    0
July 2022...............   35    0     0     0     0        0    0     0     0     0       79    0     0     0     0       79    0
July 2023...............   29    0     0     0     0        0    0     0     0     0       49    0     0     0     0       49    0
July 2024...............   22    0     0     0     0        0    0     0     0     0       17    0     0     0     0       17    0
July 2025...............   16    0     0     0     0        0    0     0     0     0        0    0     0     0     0        0    0
July 2026...............    8    0     0     0     0        0    0     0     0     0        0    0     0     0     0        0    0
July 2027...............    *    0     0     0     0        0    0     0     0     0        0    0     0     0     0        0    0
July 2028...............    0    0     0     0     0        0    0     0     0     0        0    0     0     0     0        0    0
Weighted Average Life
 (in years)(1).......... 19.2  5.9   4.5   3.7   2.8     14.6  3.3   2.7   2.3   1.9     25.0  7.6   5.7   4.7   3.6     25.0  7.6
 
<CAPTION>
 
DISTRIBUTION DATE         275%  350%  500%
- ------------------------  ----  ----  ----
<S>                      <C>    <C>   <C>
Initial Percentage......  100   100   100
July 1999...............  100   100   100
July 2000...............  100   100   100
July 2001...............  100   100   100
July 2002...............  100    95     7
July 2003...............   82    25     0
July 2004...............   33     0     0
July 2005...............    0     0     0
July 2006...............    0     0     0
July 2007...............    0     0     0
July 2008...............    0     0     0
July 2009...............    0     0     0
July 2010...............    0     0     0
July 2011...............    0     0     0
July 2012...............    0     0     0
July 2013...............    0     0     0
July 2014...............    0     0     0
July 2015...............    0     0     0
July 2016...............    0     0     0
July 2017...............    0     0     0
July 2018...............    0     0     0
July 2019...............    0     0     0
July 2020...............    0     0     0
July 2021...............    0     0     0
July 2022...............    0     0     0
July 2023...............    0     0     0
July 2024...............    0     0     0
July 2025...............    0     0     0
July 2026...............    0     0     0
July 2027...............    0     0     0
July 2028...............    0     0     0
Weighted Average Life
 (in years)(1)..........  5.7   4.7   3.6
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A4-21

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 4 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                                           CLASS
                                                                                                                           4-A12
                                  CLASS 4-A9                     CLASS 4-A10                     CLASS 4-A11             ----------
                         ----------------------------    ----------------------------    ----------------------------
                                                                                                                         PREPAYMENT
                            PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION        ASSUMPTION
                         ----------------------------    ----------------------------    ----------------------------    ----------
DISTRIBUTION DATE         0%   200%  275%  350%  500%     0%   200%  275%  350%  500%     0%   200%  275%  350%  500%     0%   200%
- -----------------        ----  ----  ----  ----  ----    ----  ----  ----  ----  ----    ----  ----  ----  ----  ----    ----  ----
<S>                      <C>   <C>   <C>   <C>   <C>     <C>   <C>   <C>   <C>   <C>     <C>   <C>   <C>   <C>   <C>     <C>   <C>
Initial Percentage......  100  100   100   100   100      100  100   100   100   100      100  100   100   100   100      100  100
July 1999...............  100  100   100   100   100      100  100   100   100   100      100  100   100   100   100      100  100
July 2000...............  100  100   100   100   100      100  100   100   100   100      100  100   100   100   100      100  100
July 2001...............  100  100   100   100   100      100  100   100   100   100      100  100   100   100   100      100  100
July 2002...............  100  100   100   100   100      100  100   100   100   100      100  100   100   100   100      100  100
July 2003...............  100  100   100   100     0      100  100   100   100     0      100  100   100   100     0      100  100
July 2004...............  100  100   100    56     0      100  100   100   100     0      100  100   100   100     0      100  100
July 2005...............  100  100    91     0     0      100  100   100     5     0      100  100   100     5     0      100  100
July 2006...............  100  100     0     0     0      100  100    95     0     0      100  100    95     0     0      100  100
July 2007...............  100  100     0     0     0      100  100    20     0     0      100  100    20     0     0      100  100
July 2008...............  100   79     0     0     0      100  100     0     0     0      100  100     0     0     0      100  100
July 2009...............  100   23     0     0     0      100  100     0     0     0      100  100     0     0     0      100  100
July 2010...............  100    0     0     0     0      100   56     0     0     0      100   56     0     0     0      100  100
July 2011...............  100    0     0     0     0      100    8     0     0     0      100    8     0     0     0      100  100
July 2012...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100   43
July 2013...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2014...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2015...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2016...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2017...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2018...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2019...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2020...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2021...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2022...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2023...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2024...............  100    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2025...............   66    0     0     0     0      100    0     0     0     0      100    0     0     0     0      100    0
July 2026...............    0    0     0     0     0       14    0     0     0     0       14    0     0     0     0      100    0
July 2027...............    0    0     0     0     0        0    0     0     0     0        0    0     0     0     0        0    0
July 2028...............    0    0     0     0     0        0    0     0     0     0        0    0     0     0     0        0    0
Weighted Average Life
 (in years)(1) ......... 27.1  10.6  7.6   6.0   4.4     27.8  12.2  8.6   6.7   4.7     27.8  12.2  8.6   6.7   4.7     28.3  13.9
 
<CAPTION>
 
DISTRIBUTION DATE         275%  350%  500%
- ------------------------  ----  ----  ----
<S>                      <C>    <C>   <C>
Initial Percentage......  100   100   100
July 1999...............  100   100   100
July 2000...............  100   100   100
July 2001...............  100   100   100
July 2002...............  100   100   100
July 2003...............  100   100    70
July 2004...............  100   100     0
July 2005...............  100   100     0
July 2006...............  100     0     0
July 2007...............  100     0     0
July 2008...............   43     0     0
July 2009...............    0     0     0
July 2010...............    0     0     0
July 2011...............    0     0     0
July 2012...............    0     0     0
July 2013...............    0     0     0
July 2014...............    0     0     0
July 2015...............    0     0     0
July 2016...............    0     0     0
July 2017...............    0     0     0
July 2018...............    0     0     0
July 2019...............    0     0     0
July 2020...............    0     0     0
July 2021...............    0     0     0
July 2022...............    0     0     0
July 2023...............    0     0     0
July 2024...............    0     0     0
July 2025...............    0     0     0
July 2026...............    0     0     0
July 2027...............    0     0     0
July 2028...............    0     0     0
Weighted Average Life
 (in years)(1) .........  10.0  7.4   5.1
</TABLE>
 
- ------------------
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A4-22

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 4 CERTIFICATES
 

<TABLE>
<CAPTION>
                                                                                                              CLASS 4-A13
                                                                                                    --------------------------------
                                                                                                         PREPAYMENT ASSUMPTION
                                                                                                    --------------------------------
DISTRIBUTION DATE                                                                                    0%    200%   275%   350%   500%
- -----------------                                                                                   ----   ----   ----   ----   ----
<S>                                                                                                 <C>    <C>    <C>    <C>    <C>
Initial Percentage................................................................................   100   100    100    100    100
July 1999.........................................................................................   100   100    100    100    100
July 2000.........................................................................................   100   100    100    100    100
July 2001.........................................................................................   100   100    100    100    100
July 2002.........................................................................................   100   100    100    100    100
July 2003.........................................................................................   100   100    100    100    100
July 2004.........................................................................................   100   100    100    100      0
July 2005.........................................................................................   100   100    100    100      0
July 2006.........................................................................................   100   100    100     46      0
July 2007.........................................................................................   100   100    100      0      0
July 2008.........................................................................................   100   100    100      0      0
July 2009.........................................................................................   100   100     44      0      0
July 2010.........................................................................................   100   100      0      0      0
July 2011.........................................................................................   100   100      0      0      0
July 2012.........................................................................................   100   100      0      0      0
July 2013.........................................................................................   100    68      0      0      0
July 2014.........................................................................................   100     0      0      0      0
July 2015.........................................................................................   100     0      0      0      0
July 2016.........................................................................................   100     0      0      0      0
July 2017.........................................................................................   100     0      0      0      0
July 2018.........................................................................................   100     0      0      0      0
July 2019.........................................................................................   100     0      0      0      0
July 2020.........................................................................................   100     0      0      0      0
July 2021.........................................................................................   100     0      0      0      0
July 2022.........................................................................................   100     0      0      0      0
July 2023.........................................................................................   100     0      0      0      0
July 2024.........................................................................................   100     0      0      0      0
July 2025.........................................................................................   100     0      0      0      0
July 2026.........................................................................................   100     0      0      0      0
July 2027.........................................................................................     0     0      0      0      0
July 2028.........................................................................................     0     0      0      0      0
Weighted average life
  (in years)(1):..................................................................................  28.7   15.2   11.0   8.0    5.4
</TABLE>
 
- ------------------
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A4-23

<PAGE>

            PERCENT OF ORIGINAL CLASS CERTIFICATE PRINCIPAL BALANCE
                     OUTSTANDING OF THE POOL 4 CERTIFICATES

<TABLE>
<CAPTION>
                                                                                                            CLASS 4-M,CLASS 4-B1
                                                                                  CLASS 4-R                    AND CLASS 4-B2
                                                                       --------------------------------   -------------------------
                                                                            PREPAYMENT ASSUMPTION           PREPAYMENT ASSUMPTION
                                                                       --------------------------------   -------------------------
DISTRIBUTION DATE                                                       0%    200%   275%   350%   500%    0%    200%   275%   350%
- -----------------                                                      ----   ----   ----   ----   ----   ----   ----   ----   ----
<S>                                                                    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>    <C>
Initial Percentage...................................................   100   100    100    100    100     100   100    100    100
July 1999............................................................     0     0      0      0      0      99    99     99     99
July 2000............................................................     0     0      0      0      0      98    98     98     98
July 2001............................................................     0     0      0      0      0      97    97     97     97
July 2002............................................................     0     0      0      0      0      96    96     96     96
July 2003............................................................     0     0      0      0      0      94    94     94     94
July 2004............................................................     0     0      0      0      0      93    90     88     87
July 2005............................................................     0     0      0      0      0      92    84     81     78
July 2006............................................................     0     0      0      0      0      90    76     71     66
July 2007............................................................     0     0      0      0      0      88    68     61     54
July 2008............................................................     0     0      0      0      0      86    58     49     42
July 2009............................................................     0     0      0      0      0      84    50     40     32
July 2010............................................................     0     0      0      0      0      82    43     33     25
July 2011............................................................     0     0      0      0      0      80    37     27     19
July 2012............................................................     0     0      0      0      0      78    31     22     15
July 2013............................................................     0     0      0      0      0      75    27     17     11
July 2014............................................................     0     0      0      0      0      72    23     14      8
July 2015............................................................     0     0      0      0      0      69    19     11      6
July 2016............................................................     0     0      0      0      0      66    16      9      5
July 2017............................................................     0     0      0      0      0      62    13      7      4
July 2018............................................................     0     0      0      0      0      58    11      5      3
July 2019............................................................     0     0      0      0      0      54     9      4      2
July 2020............................................................     0     0      0      0      0      50     7      3      1
July 2021............................................................     0     0      0      0      0      45     6      2      1
July 2022............................................................     0     0      0      0      0      40     4      2      1
July 2023............................................................     0     0      0      0      0      34     3      1      *
July 2024............................................................     0     0      0      0      0      28     2      1      *
July 2025............................................................     0     0      0      0      0      22     2      1      *
July 2026............................................................     0     0      0      0      0      15     1      *      *
July 2027............................................................     0     0      0      0      0       7     *      *      *
July 2028............................................................     0     0      0      0      0       0     0      0      0
Weighted Average Life
  (in years)(1)......................................................   0.1   0.1    0.1    0.1    0.1    20.1   12.2   10.9   10.0
 
<CAPTION>
 
DISTRIBUTION DATE                                                      500%
- ---------------------------------------------------------------------  ----
<S>                                                                    <C>
Initial Percentage...................................................  100
July 1999............................................................   99
July 2000............................................................   98
July 2001............................................................   97
July 2002............................................................   96
July 2003............................................................   94
July 2004............................................................   84
July 2005............................................................   72
July 2006............................................................   57
July 2007............................................................   42
July 2008............................................................   29
July 2009............................................................   20
July 2010............................................................   13
July 2011............................................................    9
July 2012............................................................    6
July 2013............................................................    4
July 2014............................................................    3
July 2015............................................................    2
July 2016............................................................    1
July 2017............................................................    1
July 2018............................................................    1
July 2019............................................................    *
July 2020............................................................    *
July 2021............................................................    *
July 2022............................................................    *
July 2023............................................................    *
July 2024............................................................    *
July 2025............................................................    *
July 2026............................................................    *
July 2027............................................................    *
July 2028............................................................    0
Weighted Average Life
  (in years)(1)......................................................  8.8
</TABLE>
 
- ------------------
 * Indicates an amount above zero and less than 0.5% of the original Class
   Certificate Principal Balance is outstanding.
 
(1) The weighted average life of a Certificate is determined by (a) multiplying
    the reduction, if any, in the Certificate Principal Balance thereof on each
    Distribution Date by the number of years from the date of issuance to such
    Distribution Date, (b) summing the results and (c) dividing the sum by the
    aggregate reductions in the Certificate Principal Balance of such
    Certificate.
 
                                     A4-24

<PAGE>

               INDEX OF CERTAIN PROSPECTUS SUPPLEMENT DEFINITIONS
 
<TABLE>
<CAPTION>
DEFINED TERM                                                                                 PAGE
- ------------                                                                                 ----            
<S>                                                                               <C>
Accretion Directed Certificates..................................................                        A2-6
Accretion Termination Date.......................................................                        A2-6
Accrual Amount...................................................................                  A1-6, A2-5
Accrued Certificate Interest..................................................... S-9, A1-7, A2-6, A3-4, A4-5
Agreement........................................................................                         S-7
Allocable Share..................................................................   A1-13, A2-12, A3-9, A4-10
Annex............................................................................                        S-27
Available Funds..................................................................                        S-30
Bankruptcy Coverage Termination Date.............................................      A1-8, A2-6, A3-6, A4-7
Bankruptcy Loss..................................................................  A1-14, A2-12, A3-10, A4-11
Bankruptcy Loss Amount...........................................................  S-27, A1-15, A2-14, A3-11,
                                                                                                        A4-12
Base Servicing Fee...............................................................                        S-38
Base Servicing Fee Rate..........................................................                        S-38
beneficial owner.................................................................                        S-29
BIF..............................................................................                        S-36
Book-Entry Certificates..........................................................                        S-29
British Bankers Association Interest Settlement Rate.............................            Cover Page, A1-9
Bulletin Board...................................................................                        S-26
Cede.............................................................................                        S-29
Certificate Group................................................................                         S-3
Certificate Principal Balance....................................................      A1-7, A2-6, A3-5, A4-5
Certificates.....................................................................                  Cover Page
Class............................................................................                         S-3
Class 1-A10 Accretion Termination Date...........................................                        A1-5
Class 1-A10 Accrual Amount.......................................................                        A1-7
Class 1-A14 Accretion Termination Date...........................................                        A1-6
Class 1-A14 Accrual Amount.......................................................                        A1-7
Class 1-B Certificates...........................................................                         S-4
Class 1-PO Deferred Amount.......................................................                 S-11, A1-14
Class 1-PO Deferred Payment Writedown Amount.....................................                        A1-8
Class 1-PO Principal Distribution Amount.........................................                       A1-12
Class 2-A9 Distribution Percentage...............................................                 S-26, A2-10
Class 2-A9 Percentage............................................................                       A2-10
Class 2-A9 Principal Distribution Amount.........................................                       A2-10
Class 2-A9 Scheduled Distribution Percentage.....................................                       A2-10
Class 2-B Certificates...........................................................                         S-4
Class 2-PO Deferred Amount.......................................................                 S-12, A2-12
Class 2-PO Deferred Payment Writedown Amount.....................................                        A2-6
Class 2-PO Principal Distribution Amount.........................................                       A2-10
Class 3-A3 Percentage............................................................                        A3-7
Class 3-A3 Prepayment Distribution Percentage....................................                        A3-7
Class 3-A3 Principal Distribution Amount.........................................                        A3-7
Class 3-B Certificates...........................................................                         S-5
Class 3-PO Deferred Amount.......................................................                 S-14, A3-10
Class 3-PO Deferred Payment Writedown Amount.....................................                        A3-5
Class 3-PO Principal Distribution Amount.........................................                        A3-8
Class 4-A4 Distribution Percentage...............................................                        A4-8
Class 4-A4 Percentage............................................................                        A4-8
Class 4-A4 Principal Distribution Amount.........................................                        A4-8
Class 4-B Certificates...........................................................                         S-5
Class 4-PO Deferred Amount.......................................................                 S-15, A4-11
Class 4-PO Deferred Payment Writedown Amount.....................................                        A4-5
</TABLE>
 
                                      B-1
<PAGE>

<TABLE>
<CAPTION>
DEFINED TERM                                                                                 PAGE
- ------------                                                                                -----            
<S>                                                                               <C>
Class 4-PO Principal Distribution Amount.........................................                        A4-9
Class B Certificates.............................................................                         S-5
Class Certificate Principal Balance..............................................                         S-3
Class PO Certificate.............................................................                         S-6
Class PO Deferred Amount.........................................................                        S-15
Class PO Deferred Payment Writedown Amounts......................................                         S-8
Class Prepayment Distribution Trigger............................................   A1-13, A2-12, A3-9, A4-10
Code.............................................................................                        S-25
Collection Account...............................................................                        S-36
Company..........................................................................                  Cover Page
Compensating Interest Payment....................................................                        S-38
CSFB.............................................................................                  Cover Page
CSFB Exemption...................................................................                        S-41
Dealer...........................................................................                        S-26
Debt Service Reduction...........................................................  A1-13, A2-12, A3-10, A4-11
Defaulted Mortgage Loan..........................................................                        S-37
Deficient Valuation..............................................................  A1-13, A2-12, A3-10, A4-11
Definitive Certificate...........................................................                        S-29
Depository.......................................................................                         S-6
Depository.......................................................................                        S-29
Detailed Description.............................................................                        S-27
Distribution Date................................................................                         S-7
DOL..............................................................................                        S-41
Effective Range..................................................................                       A2-21
ERISA............................................................................                        S-24
ERISA Plan.......................................................................                        S-40
Excess Loss......................................................................  A1-14, A2-12, A3-10, A4-11
Exemptions.......................................................................                        S-41
FDIC.............................................................................                        S-36
Financial Intermediary...........................................................                        S-29
Fitch............................................................................                        S-25
Floating Rate Certificates.......................................................                         S-8
Fraud Loss.......................................................................  A1-14, A2-12, A3-10, A4-11
GE Capital.......................................................................                        S-35
Greenwich Capital................................................................                  Cover Page
Greenwich Capital Exemption......................................................                        S-41
Group I Senior Certificates......................................................      S-18, A2-3, A3-3, A4-3
Interest Accrual Period.......................................................... S-9, A1-6, A2-5, A3-5, A4-6
Interest Shortfall...............................................................      A1-8, A2-7, A3-5, A4-6
Junior Certificates..............................................................                         S-5
Junior Principal Balance.........................................................                        A2-9
Lehman...........................................................................                  Cover Page
Lehman Exemption.................................................................                        S-41
LIBOR............................................................................            A1-9, A2-7, A4-6
LIBOR Determination Date.........................................................            A1-9, A2-7, A4-6
Liquidated Mortgage Loan.........................................................  A1-13, A2-12, A3-10, A4-11
London Banking Day...............................................................            A1-9, A2-7, A4-6
Loss Allocation Limitation.......................................................                       A2-13
Mortgage.........................................................................                        S-27
Mortgage Loans...................................................................                  Cover Page
Mortgage Pool....................................................................                  Cover Page
Mortgage Rates...................................................................                        S-27
Mortgage Related Securities......................................................                        S-24
Mortgaged Properties.............................................................                         S-7
Mortgagor........................................................................                        S-15
</TABLE>
 
                                      B-2
<PAGE>

<TABLE>
<CAPTION>
DEFINED TERM                                                                                 PAGE
- ------------                                                                                 ----            
<S>                                                                               <C>
Net Interest Shortfall...........................................................      A1-8, A2-7, A3-5, A4-6
Net Mortgage Rate................................................................                        A1-8
NMR..............................................................................     A1-10, A2-8, A3-5, A4-7
Non-Book-Entry Certificates......................................................                        S-30
Non-Credit Loss..................................................................                        S-30
Non-PO Percentage................................................................     A1-10, A2-8, A3-5, A4-7
Non-SMMEA Certificates...........................................................                        S-42
Nonrecoverable Advance...........................................................                        S-37
Notional Principal Balance.......................................................             S-9, A1-8, A2-6
Original Pool 1 Junior Principal Balance.........................................                       A1-11
Original Pool 2 Junior Principal Balance.........................................                        A2-9
Original Pool 3 Junior Principal Balance.........................................                        A3-8
Outstanding Mortgage Loan........................................................                        S-28
Participant......................................................................                        S-29
PO Percentage....................................................................     A1-10, A2-8, A3-6, A4-7
Pool 1...........................................................................                  Cover Page
Pool 1 Adjustment Amount.........................................................                       A1-16
Pool 1 Available Funds...........................................................                        S-30
Pool 1 Bankruptcy Coverage Termination Date......................................                       A1-15
Pool 1 Bankruptcy Loss Amount....................................................                       A1-15
Pool 1 Certificates..............................................................                  Cover Page
Pool 1 Cross-Over Date...........................................................                        A1-5
Pool 1 Discount Mortgage Loan....................................................                       A1-10
Pool 1 Fraud Coverage Termination Date...........................................                       A1-15
Pool 1 Fraud Loss Amount.........................................................                       A1-15
Pool 1 Junior Certificate Writedown Amount.......................................                        A1-8
Pool 1 Junior Certificates.......................................................                         S-3
Pool 1 Junior Optimal Principal Amount...........................................                       A1-12
Pool 1 Junior Percentage.........................................................                       A1-12
Pool 1 Junior Prepayment Percentage..............................................                       A1-12
Pool 1 Loss Allocation Limitation................................................                       A1-14
Pool 1 Lower-Tier REMIC..........................................................                         S-2
Pool 1 Modeling Assumptions......................................................                       A1-25
Pool 1 Mortgage Loan Group.......................................................                       A1-25
Pool 1 Mortgage Loans............................................................                        S-27
Pool 1 Non-Discount Mortgage Loan................................................                       A1-10
Pool 1 PAC Certificates..........................................................                        S-10
Pool 1 PAC Certificates..........................................................                        A1-3
Pool 1 PAC Structuring Range.....................................................                       A1-22
Pool 1 Scheduled Certificates....................................................                 S-10, A1-23
Pool 1 Senior Certificates.......................................................                         S-3
Pool 1 Senior Final Distribution Date............................................                       A1-12
Pool 1 Senior Optimal Principal Amount...........................................                       A1-10
Pool 1 Senior Percentage.........................................................                       A1-11
Pool 1 Senior Prepayment Percentage..............................................                       A1-11
Pool 1 Senior Prepayment Percentage Stepdown Limitation..........................                       A1-11
Pool 1 Special Hazard Loss Amount................................................                       A1-16
Pool 1 Special Hazard Termination Date...........................................                       A1-16
Pool 1 Support Certificates......................................................                 S-11, A1-24
Pool 1 TAC Certificates..........................................................                 S-10, A1-23
Pool 1 TAC Prepayment Assumption.................................................                       A1-39
Pool 1 Upper-Tier REMIC..........................................................                         S-2
Pool 2...........................................................................                  Cover Page
Pool 2 Accrual Amount............................................................                        A2-5
Pool 2 Adjustment Amount.........................................................                       A2-14
</TABLE>
 
                                      B-3
<PAGE>

<TABLE>
<CAPTION>
DEFINED TERM                                                                                 PAGE
- ------------                                                                                 ----            
<S>                                                                               <C>
Pool 2 Available Funds...........................................................                        S-30
Pool 2 Bankruptcy Coverage Termination Date......................................                       A2-14
Pool 2 Bankruptcy Loss Amount....................................................                       A2-14
Pool 2 Certificates..............................................................                  Cover Page
Pool 2 Cross-Over Date...........................................................                        A2-4
Pool 2 Discount Mortgage Loan....................................................                        A2-8
Pool 2 Fraud Coverage Termination Date...........................................                       A2-14
Pool 2 Fraud Loss Amount.........................................................                       A2-14
Pool 2 Group I Final Distribution Date...........................................                       A2-11
Pool 2 Group I Senior Certificates...............................................                        S-18
Pool 2 Group I Senior Certificates...............................................                        A2-3
Pool 2 Group II Senior Certificates..............................................                        S-18
Pool 2 Group II Senior Certificates..............................................                        A2-3
Pool 2 Junior Certificate Writedown Amount.......................................                        A2-6
Pool 2 Junior Certificates.......................................................                         S-4
Pool 2 Junior Optimal Principal Amount...........................................                       A2-11
Pool 2 Junior Percentage.........................................................                       A2-11
Pool 2 Junior Prepayment Percentage..............................................                       A2-11
Pool 2 Loss Allocation Limitation................................................                       A2-13
Pool 2 Lower-Tier REMIC..........................................................                         S-2
Pool 2 Modeling Assumptions......................................................                       A2-23
Pool 2 Mortgage Loans............................................................                        S-27
Pool 2 Non-Discount Mortgage Loan................................................                        A2-8
Pool 2 PAC Certificates..........................................................                 S-12, A2-21
Pool 2 Senior Certificates.......................................................                         S-4
Pool 2 Senior Final Distribution Date............................................                       A2-11
Pool 2 Senior Optimal Principal Amount...........................................                        A2-8
Pool 2 Senior Percentage.........................................................                        A2-9
Pool 2 Senior Prepayment Percentage..............................................                        A2-9
Pool 2 Senior Prepayment Percentage Stepdown Limitation..........................                        A2-9
Pool 2 Special Hazard Loss Amount................................................                       A2-14
Pool 2 Special Hazard Termination Date...........................................                       A2-14
Pool 2 Support Certificates......................................................                       A2-22
Pool 2 TAC Certificates..........................................................                 S-12, A2-22
Pool 2 TAC Prepayment Assumption.................................................                       A2-31
Pool 2 Upper-Tier REMIC..........................................................                         S-2
Pool 3...........................................................................                  Cover Page
Pool 3 Adjustment Amount.........................................................                       A3-12
Pool 3 Available Funds...........................................................                        S-30
Pool 3 Bankruptcy Coverage Termination Date......................................                       A3-11
Pool 3 Bankruptcy Loss Amount....................................................                       A3-11
Pool 3 Certificates..............................................................                  Cover Page
Pool 3 Cross-Over Date...........................................................                        A3-4
Pool 3 Discount Mortgage Loan....................................................                        A3-5
Pool 3 Fraud Coverage Termination Date...........................................                       A3-11
Pool 3 Fraud Loss Amount.........................................................                       A3-11
Pool 3 Junior Certificate Writedown Amount.......................................                        A3-5
Pool 3 Junior Certificates.......................................................                         S-5
Pool 3 Junior Optimal Principal Amount...........................................                        A3-8
Pool 3 Junior Percentage.........................................................                        A3-8
Pool 3 Junior Prepayment Percentage..............................................                        A3-8
Pool 3 Loss Allocation Limitation................................................                       A3-10
Pool 3 Modeling Assumptions......................................................                       A3-16
Pool 3 Mortgage Loans............................................................                        S-27
Pool 3 Non-Discount Mortgage Loan................................................                        A3-6
</TABLE>
 
                                      B-4
<PAGE>

<TABLE>
<CAPTION>
DEFINED TERM                                                                                 PAGE
- ------------                                                                                 ----            
<S>                                                                               <C>
Pool 3 REMIC.....................................................................                         S-2
Pool 3 Senior Certificates.......................................................                         S-5
Pool 3 Senior Final Distribution Date............................................                        A3-8
Pool 3 Senior Optimal Principal Amount...........................................                        A3-6
Pool 3 Senior Percentage.........................................................                        A3-7
Pool 3 Senior Prepayment Percentage..............................................                        A3-7
Pool 3 Senior Prepayment Percentage Stepdown Limitation..........................                        A3-7
Pool 3 Special Hazard Loss Amount................................................                       A3-12
Pool 3 Special Hazard Termination Date...........................................                       A3-12
Pool 4...........................................................................                  Cover Page
Pool 4 Available Funds...........................................................                        S-30
Pool 4 Bankruptcy Coverage Termination Date......................................                       A4-12
Pool 4 Bankruptcy Loss Amount....................................................                       A4-12
Pool 4 Certificates..............................................................                  Cover Page
Pool 4 Cross-Over Date...........................................................                        A4-4
Pool 4 Discount Mortgage Loan....................................................                        A4-7
Pool 4 Fraud Coverage Termination Date...........................................                       A4-12
Pool 4 Fraud Loss Amount.........................................................                       A4-12
Pool 4 Group I Senior Certificates...............................................                  S-19, A4-3
Pool 4 Group II Senior Certificates..............................................                  S-19, A4-3
Pool 4 Junior Certificate Writedown Amount.......................................                        A4-5
Pool 4 Junior Certificates.......................................................                         S-5
Pool 4 Junior Optimal Principal Amount...........................................                       A4-10
Pool 4 Junior Percentage.........................................................                       A4-10
Pool 4 Junior Prepayment Percentage..............................................                       A4-10
Pool 4 Loss Allocation Limitation................................................                       A4-12
Pool 4 Modeling Assumptions......................................................                       A4-18
Pool 4 Mortage Loans.............................................................                   S-7, A4-1
Pool 4 Non-Discount Mortgage Loan................................................                        A4-7
Pool 4 REMIC.....................................................................                         S-2
Pool 4 Senior Certificates.......................................................                         S-5
Pool 4 Senior Final Distribution Date............................................                       A4-10
Pool 4 Senior Optimal Principal Amount...........................................                        A4-7
Pool 4 Senior Percentage.........................................................                        A4-8
Pool 4 Senior Prepayment Percentage..............................................                        A4-8
Pool 4 Senior Prepayment Percentage Stepdown Limitation..........................                        A4-9
Pool 4 Special Hazard Loss Amount................................................                       A4-13
Pool 4 Special Hazard Termination Date...........................................                       A4-13
Pool Scheduled Principal Balance.................................................                  S-27, S-27
Prepayment Assumption............................................................  A1-22, A2-21, A3-15, A4-18
Prepayment Interest..............................................................  A1-18, A2-17, A3-14, A4-15
Prepayment Period................................................................     A1-11, A2-9, A3-7, A4-8
Primary Mortgage Insurance Policy................................................                        S-35
Realized Loss....................................................................  A1-13, A2-12, A3-10, A4-11
Record Date......................................................................                         S-7
Regular Certificates.............................................................                         S-2
Regular Interests................................................................                        S-40
REMIC............................................................................                         S-2
Residual Certificates............................................................                  Cover Page
Residual Interest................................................................                        S-40
Restricted Group.................................................................                        S-41
S&P..............................................................................                        S-25
SAIF.............................................................................                        S-36
Scheduled Principal Balance......................................................                        S-27
Senior Certificates..............................................................                         S-5
</TABLE>
 
                                      B-5
<PAGE>

<TABLE>
<CAPTION>
DEFINED TERM                                                                                 PAGE
- ------------                                                                                 ----              
<S>                                                                               <C>
Servicing Fee....................................................................                        S-38
Servicing Portfolio..............................................................                        S-33
SMMEA............................................................................                        S-24
Special Hazard Loss..............................................................  A1-14, A2-12, A3-10, A4-11
Special Hazard Loss Amount.......................................................  A1-16, A2-14, A3-12, A4-13
Structuring Range................................................................                       A2-21
Supplemental Servicing Fee.......................................................                        S-38
TAC Prepayment Assumption........................................................                       A2-31
Targeted Range...................................................................                       A1-23
Tax-Exempt Investor..............................................................                        S-42
Trigger Event....................................................................                        S-36
Trust Fund.......................................................................                  Cover Page
Trustee..........................................................................                         S-7
Underwriters.....................................................................                  Cover Page
</TABLE>
 
                                      B-6

<PAGE>

PROSPECTUS

                 PASS-THROUGH CERTIFICATES (ISSUABLE IN SERIES)
 
Seller and Servicer:
GE Capital Mortgage Services, Inc.
 
     Each Certificate offered hereby will evidence a beneficial ownership
interest in one of a number of trust funds (each, a 'Trust Fund') created by GE
Capital Mortgage Services, Inc. (the 'Company') from time to time. As specified
in the related Prospectus Supplement, the assets of a Trust Fund may consist of
(i) a pool of mortgage loans secured by first liens, or a combination of first
and second liens, on one- to four-family residential properties or participation
interests in such loans (the 'Mortgage Loans') originated or acquired by the
Company, (ii) mortgage pass-through securities (the 'Agency Securities') issued
or guaranteed by the Government National Mortgage Association ('GNMA'), the
Federal National Mortgage Association ('FNMA') or the Federal Home Loan Mortgage
Corporation ('FHLMC') or (iii) conditional sales contracts and installment sales
or loan agreements or participation interests therein secured by manufactured
housing (the 'Contracts'). If specified in the related Prospectus Supplement, a
Trust Fund may also include one or more of the following: reinvestment income,
reserve accounts and insurance, guarantees or similar instruments or agreements.
 
     The Certificates may be sold from time to time in one or more series on
terms determined at the time of sale and specified in the Prospectus Supplement
relating to such series. Each series of Certificates will be issued in a single
class or in two or more classes. The Certificates of each class will evidence
the beneficial ownership of (i) any distributions in respect of the assets of
the related Trust Fund that are allocable to principal of the Certificates in
the amount of the aggregate original principal balance, if any, of such class of
Certificates as specified in the related Prospectus Supplement and (ii) any
distributions in respect of the assets of the related Trust Fund that are
allocable to interest on the principal balance or notional principal balance of
such Certificates at the interest rate, if any, applicable to such class of
Certificates as specified in the related Prospectus Supplement. One or more
classes of each series (i) may be entitled to receive distributions allocable to
principal, principal prepayments, interest or any combination thereof prior to
one or more other classes of Certificates of such series or after the occurrence
of certain events and (ii) may be subordinated in the right to receive such
distributions on such Certificates to one or more senior classes of
Certificates, in each case as specified in the related Prospectus Supplement.
Interest on each class of Certificates entitled to distributions allocable to
interest will accrue at a fixed rate or at a rate that is subject to change from
time to time as specified in the related Prospectus Supplement on an actual or
notional principal amount, may represent a specified portion of interest
received on some or all of the assets of the related Trust Fund or may otherwise
be determined as specified in the related Prospectus Supplement. The Company may
retain or hold for sale from time to time one or more classes of a series of
Certificates.
 
     Distributions on the Certificates of a series will be made only from the
proceeds from the assets of the related Trust Fund. The Certificates of any
series will not be insured or guaranteed by any governmental entity or by any
other person. Unless otherwise specified in the related Prospectus Supplement,
the Company's only obligations with respect to a series of Certificates will
consist of its contractual servicing obligations, including any obligation it
may have to advance delinquent payments on the Mortgage Loans or Contracts
included in the related Trust Fund, and its obligations pursuant to certain
representations and warranties made by it. Unless otherwise specified in the
Prospectus Supplement relating to a series, none of General Electric Company,
General Electric Capital Corporation, GE Capital Mortgage Corporation, General
Electric Mortgage Insurance Corporation or any other affiliate of the Company
will have any obligations with respect to the Certificates or the related Trust
Fund.
 
     The yield on each class of Certificates of a series will be affected by the
rate of payment of principal (including prepayments) on the assets in the
related Trust Fund and the timing of receipt of such payments as described
herein and in the related Prospectus Supplement. Each series of Certificates may
be subject to early termination only under the circumstances described herein
and in the related Prospectus Supplement.
 
     If specified in a Prospectus Supplement, an election will be made to treat
the related Trust Fund as a 'real estate mortgage investment conduit' ('REMIC')
for federal income tax purposes, or two REMIC elections may be made with respect
to the related Trust Fund. See 'Certain Federal Income Tax Consequences'.
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
   EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
     SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
       PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
             REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
 
     Offers of the Certificates may be made through one or more different
methods, including offerings through underwriters, as more fully described under
'Plan of Distribution' herein and in the related Prospectus Supplement.
 
     There will have been no public market for any series of Certificates prior
to the offering thereof. There can be no assurance that a secondary market will
develop for the Certificates of any series or, if it does develop, that such
market will continue.
 
     Retain this Prospectus for future reference. This Prospectus may not be
used to consummate sales of Certificates unless accompanied by a Prospectus
Supplement.
 
                  THE DATE OF THIS PROSPECTUS IS MAY 26, 1998.

<PAGE>

                             PROSPECTUS SUPPLEMENT
 
     The Prospectus Supplement relating to a series of Certificates being
offered hereby will, among other things, set forth with respect to such series
of Certificates (i) information as to the assets comprising the Trust Fund,
including the characteristics of the Mortgage Loans, Agency Securities or
Contracts included therein and, if applicable, the insurance, guarantees or
other instruments or agreements included in the Trust Fund and the amount and
source of any reserve accounts; (ii) the aggregate original principal balance of
each class of Certificates entitled to distributions allocable to principal and,
if a fixed rate of interest, the interest rate for each class of such
Certificates entitled to distributions allocable to interest; (iii) information
as to any class of Certificates that has a rate of interest that is subject to
change from time to time and the basis on which such interest rate will be
determined; (iv) information as to any class of Certificates on which interest
will accrue and be added to the principal or, if applicable, the notional
principal balance thereof; (v) information as to the method used to calculate
the amount of interest to be paid on any class entitled to distributions of
interest only; (vi) information as to the nature and extent of subordination
with respect to any class of Certificates that is subordinate in right of
payment to any other class; (vii) the circumstances, if any, under which the
Trust Fund is subject to early termination; (viii) if applicable, the final
distribution date and the first mandatory principal distribution date of each
class of such Certificates; (ix) the method used to calculate the aggregate
amounts of principal and interest required to be distributed on each
distribution date in respect of each class of such Certificates and, with
respect to any series consisting of more than one class, the basis on which such
amounts will be allocated among the classes of such series; (x) the distribution
date for each class of the Certificates, the date on which payments received in
respect of the assets included in the Trust Fund during the related period will
be deposited in the certificate account and, if applicable, the assumed
reinvestment rate applicable to payments received in respect of such assets and
the date on which such payments are assumed to be received for such series of
Certificates; (xi) the name of the trustee of the Trust Fund; (xii) information
with respect to the administrator, if any, of the Trust Fund; (xiii) whether an
election will be made to treat all or a portion of the Trust Fund as a REMIC or
whether two REMIC elections will be made with respect to the Trust Fund and, if
such election is made, the designation of the regular interests and residual
interests therein; and (xiv) information with respect to the plan of
distribution of such Certificates.
 
                             AVAILABLE INFORMATION
 
     The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the 'Exchange Act') with respect to the series
of Certificates offered hereby and by the related Prospectus Supplement, and in
accordance therewith files reports and other information with the Securities and
Exchange Commission (the 'Commission'). Such reports and other information can
be inspected and copied at the public reference facilities maintained by the
Commission at Room 1024, 450 Fifth Street, N.W., Washington, D.C. 20549, and at
the Commission's Regional Offices at Seven World Trade Center, Suite 1300, New
York, New York 10048, and 500 West Madison Street, Suite 1400, Chicago, Illinois
60661. Copies of such material can be obtained upon written request addressed to
the Commission, Public Reference Section, 450 Fifth Street, N.W., Washington,
D.C. 20549, at prescribed rates.
 
     The Company has filed with the Commission a Registration Statement under
the Securities Act of 1933, as amended, with respect to the Certificates. This
Prospectus, which forms a part of the Registration Statement, omits certain
information contained in such Registration Statement pursuant to the rules and
regulations of the Commission. The Registration Statement can be inspected and
copied at prescribed rates at the public reference facilities maintained by the
Commission as described in the preceding paragraph.
 
     The Commission maintains a Web site at http://www.sec.gov containing
reports, proxy and information statements and other information regarding
registrants that file electronically with the Commission, including the Company.
 
                                       2

<PAGE>

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     All documents filed by the Company pursuant to Section 13(a), 13(c), 14 or
15(d) of the Exchange Act with respect to a series of Certificates prior to the
termination of the offering of such series of Certificates shall be deemed to be
incorporated by reference in this Prospectus as supplemented by the related
Prospectus Supplement. If so specified in any such document, such document shall
also be deemed to be incorporated by reference in the Registration Statement of
which this Prospectus forms a part.
 
     Any statement contained herein or in a Prospectus Supplement for a series
of Certificates or in a document incorporated or deemed to be incorporated by
reference herein or therein shall be deemed to be modified or superseded for
purposes of this Prospectus and such Prospectus Supplement and, if applicable,
the Registration Statement to the extent that a statement contained herein or
therein or in any subsequently filed document which also is or is deemed to be
incorporated by reference herein or therein modifies or supersedes such
statement, except to the extent that such subsequently filed document expressly
states otherwise. Any such statement so modified or superseded shall not be
deemed, except as so modified or superseded, to constitute a part of this
Prospectus or the related Prospectus Supplement or, if applicable, the
Registration Statement.
 
     The Company will provide without charge to each person, including any
beneficial owner, to whom a copy of this Prospectus and the related Prospectus
Supplement is delivered, on the written or oral request of any such person, a
copy of any and all of the documents incorporated herein by reference, except
the exhibits to such documents (unless such exhibits are specifically
incorporated by reference in such documents). Written requests for such copies
should be directed to the Corporate Secretary, GE Capital Mortgage Services,
Inc., Three Executive Campus, Cherry Hill, N.J. 08002. Telephone requests for
such copies should be directed to the Corporate Secretary at (609) 661-6512.
 
     Until 90 days after the date of each Prospectus Supplement, all dealers
effecting transactions in the series of Certificates covered by such Prospectus
Supplement, whether or not participating in the distribution thereof, may be
required to deliver such Prospectus Supplement and this Prospectus. This is in
addition to the obligation of dealers to deliver a Prospectus Supplement and
Prospectus when acting as underwriters of the series of Certificates covered by
such Prospectus Supplement and with respect to their unsold allotments or
subscriptions.
 
     No person has been authorized to give any information or to make any
representations other than those contained in this Prospectus and any Prospectus
Supplement with respect hereto and, if given or made, such information or
representations must not be relied upon as having been authorized. This
Prospectus and any Prospectus Supplement with respect hereto do not constitute
an offer to sell or a solicitation of an offer to buy any securities other than
the Certificates offered hereby and thereby nor an offer to sell or a
solicitation of an offer to buy the Certificates to any person in any state or
other jurisdiction in which such offer or solicitation would be unlawful.
Neither the delivery of this Prospectus or any Prospectus Supplement with
respect hereto nor any sale made hereunder and thereunder shall, under any
circumstances, create any implication that the information herein or therein is
correct as of any time subsequent to the date of such information.
 
                         REPORTS TO CERTIFICATEHOLDERS
 
     The Company will provide to Certificateholders, annually and with respect
to each Distribution Date, reports concerning the Trust Fund related to such
Certificates. See 'The Pooling and Servicing Agreement-- Reports to
Certificateholders'.
 
                                       3

<PAGE>

                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                                                              PAGE
                                                                                                              ----
<S>                                                                                                           <C>
Prospectus Supplement......................................................................................     2
Available Information......................................................................................     2
Incorporation of Certain Documents by Reference............................................................     3
Reports to Certificateholders..............................................................................     3
Prospectus Summary.........................................................................................     6
Description of the Certificates............................................................................    14
  General..................................................................................................    14
  Classes of Certificates..................................................................................    15
  Distributions of Principal and Interest..................................................................    16
  Example of Distributions.................................................................................    17
  Optional Termination of the Trust Fund...................................................................    18
The Trust Fund.............................................................................................    19
  The Mortgage Loans.......................................................................................    19
  The Agency Securities....................................................................................    26
  Contracts................................................................................................    29
Credit Support.............................................................................................    30
  General..................................................................................................    30
  Purchase of Liquidating Loans............................................................................    31
  Limited Guarantee of the Guarantor.......................................................................    31
  Subordination............................................................................................    32
  Cross-Support............................................................................................    33
  Pool Insurance...........................................................................................    33
  Special Hazard Insurance.................................................................................    34
  Bankruptcy Bond..........................................................................................    35
  Repurchase Bond..........................................................................................    35
  Guaranteed Investment Contracts..........................................................................    35
  Reserve Accounts.........................................................................................    35
  Other Insurance, Guarantees and Similar Instruments or Agreements........................................    36
Yield, Maturity and Weighted Average Life Considerations...................................................    36
Servicing of the Mortgage Loans and Contracts..............................................................    38
  Collection and Other Servicing Procedures................................................................    39
  Private Mortgage Insurance...............................................................................    42
  Hazard Insurance.........................................................................................    43
  Unanticipated Recoveries of Losses on the Mortgage Loans.................................................    44
  Advances.................................................................................................    44
  Loan Payment Record......................................................................................    45
  Servicing and Other Compensation and Payment of Expenses.................................................    47
  Resignation, Succession and Indemnification of the Company...............................................    48
The Pooling and Servicing Agreement........................................................................    49
  Assignment of Assets.....................................................................................    49
  Repurchase or Substitution...............................................................................    51
  Certain Refinancings.....................................................................................    52
  Evidence as to Compliance................................................................................    52
  List of Certificateholders...............................................................................    52
  The Trustee..............................................................................................    53
  Administration of the Certificate Account................................................................    53
  Reports to Certificateholders............................................................................    54
  Events of Default........................................................................................    54
  Rights Upon Event of Default.............................................................................    55
  Amendment................................................................................................    55
  Termination..............................................................................................    56
</TABLE>
 
                                       4
<PAGE>

<TABLE>
<CAPTION>
                                                                                                              PAGE
                                                                                                              ----
<S>                                                                                                           <C>
GE Capital Mortgage Services, Inc..........................................................................    56
  General..................................................................................................    56
  Delinquency and Foreclosure Experience...................................................................    57
The Guarantor..............................................................................................    57
Certain Legal Aspects of the Mortgage Loans and Contracts..................................................    57
The Mortgage Loans.........................................................................................    57
  General..................................................................................................    57
  Foreclosure..............................................................................................    58
  Junior Mortgages; Rights of Senior Mortgagees............................................................    60
  Right of Redemption......................................................................................    61
  Anti-Deficiency Legislation and Other Limitations on Lenders.............................................    61
  Enforceability of Certain Provisions.....................................................................    62
  Applicability of Usury Laws..............................................................................    63
  Soldiers' and Sailors' Civil Relief Act..................................................................    63
  Environmental Considerations.............................................................................    63
The Contracts..............................................................................................    64
  General..................................................................................................    64
  Security Interests in the Manufactured Homes.............................................................    64
  Enforcement of Security Interests in Manufactured Homes..................................................    66
  Consumer Protection Laws.................................................................................    66
  Transfers of Manufactured Homes; Enforceability of 'Due-on-Sale' Clauses.................................    66
  Applicability of Usury Laws..............................................................................    67
  Soldiers' and Sailors' Civil Relief Act..................................................................    67
Legal Investment Matters...................................................................................    67
ERISA Considerations.......................................................................................    68
Certain Federal Income Tax Consequences....................................................................    70
  General..................................................................................................    70
  REMIC Elections..........................................................................................    70
  REMIC Certificates.......................................................................................    70
  Tax Opinion..............................................................................................    70
  Status of Certificates...................................................................................    71
  Income from Regular Certificates.........................................................................    71
  Income from Residual Certificates........................................................................    74
  Sale or Exchange of Certificates.........................................................................    76
  Taxation of Certain Foreign Investors....................................................................    77
  Transfers of Residual Certificates.......................................................................    77
  Servicing Compensation and Other REMIC Pool Expenses.....................................................    79
  Reporting and Administrative Matters.....................................................................    79
  Non-REMIC Certificates...................................................................................    80
  Trust Fund as Grantor Trust..............................................................................    80
  Status of the Certificates...............................................................................    80
  Possible Application of Stripped Bond Rules..............................................................    80
  Taxation of Certificates if Stripped Bond Rules Do Not Apply.............................................    81
  Taxation of Certificates if Stripped Bond Rules Apply....................................................    82
  Sales of Certificates....................................................................................    82
  Foreign Investors........................................................................................    82
  Reporting................................................................................................    83
  Backup Withholding.......................................................................................    83
Plan of Distribution.......................................................................................    83
Use of Proceeds............................................................................................    84
Legal Matters..............................................................................................    84
Financial Information......................................................................................    84
</TABLE>
 
                                       5

<PAGE>

                               PROSPECTUS SUMMARY
 
     The following summary is qualified in its entirety by reference to the
detailed information appearing elsewhere in this Prospectus and by reference to
the Prospectus Supplement relating to a particular series of Certificates.
Unless otherwise specified, capitalized terms used and not defined in this
Summary of Prospectus have the meanings given to them in this Prospectus and in
the related Prospectus Supplement.
 
     Title of Securities Pass-Through Certificates, issuable in series, as
described in the Prospectus Supplement.
 
<TABLE>
<S>                                         <C>
The Company...............................  GE Capital Mortgage Services, Inc. (the 'Company'), a wholly- owned
                                            subsidiary of GE Capital Mortgage Corporation. The Company will be
                                            the seller of the Mortgage Loans, Agency Securities or Contracts
                                            included in a Trust Fund. Unless otherwise specified in the
                                            Prospectus Supplement, the Company will service, and may act as
                                            master servicer with respect to, the Mortgage Loans or Contracts
                                            included in the related Trust Fund.
 
Description of Securities.................  Each Certificate will represent a beneficial ownership interest in a
                                            Trust Fund created by the Company from time to time pursuant to a
                                            pooling and servicing agreement (each, an 'Agreement') between the
                                            Company and the commercial bank or trust company acting as trustee
                                            specified in the Prospectus Supplement. The assets of a Trust Fund
                                            may consist of (i) a pool of mortgage loans secured by first liens or
                                            a combination of first and second liens on one- to four-family
                                            residential properties, or participation interests in such loans (the
                                            'Mortgage Loans'), originated or acquired by the Company, (ii)
                                            mortgage pass-through securities (the 'Agency Securities') issued or
                                            guaranteed by the Government National Mortgage Association ('GNMA'),
                                            the Federal National Mortgage Association ('FNMA') or the Federal
                                            Home Loan Mortgage Corporation ('FHLMC') or (iii) conditional sales
                                            contracts and installment sales or loan agreements or participation
                                            interests therein secured by manufactured housing (the 'Contracts').
                                            If the pool of Mortgage Loans included in any Trust Fund consists of
                                            a combination of first- and second-lien mortgage loans, the second-
                                            lien mortgage loans will be Home Equity Loans (as defined herein).
                                            The portion of any mortgage pool consisting of first-lien Mortgage
                                            Loans may be comprised of first-lien Home Equity Loans and/or other
                                            first-lien mortgage loans. If specified in the related Prospectus
                                            Supplement, a Trust Fund may also include one or more of the
                                            following: reinvestment income, reserve accounts and insurance,
                                            guarantees or similar instruments or agreements intended to decrease
                                            the likelihood that Certificateholders will experience delays in
                                            distributions of scheduled payments on, or losses in respect of, the
                                            assets in such Trust Fund. The Certificates of any series will be
                                            entitled to payment only from the proceeds from the assets of the
                                            related Trust Fund.
 
                                            The Certificates of any series may be issued in a single class or in
                                            two or more classes, as specified in the Prospectus Supplement. One
                                            or more classes of Certificates of each series (i) may be entitled to
                                            receive distributions allocable only to principal, only to interest
                                            or to any combination thereof; (ii) may be entitled to receive
                                            distributions only of prepayments of principal throughout the lives
                                            of the Certificates or during specified periods; (iii) may be
                                            subordinated in the right to receive distributions of scheduled
                                            payments of principal,
</TABLE>
 
                                       6
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            prepayments of principal, interest or any combination thereof to one
                                            or more other classes of Certificates of such series throughout the
                                            lives of the Certificates or during specified periods; (iv) may be
                                            entitled to receive such distributions only after the occurrence of
                                            events specified in the Prospectus Supplement; (v) may be entitled to
                                            receive distributions in accordance with a schedule or formula or on
                                            the basis of collections from designated portions of the assets in
                                            the Trust Fund; (vi) as to Certificates entitled to distributions
                                            allocable to interest, may be entitled to receive interest at a fixed
                                            rate or a rate that is subject to change from time to time; and (vii)
                                            as to Certificates entitled to distributions allocable to interest,
                                            may be entitled to distributions allocable to interest only after the
                                            occurrence of events specified in the Prospectus Supplement and may
                                            accrue interest until such events occur, in each case as specified in
                                            the Prospectus Supplement. The timing and amounts of such
                                            distributions may vary among classes, over time, or otherwise as
                                            specified in the related Prospectus Supplement. More than one Trust
                                            Fund may underlie the Certificates of a series, in which case
                                            specified Certificates of such series will evidence the entire
                                            beneficial interest in each such Trust Fund.
 
                                            The Company may retain or hold for sale from time to time one or more
                                            classes of a series of Certificates.
 
                                            Unless otherwise specified in the related Prospectus Supplement, the
                                            Certificates will be offered in fully registered form only in the
                                            denominations specified in the Prospectus Supplement. The
                                            Certificates will not be guaranteed or insured by any governmental
                                            agency or instrumentality or any other issuer and, except as
                                            described in the Prospectus Supplement, the Mortgage Loans or
                                            Contracts included in the related Trust Fund will not be guaranteed
                                            or insured by any governmental agency or instrumentality or any other
                                            person.
 
Distributions on the Certificates.........  Distributions on the Certificates entitled thereto will be made
                                            monthly, quarterly, semiannually or at such other intervals and on
                                            the dates specified in the Prospectus Supplement solely out of the
                                            payments received in respect of the assets of the related Trust Fund.
                                            The amount allocable to payments of principal and interest on any
                                            distribution date will be determined as specified in the Prospectus
                                            Supplement. Unless otherwise specified in the Prospectus Supplement,
                                            all distributions will be made pro rata to Certificateholders of the
                                            class entitled thereto based on such class's outstanding principal
                                            balance.
 
                                            The aggregate original principal balance of the Certificates will
                                            equal the aggregate distributions allocable to principal that such
                                            Certificates will be entitled to receive. If specified in the
                                            Prospectus Supplement, the Certificates will have an aggregate
                                            original principal balance equal to the aggregate unpaid principal
                                            balance of the Mortgage Loans, Agency Securities or Contracts as of
                                            the first day of the month of creation of the Trust Fund and will
                                            bear interest in the aggregate at a rate equal to the weighted
                                            average interest rate borne by the underlying Mortgage Loans, Agency
                                            Securities or Contracts, net of servicing fees payable to the Company
                                            and any primary or sub-servicers of the Mortgage Loans or Contracts
                                            and
</TABLE>
 
                                       7
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            any other amounts (including fees payable to the Company as master
                                            servicer, if applicable) specified in the Prospectus Supplement (as
                                            to each Mortgage Loan, the 'Remittance Rate'). If specified in the
                                            Prospectus Supplement, the aggregate original principal balance of
                                            the Certificates and interest rates on the classes of Certificates
                                            will be determined based on the cash flow on the Mortgage Loans,
                                            Agency Securities or Contracts, as the case may be.

                                            The rate at which interest will be passed through to holders of
                                            Certificates entitled thereto may be a fixed rate or a rate that is
                                            subject to change from time to time from the time and for the
                                            periods, in each case as specified in the Prospectus Supplement. Any
                                            such rate may be calculated on a loan-by-loan, weighted average or
                                            other basis, in each case as described in the Prospectus Supplement.

Trust Fund Assets.........................  The Trust Fund will include the Mortgage Loans, Agency Securities or
                                            Contracts, payments in respect of such assets and certain accounts,
                                            obligations or agreements, in each case as specified in the
                                            Prospectus Supplement.

A. The Mortgage Loans.....................  Unless otherwise specified in the Prospectus Supplement, each pool of
                                            Mortgage Loans will consist of conventional Mortgage Loans originated
                                            or acquired by the Company and secured by first liens or Home Equity
                                            Loans secured by first liens or a combination of first and second
                                            liens on one- to four-family residential properties located in one or
                                            more states of the United States or the District of Columbia. If the
                                            pool of Mortgage Loans included in any Trust Fund consists of a
                                            combination of first- and second-lien mortgage Loans, the second-lien
                                            mortgage loans will be Home Equity Loans (as defined herein). Any
                                            first lien Mortgage Loan in any mortgage pool will be either a
                                            first-lien Home Equity Loan and/or other first-lien mortgage loan. If
                                            so specified in the Prospectus Supplement, the Mortgage Loans may
                                            include cooperative apartment loans secured by security interests in
                                            shares issued by private, non-profit, cooperative housing
                                            corporations ('Cooperatives') and in the related proprietary leases
                                            or occupancy agreements granting exclusive rights to occupy specific
                                            dwelling units in such Cooperatives' buildings. If so specified in
                                            the Prospectus Supplement, the Mortgage Loans may include loans
                                            secured by mortgages on residential long-term leases of real
                                            property. Unless otherwise specified in the Prospectus Supplement,
                                            the principal balance of each Mortgage Loan at origination will not
                                            exceed $1,000,000. Unless otherwise specified in the Prospectus
                                            Supplement, the Mortgage Loans (other than Home Equity Loans) in the
                                            Trust Fund will all have original maturities of 10 to 30 years. If
                                            specified in the Prospectus Supplement, all or a portion of the
                                            Mortgage Loans in the Trust Fund may be closed-end, home equity loans
                                            secured by first or second liens on Mortgaged Properties ('Home
                                            Equity Loans').

                                            The payment terms of the Mortgage Loans to be included in a Trust
                                            Fund will be described in the related Prospectus Supplement and may
                                            include any of the following features or combinations thereof or
                                            other features described in the related Prospectus Supplement:
 
                                              (a) Interest may be payable at a fixed rate, a rate adjustable from
                                              time to time in relation to an index, a rate that is fixed for a
                                              period
</TABLE>
 
                                       8
<PAGE>
 
<TABLE>
<S>                                         <C>
                                              of time or under certain circumstances and is followed by an
                                              adjustable rate, a rate that otherwise varies from time to time, or
                                              a rate that is convertible from an adjustable rate to a fixed rate.
                                              Changes to an adjustable rate may be subject to periodic
                                              limitations, maximum rates, minimum rates or a combination of such
                                              limitations. Accrued interest may be deferred and added to the
                                              principal of a loan for such periods and under such circumstances
                                              as may be specified in the related Prospectus Supplement. Mortgage
                                              Loans may provide for the payment of interest at a rate lower than
                                              the specified mortgage rate for a period of time or for the life of
                                              the loan with the amount of any difference contributed from funds
                                              supplied by the seller of the mortgaged property or another source.
 
                                              (b) Principal may be payable on a level-debt-service basis which
                                              fully amortizes the loan over its term, may be calculated on the
                                              basis of an assumed amortization schedule that is significantly
                                              longer than the original term to maturity or on an interest rate
                                              that is different from the interest rate on the Mortgage Loan or
                                              may not be amortized during all or a portion of the original term.
                                              Payment of all or a substantial portion of the principal may be due
                                              on maturity. Principal may include interest that has been deferred
                                              and added to the principal balance of the Mortgage Loan. In the
                                              case of Home Equity Loans which are 'simple interest' loans,
                                              payments are applied first to interest accrued to the date payment
                                              is received, then to principal.
 
                                              (c) Monthly payments of principal and interest may be fixed for the
                                              life of the loan, may increase over a specified period of time or
                                              may change from period to period. Mortgage Loans may include limits
                                              on periodic increases or decreases in the amount of monthly
                                              payments and may include maximum or minimum amounts of monthly
                                              payments.
 
                                              (d) Prepayments of principal may be subject to a prepayment fee,
                                              which may be fixed for the life of the loan or may decline over
                                              time, and may be prohibited for the life of the loan or for certain
                                              periods ('lockout periods'). Certain loans may permit prepayments
                                              after expiration of the applicable lockout period and may require
                                              the payment of a prepayment fee in connection with any such
                                              subsequent prepayment. Other loans may permit prepayments without
                                              payment of any prepayment fee and others may require the payment of
                                              a fee if the prepayment occurs during specified time periods. The
                                              loans may include 'due-on-sale' clauses which permit the mortgagee
                                              to demand payment of the entire mortgage loan in connection with
                                              the sale or certain transfers of the related mortgaged property.
                                              Other loans may be assumable by persons meeting the then applicable
                                              underwriting standards of the Company.
 
B. The Agency Securities..................  The Agency Securities evidenced by a series of Certificates will
                                            consist of (i) mortgage participation certificates issued and
                                            guaranteed as to timely payment of interest and, unless otherwise
                                            specified in the related Prospectus Supplement, ultimate payment of
                                            principal by the Federal Home Loan Mortgage Corporation ('FHLMC
                                            Certificates'), (ii) guaranteed mortgage pass-through
</TABLE>
 
                                       9
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            certificates issued and guaranteed as to timely payment of principal
                                            and interest by the Federal National Mortgage Association ('FNMA
                                            Certificates'), (iii) 'fully modified pass-through' mortgage-backed
                                            certificates guaranteed as to timely payment of principal and
                                            interest by the Government National Mortgage Association ('GNMA
                                            Certificates'), (iv) stripped mortgage-backed securities representing
                                            an undivided interest in all or a part of either the principal
                                            distributions (but not the interest distributions) or the interest
                                            distributions (but not the principal distributions) or in some
                                            specified portion of the principal and interest distributions (but
                                            not all of such distributions) on certain FHLMC, FNMA or GNMA
                                            Certificates and, unless otherwise specified in the Prospectus
                                            Supplement, guaranteed to the same extent as the underlying
                                            securities, or (v) a combination of such Agency Securities. All GNMA
                                            Certificates will be backed by the full faith and credit of the
                                            United States. No FHLMC or FNMA Certificates will be backed, directly
                                            or indirectly, by the full faith and credit of the United States.
 
                                            The Agency Securities may consist of pass-through securities issued
                                            under FHLMC's Cash or Guarantor Program, the GNMA I Program, the GNMA
                                            II Program or another program specified in the Prospectus Supplement.
                                            Agency Securities may be backed by adjustable, fixed or variable rate
                                            mortgage loans or graduated payment mortgage loans.
 
C. Contracts..............................  Contracts will consist of conditional sales contracts and installment
                                            sales or loan agreements or participation interests therein secured
                                            by new or used Manufactured Homes (as defined herein). Contracts may
                                            be conventional, insured by the Federal Housing Authority ('FHA') or
                                            partially guaranteed by the Veterans Administration ('VA'), as
                                            specified in the related Prospectus Supplement. Unless otherwise
                                            specified in the related Prospectus Supplement, each Contract will be
                                            fully amortizing and will bear interest at a fixed percentage rate
                                            ('APR'). Unless otherwise specified in the related Prospectus
                                            Supplement, Contracts will have had individual principal balances at
                                            origination of not less than $10,000 and not more than $1,000,000 and
                                            original terms to stated maturity of 5 to 30 years.
 
Certificate Account.......................  With respect to each Trust Fund, the Company, as servicer or master
                                            servicer, will be obligated to establish an account with the trustee
                                            into which it will deposit on the dates specified in the related
                                            Prospectus Supplement payments received in respect of the assets in
                                            such Trust Fund. If specified in the Prospectus Supplement, such
                                            payments will be invested for the benefit of Certificateholders for
                                            the periods and in the investments specified in the Prospectus
                                            Supplement.
 
Advances..................................  Unless otherwise specified in the Prospectus Supplement, the Company,
                                            as servicer or master servicer of the Mortgage Loans or Contracts,
                                            will be obligated to advance delinquent installments of principal and
                                            interest (the latter adjusted to the applicable Remittance Rate) on
                                            the Mortgage Loans or Contracts in a Trust Fund. Any such obligation
                                            to make advances may be limited to amounts due holders of senior
                                            Certificates of the related series, to amounts deemed to be
                                            recoverable from late payments or liquidation proceeds, for specified
                                            periods or any combination thereof, in each
</TABLE>
 
                                       10
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            case as specified in the related Prospectus Supplement. Any such
                                            advance will be recoverable by the Company as specified in the
                                            related Prospectus Supplement.
 
Credit Support............................  If specified in the Prospectus Supplement, a series of Certificates,
                                            or certain classes within such series, may have the benefit of one or
                                            more of the following types of credit support. The protection against
                                            losses afforded by any such credit support will be limited.
 
A. Purchase of Liquidating Loans..........  If so specified in the Prospectus Supplement, the Company will have a
                                            limited obligation to cover losses due to defaults with respect to
                                            the Mortgage Loans by purchasing any Mortgage Loan (a 'Liquidating
                                            Loan') as to which either (i) liquidation proceedings have been
                                            commenced and any equitable or statutory right to reinstate such
                                            Mortgage Loan has expired or (ii) the Company has agreed to accept a
                                            deed in lieu of foreclosure. Unless otherwise specified in the
                                            Prospectus Supplement, the purchase price for any Liquidating Loan
                                            will be the Principal Balance thereof plus one month's interest
                                            thereon at the Remittance Rate.
 
                                            The Company's maximum liability to purchase Liquidating Loans will be
                                            limited as specified in the Prospectus Supplement and, unless
                                            otherwise specified in the Prospectus Supplement, will be reduced by
                                            all unreimbursed payments previously made by the Company with respect
                                            to Delinquent Mortgage Loans (as defined below) and Liquidating
                                            Loans. In the event that at any time the Company's maximum liability
                                            to purchase Liquidating Loans is exhausted with respect to a Trust
                                            Fund, all further losses on the Mortgage Loans will be borne by the
                                            holders of one or more classes of the Certificates of the related
                                            series, unless the amount of the Company's liability is subsequently
                                            restored as a result of recoveries in respect of Liquidating Loans or
                                            Delinquent Mortgage Loans previously purchased by the Company.
 
                                            Unless otherwise specified in the Prospectus Supplement, in
                                            connection with its obligation to purchase Liquidating Loans, the
                                            Company will have the option to purchase any Mortgage Loan as to
                                            which the mortgagor has failed to make unexcused payment in full of
                                            three or more scheduled payments of principal and interest (a
                                            'Delinquent Mortgage Loan'). If the Company exercises this option
                                            with respect to any Delinquent Mortgage Loan, unless otherwise
                                            specified in the Prospectus Supplement, the Company will purchase
                                            such Delinquent Mortgage Loan for a price equal to 100% of its
                                            Principal Balance plus interest thereon at the applicable Remittance
                                            Rate from the date on which interest was last paid to the first day
                                            of the month in which such purchase price is to be distributed, net
                                            of any unreimbursed advances of principal and interest thereon made
                                            by the Company as servicer.
 
B. Limited Guarantee......................  If specified in the Prospectus Supplement, certain obligations of the
                                            Company under the related Agreement, including obligations of the
                                            Company to cover certain deficiencies in principal or interest
                                            payments on the Mortgage Loans resulting from the bankruptcy of the
                                            related borrower, may be covered by a financial guarantee policy,
                                            limited guarantee or other similar instrument (the 'Limited
                                            Guarantee'), limited in scope and amount, issued by an entity
</TABLE>
 
                                       11
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            named in the Prospectus Supplement, which may be an affiliate of the
                                            Company (the 'Guarantor'). If so specified, the Guarantor may be
                                            obligated to take one or more of the following actions in the event
                                            the Company fails to do so: make deposits to the Certificate Account
                                            (a 'Deposit Guarantee'), make advances (an 'Advance Guarantee'), or
                                            purchase Liquidating Loans (a 'Liquidating Loan Guarantee'). Any such
                                            Limited Guarantee will be limited in amount and a portion of the
                                            coverage of any such Limited Guarantee may be separately allocated to
                                            certain events. For example, a portion of the aggregate amount of a
                                            Liquidating Loan Guarantee may be separately allocated to Liquidating
                                            Loans due to special hazards not covered by standard hazard insurance
                                            policies, Liquidating Loans due to the bankruptcy of a mortgagor, and
                                            other Liquidating Loans. The scope, amount and, if applicable, the
                                            allocation of any Limited Guarantee will be described in the related
                                            Prospectus Supplement.
 
C. Subordination..........................  A series of Certificates may include one or more classes that are
                                            subordinate in the right to receive distributions on such
                                            Certificates to one or more senior classes of Certificates of the
                                            same series, but only to the extent described in the related
                                            Prospectus Supplement. If so specified in the related Prospectus
                                            Supplement, the same class of Certificates may constitute senior
                                            Certificates with respect to certain types of payments or certain
                                            losses and subordinated Certificates with respect to other types of
                                            payments or losses. If so specified in the related Prospectus
                                            Supplement, subordination may apply only in the event of certain
                                            types of losses not covered by other forms of credit support, such as
                                            hazard losses not covered by standard hazard insurance policies or
                                            losses resulting from the bankruptcy of the borrower.
 
                                            If specified in the Prospectus Supplement, a reserve fund may be
                                            established and maintained by the deposit therein of distributions
                                            allocable to the holders of subordinate Certificates until a
                                            specified level is reached. The related Prospectus Supplement will
                                            set forth information concerning the amount of subordination of a
                                            class or classes of subordinate Certificates in a series, the
                                            circumstances in which such subordination will be applicable, the
                                            manner, if any, in which the amount of subordination will decrease
                                            over time, the manner of funding the related reserve fund, if any,
                                            and the conditions under which amounts in any such reserve fund will
                                            be used to make distributions to holders of senior Certificates or
                                            released from the related Trust Fund.
 
D. Cross-Support..........................  If specified in the Prospectus Supplement, the beneficial ownership
                                            of separate groups of assets included in a Trust Fund may be
                                            evidenced by separate classes of the related series of Certificates.
                                            In such case, and if so specified, credit support may be provided by
                                            a cross-support feature which requires that distributions be made
                                            with respect to Certificates evidencing beneficial ownership of one
                                            or more asset groups prior to distributions to subordinate
                                            Certificates evidencing a beneficial ownership interest in other
                                            asset groups within the same Trust Fund.
 
                                            If specified in the Prospectus Supplement, the coverage provided by
                                            one or more forms of credit support may apply concurrently to two or
                                            more separate Trust Funds. If applicable, the Prospectus
</TABLE>
 
                                       12
<PAGE>
 
<TABLE>
<S>                                         <C>
                                            Supplement will identify the Trust Funds to which such credit support
                                            relates and the manner of determining the amount of the coverage
                                            provided thereby and of the application of such coverage to the
                                            identified Trust Funds.
 
E. Pool and Special
  Hazard Insurance........................  In order to decrease the likelihood that Certificateholders will
                                            experience losses in respect of the Mortgage Loans or Contracts, if
                                            specified in the Prospectus Supplement, the Company will obtain one
                                            or more insurance policies to cover (i) losses by reason of defaults
                                            by borrowers (a 'Mortgage Pool Insurance Policy') and (ii) losses by
                                            reason of hazards not covered under the standard form of hazard
                                            insurance, in each case up to the amounts, for the periods and
                                            subject to the conditions specified in the Prospectus Supplement. See
                                            'Credit Support--Pool Insurance'.
 
F. Reserve Accounts, Other Insurance,
  Guarantees and Similar
  Instruments and Agreements..............  In order to decrease the likelihood that Certificateholders will
                                            experience delays in the receipt of scheduled payments on, and losses
                                            in respect of, the assets in a Trust Fund, if specified in the
                                            related Prospectus Supplement, such Trust Fund may also include
                                            reserve accounts, other insurance, guarantees and similar instruments
                                            and agreements entered into with the entities, in the amounts, for
                                            the purposes and subject to the conditions specified in the
                                            Prospectus Supplement.
 
Certain Federal Income
  Tax Consequences........................  The federal income tax consequences to Certificateholders will depend
                                            on, among other factors, whether an election is made to treat each
                                            Trust Fund or specified portions thereof as a 'real estate mortgage
                                            investment conduit' ('REMIC') under the provisions of the Internal
                                            Revenue Code of 1986, as amended (the 'Code'). See 'Certain Federal
                                            Income Tax Consequences'.
 
ERISA Considerations......................  A fiduciary of any employee benefit plan subject to the Employee
                                            Retirement Income Security Act of 1974, as amended ('ERISA'), or a
                                            plan subject to Section 4975 of the Code should carefully review with
                                            its own legal advisors whether the purchase or holding of
                                            Certificates could give rise to a transaction prohibited or otherwise
                                            impermissible under ERISA or Section 4975 of the Code. See 'ERISA
                                            Considerations'.
 
Legal Investment Matters..................  Unless otherwise specified in the Prospectus Supplement, Certificates
                                            of each series offered by this Prospectus and the related Prospectus
                                            Supplement will constitute 'mortgage related securities' under the
                                            Secondary Mortgage Market Enhancement Act of 1984 ('SMMEA') and, as
                                            such, will be legal investments for certain types of institutional
                                            investors to the extent provided in SMMEA, subject, in any case, to
                                            any other regulations which may govern investments by such
                                            institutional investors. If so specified in the Prospectus
                                            Supplement, all or certain classes of the Certificates of the related
                                            series may not constitute 'mortgage related securities' under SMMEA.
                                            See 'Legal Investment Matters'.
</TABLE>
 
                                       13

<PAGE>

                        DESCRIPTION OF THE CERTIFICATES
 
     Each series of Certificates will be issued pursuant to a separate pooling
and servicing agreement (each, an 'Agreement') entered into between the Company,
as seller, and a commercial bank or trust company named in the Prospectus
Supplement, as trustee (the 'Trustee') for the benefit of holders of
Certificates of that series. More than one Trust Fund may underlie the
Certificates of a series, in which case specified Certificates of such series
will evidence the entire beneficial interest in one of such Trust Funds. The
provisions of each Agreement will vary depending upon the nature of the
Certificates to be issued thereunder and the nature of the related Trust Fund.
The Agreement will be substantially in one of the forms filed as an exhibit to
the Registration Statement of which this Prospectus is a part, or in such
similar form as will reflect the terms of a series of Certificates described in
the Prospectus Supplement. The following summaries describe certain provisions
which may appear in each Agreement. The Prospectus Supplement for a series of
Certificates will describe any provision of the Agreement relating to such
series that materially differs from the description thereof contained in this
Prospectus. The summaries do not purport to be complete and are subject to, and
are qualified in their entirety by reference to, all of the provisions of the
Agreement for each series of Certificates and the applicable Prospectus
Supplement. The Company will provide Certificateholders, without charge, on
written request a copy of the Agreement for any series. Requests should be
addressed to GE Capital Mortgage Services, Inc., Three Executive Campus, Cherry
Hill, New Jersey 08002, Attention: General Counsel. The Agreement relating to a
series of Certificates will be filed with the Securities and Exchange Commission
within 15 days after the date of issuance of such series of Certificates (the
'Delivery Date').
 
     The Certificates of a series will be entitled to payment only from the
proceeds from the assets included in the Trust Fund related to such series and
will not be entitled to payments in respect of the assets included in any other
trust fund established by the Company. The Certificates will not represent
obligations of General Electric Company, General Electric Capital Corporation,
GE Capital Mortgage Corporation, General Electric Mortgage Insurance
Corporation, the Company or any affiliate of the Company and will not be
guaranteed by any governmental agency or any other person. Unless otherwise
specified in the Prospectus Supplement, the Company's only obligations with
respect to the Certificates will consist of its contractual servicing and/or
master servicing obligations, including any obligation to make advances under
certain limited circumstances specified herein of delinquent installments of
principal and interest (adjusted to the applicable Remittance Rate), its
obligations pursuant to certain representations and warranties made by it and
its obligations to cover certain deficiencies in principal and interest payments
on the Mortgage Loans resulting from the bankruptcy of the related borrower. See
'The Trust Fund' herein.
 
     The Mortgage Loans will not be, and the Contracts may not be, insured or
guaranteed by any governmental entity or, except as specified in the Prospectus
Supplement, by any other person. To the extent that delinquent payments on or
losses in respect of defaulted Mortgage Loans or Contracts are not advanced by
the Company or any other entity or paid from any applicable credit support
arrangement, such delinquencies may result in delays in the distribution of
payments to the holders of one or more classes of Certificates, and such losses
will be borne by the holders of one or more classes of Certificates.
 
GENERAL
 
     Unless otherwise specified in the Prospectus Supplement, the Certificates
of each series will be issued in fully-registered form only. The minimum
original Certificate Principal Balance or Notional Principal Balance that may be
represented by a Certificate (the 'denomination') will be specified in the
Prospectus Supplement. The original Certificate Principal Balance of each
Certificate will equal the aggregate distributions allocable to principal to
which such Certificate is entitled. Unless otherwise specified in the Prospectus
Supplement, distributions allocable to interest on each Certificate that is not
entitled to distributions allocable to principal will be calculated based on the
Notional Principal Balance of such Certificate. The Notional Principal Balance
of a Certificate will not evidence an interest in or entitlement to
distributions allocable to principal but will be used solely for convenience in
expressing the calculation of interest and for certain other purposes.
 
     The Certificates will be transferable and exchangeable on a Certificate
Register to be maintained at the corporate trust office of the Trustee or such
other office or agency maintained for such purposes by the Trustee in New York
City. Unless otherwise specified in the Prospectus Supplement, under each
Agreement, the Trustee
 
                                       14

<PAGE>

will initially be appointed as the Certificate Registrar. Unless otherwise
specified in the Prospectus Supplement, no service charge will be made for any
registration of transfer or exchange of Certificates, but payment of a sum
sufficient to cover any tax or other governmental charge may be required.
 
CLASSES OF CERTIFICATES
 
     Each series of Certificates will be issued in a single class or in two or
more classes. The Certificates of each class will evidence the beneficial
ownership of (i) any distributions in respect of the assets of the Trust Fund
that are allocable to principal, in the aggregate amount of the original
Certificate Principal Balance, if any, of such class of Certificates as
specified in the Prospectus Supplement and (ii) any distributions in respect of
the assets of the Trust Fund that are allocable to interest on the Certificate
Principal Balance or Notional Principal Balance of such Certificates from time
to time at the Certificate Interest Rate, if any, applicable to such class of
Certificates as specified in the Prospectus Supplement. If specified in the
Prospectus Supplement, one or more classes of a series of Certificates may
evidence beneficial ownership interests in separate groups of assets included in
the related Trust Fund.
 
     If specified in the Prospectus Supplement, the Certificates will have an
aggregate original Certificate Principal Balance equal to the aggregate unpaid
principal balance of the Mortgage Loans, Agency Securities or Contracts as of
the close of business on the first day of the month of creation of the Trust
Fund (the 'Cut-off Date') after deducting payments of principal due on or
before, and prepayments of principal received before, the Cut-off Date and will
bear interest in the aggregate equal to the weighted average of the Remittance
Rates. The Remittance Rate will equal the rate of interest payable on each
Mortgage Loan or Contract minus the Company's servicing fee as described herein,
the servicing fee of any third party servicer of the Mortgage Loans or Contracts
and such other amounts (including fees payable to the Company as master
servicer, if applicable) as are specified in the Prospectus Supplement. If
specified in the Prospectus Supplement, the original Certificate Principal
Balance of the Certificates and the interest rate on the classes of Certificates
will be determined based on the cash flow on the Mortgage Loans, Agency
Securities or Contracts, as the case may be. The Certificates may have an
original Certificate Principal Balance as determined in the manner specified in
the Prospectus Supplement.
 
     Each class of Certificates that is entitled to distributions allocable to
interest will bear interest at a fixed rate or a rate that is subject to change
from time to time (a) in accordance with a schedule, (b) in reference to an
index, or (c) otherwise (each, a 'Certificate Interest Rate'), in each case as
specified in the Prospectus Supplement. One or more classes of Certificates may
provide for interest that accrues, but is not currently payable ('Accrual
Certificates'). With respect to any class of Accrual Certificates, if specified
in the Prospectus Supplement, any interest that has accrued but is not paid on a
given Distribution Date (as defined below under 'Distributions of Principal and
Interest') will be added to the aggregate Certificate Principal Balance of such
class of Certificates on that Distribution Date.
 
     A series of Certificates may include one or more classes entitled only to
distributions (i) allocable to interest, (ii) allocable to principal (and
allocable as between scheduled payments of principal and Principal Prepayments,
as defined below) or (iii) allocable to both principal (and allocable as between
scheduled payments of principal and Principal Prepayments) and interest. A
series of Certificates may consist of one or more classes as to which
distributions will be allocated (i) on the basis of collections from designated
portions of the assets of the Trust Fund, (ii) in accordance with a schedule or
formula, (iii) in relation to the occurrence of events, or (iv) otherwise, in
each case as specified in the Prospectus Supplement. The timing and amounts of
such distributions may vary among classes, over time or otherwise, in each case
as specified in the Prospectus Supplement.
 
     The taking of action with respect to certain matters under the Agreement,
including certain amendments thereto, will require the consent of the holders of
the Certificates. The voting rights allocated to each class of Certificates will
be specified in the Prospectus Supplement. Votes may be allocated in different
proportions among classes of Certificates depending on whether the Certificates
of a class have a Notional Principal Balance or a Certificate Principal Balance.
 
                                       15

<PAGE>

DISTRIBUTIONS OF PRINCIPAL AND INTEREST
 
     General.  Distributions of principal and interest at the applicable
Certificate Interest Rate (if any) on the Certificates will be made by the
Trustee to the extent of funds available on the dates specified in the
Prospectus Supplement (each, a 'Distribution Date') and may be made monthly,
quarterly, semiannually or at such other intervals as are specified in the
Prospectus Supplement. Distributions will be made to the persons in whose names
the Certificates are registered at the close of business on the dates specified
in the Prospectus Supplement (each, a 'Record Date'). Distributions will be made
by check or money order mailed to the person entitled thereto at the address
appearing in the Certificate Register or, if specified in the Prospectus
Supplement, in the case of Certificates that are of a certain minimum
denomination as specified in the Prospectus Supplement, upon written request by
the Certificateholder, by wire transfer or by such other means as are agreed
upon with the person entitled thereto; provided, however, that the final
distribution in retirement of the Certificates will be made only upon
presentation and surrender of the Certificates at the office or agency of the
Trustee specified in the notice to Certificateholders of such final
distribution.
 
     Distributions allocable to principal and interest on the Certificates will
be made by the Trustee out of, and only to the extent of, funds in a separate
account established and maintained under the Agreement for the benefit of
holders of the Certificates of the related series (the 'Certificate Account'),
including any funds transferred from any Reserve Account. As between
Certificates of different classes and as between distributions of principal
(and, if applicable, between distributions of Principal Prepayments and
scheduled payments of principal) and interest, distributions made on any
Distribution Date will be applied as specified in the Prospectus Supplement.
Unless otherwise specified in the Prospectus Supplement, distributions to any
class of Certificates will be made pro rata to all Certificateholders of that
class. If so specified in the Prospectus Supplement, the amounts received by the
Trustee as described below under 'The Trust Fund' will be invested in the
eligible investments specified herein and in the Prospectus Supplement and all
income or other gain from such investments will be deposited in the Certificate
Account and will be available to make payments on the Certificates on the next
succeeding Distribution Date in the manner specified in the Prospectus
Supplement.
 
     Distributions of Interest.  Unless otherwise specified in the Prospectus
Supplement, interest will accrue on the aggregate Certificate Principal Balance
(or, in the case of Certificates entitled only to distributions allocable to
interest, the aggregate Notional Principal Balance) of each class of
Certificates entitled to interest from the date, at the Certificate Interest
Rate and for the periods (each, an 'Interest Accrual Period') specified in the
Prospectus Supplement. To the extent funds are available therefor, interest
accrued during each Interest Accrual Period on each class of Certificates
entitled to interest (other than a class of Accrual Certificates) will be
distributable on the Distribution Dates specified in the Prospectus Supplement
until the aggregate Certificate Principal Balance of the Certificates of such
class has been distributed in full or, in the case of Certificates entitled only
to distributions allocable to interest, until the aggregate Notional Principal
Balance of such Certificates is reduced to zero or for the period of time
designated in the Prospectus Supplement. Unless otherwise specified in the
Prospectus Supplement, distributions of interest on each class of Accrual
Certificates will commence only after the occurrence of the events specified in
the Prospectus Supplement. Unless otherwise specified in the Prospectus
Supplement, prior to such time, the beneficial ownership interest of such class
of Accrual Certificates in the Trust Fund, as reflected in the aggregate
Certificate Principal Balance of such class of Accrual Certificates, will
increase on each Distribution Date by the amount of interest that accrued on
such class of Accrual Certificates during the preceding Interest Accrual Period
but that was not required to be distributed to such class on such Distribution
Date. Any such class of Accrual Certificates will thereafter accrue interest on
its outstanding Certificate Principal Balance as so adjusted.
 
     Distributions of Principal.  Unless otherwise specified in the Prospectus
Supplement, the aggregate Certificate Principal Balance of any class of
Certificates entitled to distributions of principal will be the aggregate
original Certificate Principal Balance of such class of Certificates specified
in the Prospectus Supplement, reduced by all distributions reported to the
holders of such Certificates as allocable to principal, and, in the case of
Accrual Certificates, unless otherwise specified in the Prospectus Supplement,
increased by all interest accrued but not then distributable on such Accrual
Certificates. The Prospectus Supplement will specify the method by which the
amount of principal to be distributed on the Certificates on each Distribution
Date will be calculated and the manner in which such amount will be allocated
among the classes of Certificates entitled to distributions of principal.
 
                                       16

<PAGE>

     If so provided in the Prospectus Supplement, one or more classes of senior
Certificates will be entitled to receive all or a disproportionate percentage of
the payments or other recoveries of principal on a Mortgage Loan which are
received in advance of their scheduled due dates and not accompanied by amounts
of interest representing scheduled interest due after the month of such payments
('Principal Prepayments') in the percentages and under the circumstances or for
the periods specified in the Prospectus Supplement. Any such allocation of
Principal Prepayments to such class or classes of Certificateholders will have
the effect of accelerating the amortization of such senior Certificates while
increasing the interests evidenced by the subordinated Certificates in the Trust
Fund. Increasing the interests of the subordinated Certificates relative to that
of the senior Certificates is intended to preserve the availability of the
subordination provided by the subordinated Certificates. See 'Credit
Support--Subordination'.
 
     Unscheduled Distributions.  If specified in the Prospectus Supplement, the
Certificates will be subject to receipt of distributions before the next
scheduled Distribution Date under the circumstances and in the manner described
below and in the Prospectus Supplement. If applicable, the Trustee will be
required to make such unscheduled distributions on the day and in the amount
specified in the Prospectus Supplement if, due to substantial payments of
principal (including Principal Prepayments) on the Mortgage Loans, Agency
Securities or Contracts, low rates then available for reinvestment of such
payments or both, the Trustee determines, based on the assumptions specified in
the Agreement, that the amount anticipated to be on deposit in the Certificate
Account on the next Distribution Date, together with, if applicable, any amounts
available to be withdrawn from any Reserve Account, may be insufficient to make
required distributions on the Certificates on such Distribution Date. Unless
otherwise specified in the Prospectus Supplement, the amount of any such
unscheduled distribution that is allocable to principal will not exceed the
amount that would otherwise have been required to be distributed as principal on
the Certificates on the next Distribution Date. Unless otherwise specified in
the Prospectus Supplement, all unscheduled distributions will include interest
at the applicable Certificate Interest Rate (if any) on the amount of the
unscheduled distribution allocable to principal for the period and to the date
specified in the Prospectus Supplement.
 
     Unless otherwise specified in the Prospectus Supplement, all distributions
allocable to principal in any unscheduled distribution will be made in the same
priority and manner as distributions of principal on the Certificates would have
been made on the next Distribution Date, and with respect to Certificates of the
same class, unscheduled distributions of principal will be made on a pro rata
basis. Notice of any unscheduled distribution will be given by the Trustee prior
to the date of such distribution.
 
EXAMPLE OF DISTRIBUTIONS
 
     The following chart sets forth an example of hypothetical distributions on
a series of the Certificates for the Distribution Date occurring in March 1998,
assuming such Certificates are issued during January 1998. All references to the
Trust Fund, Certificateholders, Mortgage Loans, Loan Payment Record and
Certificate Account refer to those related to such series of Certificates. The
following discussion of the allocation of Mortgage Loan payments as between
principal and interest would not necessarily apply to simple-interest Home
Equity Loans or Mortgage Loans that do not provide for payments of principal and
interest in arrears on a monthly basis, and if a series of Certificates is
backed by a material amount of such Mortgage Loans, the Prospectus Supplement
will describe the allocation of such payments and the manner in which
distributions thereof will be made to Certificateholders.
 
<TABLE>
<S>                       <C>
January 1...............  Cut-off Date.  The aggregate unpaid principal balance of the Mortgage Loans after
                          deducting principal payments due and payable on or before January 1 and Principal
                          Prepayments received before January 1 will be included in the Trust Fund. These deducted
                          principal payments and Principal Prepayments will be retained by the Company and will
                          not be included in the Trust Fund or passed through to Certificateholders.
 
February 1-28...........  Voluntary principal prepayments in full (and interest thereon to the date of prepayment)
                          received from February 16 through February 28 will be passed through to the related
                          Certificateholders on March 25, 1998. (Voluntary principal prepayments in full received
                          by the Company (or, in the case of Mortgage Loans master-serviced by
</TABLE>
 
                                       17

<PAGE>

<TABLE>
<S>                       <C>
                          the Company, of which the Company receives notice) from February 1 through February 15
                          will be passed through to the Certificateholders (net of any interest thereon) in the
                          month of their receipt.) Other unscheduled prepayments received at any time during the
                          month will be passed through to the related Certificateholders on March 25.
 
February 28.............  Record Date.  Distributions on March 25 will be made to Certificateholders of record at
                          the close of business on the last business day of the month immediately preceding the
                          month of distribution.
 
March 1-17..............  Through March 15, the Company receives (or, in the case of Mortgage Loans master-
                          serviced by the Company, receives notice of) any voluntary principal prepayments in full
                          and interest thereon to the date of prepayment. Such principal prepayments (net of any
                          interest) will be credited to the Loan Payment Record and deposited into the Certificate
                          Account for distribution to the related Certificateholders on March 25. Through March
                          17, the Company receives interest on February 1 principal balances plus principal due
                          March 1. Payments due on March 1 from Mortgagors will be credited to the Loan Payment
                          Record as received. Such payments will include the scheduled principal payments
                          received, plus one month's interest on the February 1 principal balances, less interest
                          to the extent described above on the prepaid amount of any Mortgage Loan prepaid during
                          February. Payments received from Mortgagors after March 15 will be subject to a late
                          charge in accordance with the terms of the related mortgage instruments (with such late
                          charges being retained by the Company).
 
March 18................  Determination Date.  On the fifth business day preceding the Distribution Date, the
                          Company determines the aggregate amount of distributions to be made on the Certificates
                          on the following Distribution Date.
 
March 23................  The Company furnishes notice of the distribution amount to the Trustee on the second
                          business day preceding the Distribution Date.
 
March 24................  Deposit Date.  On the business day preceding the Distribution Date, the Company
                          transfers amounts to be distributed to Certificateholders in the Certificate Account.
 
March 25................  Distribution Date.  On March 25, the Trustee will distribute to Certificateholders the
                          aggregate amounts set forth in the notice it received from the Company on March 23. If a
                          payment due March 1 is received from a Mortgagor on or after the Determination Date and
                          the Company, as servicer, has advanced funds in the amount of such payment to the
                          Certificateholders, such late payment will be paid to the Company. If no such advance
                          has been made, such late payment will be passed through to such Certificateholders at
                          the time of the next distribution.
</TABLE>
 
OPTIONAL TERMINATION OF THE TRUST FUND
 
     If so specified in the Prospectus Supplement, either the Company or the
holders of one or more classes of Certificates specified in the Prospectus
Supplement may, at its or their option, effect early termination of the Trust
Fund, on any Distribution Date after the time specified in the Prospectus
Supplement, by purchasing all of the Certificates or the assets in the Trust
Fund at a price and in accordance with the procedures specified in the
Prospectus Supplement. The proceeds of such sale will be applied on such
Distribution Date to the distribution in full of the Certificate Principal
Balance of each outstanding Certificate entitled to distributions allocable to
principal and to accrued interest at the applicable Certificate Interest Rate to
the date specified in the Prospectus Supplement on each Certificate entitled to
distributions allocable to interest, or to such other amount as is specified in
the Prospectus Supplement. Notice of such optional termination will be given by
the Trustee prior to such Distribution Date.
 
                                       18

<PAGE>

                                 THE TRUST FUND
 
     Each Trust Fund related to a series of Certificates may consist of (i) the
Mortgage Loans, Agency Securities or Contracts, as the case may be, subject to
the Agreement from time to time (subject, if specified in the Prospectus
Supplement, to certain exclusions); (ii) all payments (subject, if specified in
the Prospectus Supplement, to certain exclusions) in respect of such assets
adjusted in the case of interest payments on Mortgage Loans or Contracts, to the
applicable Remittance Rates; (iii) if specified in the Prospectus Supplement,
reinvestment income on such payments; (iv) all property acquired by foreclosure
or deed in lieu of foreclosure with respect to any Mortgage Loan or by
repossession with respect to any Contract; (v) all rights of the Company under
any private mortgage insurance policies and any other insurance policies
required to be maintained in respect of the Mortgage Loans or Contracts; and
(vi) if so specified in the Prospectus Supplement, one or more of the following:
(1) any Reserve Accounts; (2) any Liquidating Loan, Advance or Deposit
Guarantees (as defined herein); and (3) any pool insurance, special hazard
insurance or other insurance, guarantee or similar instruments or agreements.
 
     The Certificates will be entitled to payment only from the assets of the
related Trust Fund and will not be entitled to payments in respect of the assets
of any other trust fund established by the Company, including, in the case of a
series comprised of more than one Trust Fund, the Trust Fund underlying other
specified Certificates of such series. The primary assets of any trust fund will
consist of Mortgage Loans, Agency Securities or Contracts but not a combination
thereof.
 
     Mortgage Loans, Agency Securities and Contracts will be originated or
acquired by the Company. The following is a brief description of the Mortgage
Loans, Agency Securities and Contracts expected to be included in the Trust
Funds. If specific information respecting the Mortgage Loans, Agency Securities
and Contracts is not known at the time the related series of Certificates
initially are offered, more general information of the nature described below
will be provided in the Prospectus Supplement, and specific information will be
set forth in a report on Form 8-K to be filed with the Securities and Exchange
Commission within fifteen days after the initial issuance of such Certificates
(the 'Detailed Description'). A copy of the Agreement with respect to each
series of Certificates will be attached to the Form 8-K and will be available
for inspection at the corporate trust office of the Trustee specified in the
related Prospectus Supplement. A schedule of the Agency Securities, Mortgage
Loans or Contracts, as appropriate, relating to such series, will be attached to
the Agreement delivered to the Trustee upon delivery of the Certificates.
 
THE MORTGAGE LOANS
 
     Description of the Mortgage Loans.  The Mortgage Loans will be evidenced by
promissory notes (the 'Mortgage Notes') secured by mortgages or deeds of trust
(the 'Mortgages') creating first liens, or, in the case of Home Equity Loans (as
defined below), first or second liens, on residential properties (the 'Mortgaged
Properties') or first liens on long-term leases of such properties. Such
Mortgage Loans will be within the broad classification of one- to four-family
mortgage loans, defined generally as loans secured by mortgages on residences
containing one to four dwelling units, loans secured by mortgages on condominium
units and loans secured by mortgages on leasehold estates. The Mortgage Loans
may include cooperative apartment loans ('Cooperative Loans') secured by
security interests in shares issued by private, non-profit, cooperative housing
corporations ('Cooperatives') and in the related proprietary leases or occupancy
agreements granting exclusive rights to occupy specific dwelling units in such
Cooperatives' buildings. The Mortgage Loans will be 'conventional' mortgage
loans; i.e., they will not be insured or guaranteed by any governmental agency.
The Mortgaged Properties securing the Mortgage Loans will be located in one or
more states in the United States, the District of Columbia, Puerto Rico, Guam,
the U.S. Virgin Islands and other territories of the United States and may
include investment properties and vacation and second homes. Each Mortgage Loan
will be selected by the Company for inclusion in a Trust Fund from among those
originated or acquired by the Company in the ordinary course of the Company's
mortgage lending activities, including newly originated loans.
 
     Unless otherwise specified in the Prospectus Supplement, the Mortgage Loans
(other than Home Equity Loans) will have initial principal balances of not less
than the minimum amount permitted under the laws of the state where the related
Mortgaged Property is located and not more than $1,000,000 and will have
original maturities of 10 to 30 years. Unless otherwise specified in the
Prospectus Supplement, principal and interest on
 
                                       19

<PAGE>

the Mortgage Loans (other than Home Equity Loans that employ the simple interest
method) will be payable on the first day of each month, and interest will be
calculated based on a 360-day year of twelve 30-day months. When a full payment
of principal is made on a Mortgage Loan during a month, the mortgagor is charged
interest only on the days of the month actually elapsed up to the date of such
prepayment, at a daily interest rate that is applied to the principal amount of
the loan so prepaid. When a partial prepayment of principal is made on a
Mortgage Loan (other than a Home Equity Loan) during a month, the mortgagor
generally will not be charged interest on the amount of the partial prepayment
during the month in which such prepayment is made.
 
     If specified in the Prospectus Supplement, all or a portion of the Mortgage
Loans included in a Trust Fund may be closed-end home equity loans secured by
first or second liens on Mortgaged Properties ('Home Equity Loans'). The Home
Equity Loan portion of any Trust Fund may consist of loans secured by first
liens or by first and second liens. Unless otherwise specified in the Prospectus
Supplement, Home Equity Loans will have initial principal balances within the
ranges permitted under the laws of the state where the related Mortgaged
Property is located and will have original maturities of 5 to 30 years. Interest
on Home Equity Loans will be calculated on the basis of either a 360-day year or
365-day year, depending on applicable state law. As specified in the Prospectus
Supplement, interest on Home Equity Loans will accrue on a simple interest basis
or on a fully-amortizing basis. Under the simple interest method, regularly
scheduled payments (which are based on the amortization of the loan over a
series of equal monthly payments) and other payments are applied first to
interest accrued to the date payment is received, then to principal. See 'Yield,
Maturity and Weighted Average Life Considerations.'
 
     The Company also originates and acquires 'balloon loans.' If specified in
the Prospectus Supplement, the Home Equity Loans may include balloon loans. Such
loans may be originated with a stated maturity of 15 years but may on occasion
be originated with a shorter stated maturity. Notwithstanding the 15-year
maturity, level monthly payments on such a balloon loan would typically be
calculated on an amortization schedule based on a 30-year maturity. As a result,
upon the maturity of a balloon loan, the borrower will be required to make a
'balloon' payment, which will be significantly larger than such borrower's
previous monthly payments. The ability of such borrower to repay the balloon
loan at maturity frequently will depend on such borrower's ability to refinance
the loan.
 
     The Mortgage Loans may be purchase-money loans used by the borrowers to
acquire the related Mortgaged Properties or may be loans used by the borrowers
to refinance existing mortgage loans. A refinancing may be a 'cash-out' loan,
the Principal Balance of which exceeds the sum of the amount needed to repay the
loan being refinanced plus closing costs and 'points' associated with the new
mortgage loan, or may be a 'non-cash-out' or 'rate-and-term' refinancing in
which the borrower refinances the loan solely to change the interest rate or
term of the mortgage loan.
 
     The payment terms of the Mortgage Loans to be included in a Trust Fund will
be described in the related Prospectus Supplement and may include any of the
following features or combinations thereof or other features described in the
related Prospectus Supplement:
 
          (a) Interest may be payable at a fixed rate, a rate adjustable from
     time to time in relation to an index, a rate that is fixed for a period of
     time or under certain circumstances and is followed by an adjustable rate,
     a rate that otherwise varies from time to time, or a rate that is
     convertible from an adjustable rate to a fixed rate. Changes to an
     adjustable rate may be subject to periodic limitations, maximum rates,
     minimum rates or a combination of such limitations. Accrued interest may be
     deferred and added to the principal of a loan for such periods and under
     such circumstances as may be specified in the related Prospectus
     Supplement. Mortgage Loans may provide for the payment of interest at a
     rate lower than the specified mortgage rate for a period of time or for the
     life of the loan with the amount of any difference contributed from funds
     supplied by the seller of the mortgaged property or another source.
 
          (b) Principal may be payable on a level debt service basis to fully
     amortize the loan over its term, may be calculated on the basis of an
     amortization schedule that is significantly longer than the original term
     to maturity or on an interest rate that is different from the interest rate
     on the Mortgage Loan or may not be amortized during all or a portion of the
     original term. Payment of all or a substantial portion of the principal may
     be due on maturity. Principal may include interest that has been deferred
     and added to the principal
 
                                       20

<PAGE>

     balance of the Mortgage Loan. In the case of Home Equity Loans, payments
     are applied first to interest accrued to the date payment is received, then
     to principal.
 
          (c) Monthly payments of principal and interest may be fixed for the
     life of the loan, may increase over a specified period of time or may
     change from period to period. Mortgage Loans may include limits on periodic
     increases or decreases in the amount of monthly payments and may include
     maximum or minimum amounts of monthly payments.
 
          (d) Prepayments of principal may be subject to a prepayment fee, which
     may be fixed for the life of the loan or may decline over time, and may be
     prohibited for the life of the loan or for certain periods ('lockout
     periods'). Certain loans may permit prepayments after expiration of the
     applicable lockout period and may require the payment of a prepayment fee
     in connection with any such subsequent prepayment. Other loans may permit
     prepayments without payment of a fee unless the prepayment occurs during
     specified time periods. The loans may include 'due-on-sale' clauses which
     permit the mortgagee to demand payment of the entire mortgage loan in
     connection with the sale or certain transfers of the related mortgaged
     property. Other Mortgage Loans may be assumable by persons meeting the then
     applicable underwriting standards of the Company.
 
     It is anticipated that the Mortgage Loans will consist primarily of
Mortgage Loans secured by Mortgaged Properties determined by the Company to be
the primary residences of the borrowers. The basis for such determination will
be the making of a representation by the borrower that he or she intends to use
the underlying property as his or her primary residence.
 
     The Prospectus Supplement will contain information regarding the interest
rates (the 'Mortgage Rates'), the average Principal Balance and the aggregate
Principal Balance of the Mortgage Loans as of the related Cut-off Date, the
years of origination and original principal balances and the original
loan-to-value ratios of the Mortgage Loans. The 'Principal Balance' of any
Mortgage Loan (other than a Home Equity Loan) will be the unpaid principal
balance of such Mortgage Loan as of the Cut-off Date, after deducting any
principal payments due on or before the Cut-off Date, reduced by all principal
payments, including principal payments advanced pursuant to the Agreement,
previously distributed to Certificateholders with respect to such Mortgage Loan
and reported to them as allocable to principal. The 'Principal Balance' of any
Home Equity Loan as of the Cut-off Date will be the unpaid principal balance
thereof as of such date. The Prospectus Supplement will also contain information
regarding the geographic distribution and nature of the Mortgaged Properties
securing the Mortgage Loans.
 
     Unless otherwise specified in the Prospectus Supplement, the loan-to-value
ratio of any Mortgage Loan will be determined by dividing the amount of such
loan (without taking into account any secondary financing) by the 'Original
Value' of the related Mortgaged Property. The principal amount of the 'loan,'
for purposes of computation of the loan-to-value ratio of any Mortgage Loan,
will include any part of an origination fee that has been financed. The
'Original Value' of a Mortgaged Property is (a) in the case of a purchase money
Mortgage Loan, the lesser of (i) the value of the Mortgaged Property, based on
an appraisal thereof acceptable to the Company, and (ii) the selling price, and
(b) in the case of any non-purchase money Mortgage Loan, the value of the
Mortgaged Property, based on either (i) the appraised value determined in an
appraisal obtained at the time of refinancing or origination of such loan or
(ii) if no such appraisal has been obtained, the value of the related Mortgaged
Property which value generally will be supported by either (1) a representation
by the related correspondent as to such value, (2) a broker's price opinion,
automated appraisal, drive-by appraisal or other certification of value, (3) an
appraisal obtained within twelve months prior to such refinancing or origination
or (4) the sales price, if the Mortgaged Property was purchased within the
previous twelve months.
 
     There can be no assurance that the Original Value will reflect actual real
estate values during the term of a Mortgage Loan. If the residential real estate
market should experience an overall decline in property values such that the
outstanding principal balances of the Mortgage Loans become equal to or greater
than the values of the Mortgaged Properties, the actual rates of delinquencies,
foreclosures and losses could be significantly higher than those now generally
experienced in the mortgage lending industry. In addition, adverse economic
conditions (which may or may not affect real estate values) may affect the
timely and ultimate payment by mortgagors of scheduled payments of principal and
interest on the Mortgage Loans and, accordingly, the actual rates of
delinquencies, foreclosures and losses with respect to the Mortgage Loans.
 
                                       21

<PAGE>

     In the case of seasoned Mortgage Loans acquired by the Company, the values
used in calculating loan-to-value ratios may no longer be accurate valuations of
the Mortgaged Properties. Under the Company's underwriting standards, a
correspondent or other third-party seller is generally permitted to provide
secondary financing (or subordinate existing secondary financing) to, or obtain
such secondary financing for, a mortgagor contemporaneously with the origination
of a Mortgage Loan, provided that the combined loan-to-value ratio does not
exceed the Company's underwriting guidelines for the specific loan program.
Secondary financing is readily available and may be obtained by a Mortgagor from
a variety of lenders, including the related correspondent or other third-party
seller, at any time (including at origination of the Mortgage Loan).
 
     Loan Production Sources.  The Company acquires the mortgage loans that may
underlie a series of Certificates by purchasing mortgage loans originated or
otherwise acquired by its approved correspondents or other approved third
parties, by closing mortgage loans originated through loan brokers eligible to
refer applications to the Company, by refinancing mortgage loans in its own
servicing portfolio and by originating loans with borrowers who currently have
mortgage loans serviced by the Company. The Company may purchase loans from
correspondents or other third parties either for contemporaneous delivery or for
delivery in one or more pools on a 'forward-delivery' basis at some future date.
 
     The Company's mortgage loan correspondents and loan brokers are certain
lending institutions that satisfy the Company's financial and operational
criteria, demonstrate experience in originating mortgage loans and follow the
Company's loan underwriting standards or other loan underwriting standards
approved by the Company. Except as described below, the Company generally
reviews each mortgage loan for compliance with its underwriting standards before
accepting delivery from its correspondents. Under the Company's 'delegated
underwriting' program, however, the Company delegates all underwriting functions
to certain approved correspondents. In such cases, the Company will not perform
any underwriting functions prior to its acquisition of the loans, instead
relying on the representations and warranties of its correspondents and on
post-purchase reviews of the material loan documents and samplings of the loans
for compliance with applicable underwriting standards. Mortgage loans originated
by a correspondent may be closed in the name of such correspondent and acquired
by the Company or, to a lesser extent, closed in the name of the Company.
Mortgage loans originated by the Company through loan brokers are generally
underwritten by the Company, processed by the broker on behalf of the Company as
well as by the Company, and closed in the Company's name.
 
     The Company purchases portfolios of loans from other third-party sellers in
negotiated transactions. Before making such purchases, the Company generally
determines that such sellers satisfy the Company's financial and operational
criteria, have demonstrated experience in originating or acquiring single-family
mortgage loans and have followed loan underwriting standards acceptable to the
Company.
 
     Loans acquired from the Company's correspondents and brokers will generally
have been recently originated. Loans acquired in bulk whole loan sales from
correspondents and from other third parties in negotiated transactions are more
likely to include loans that have been outstanding for a period of time. The
Prospectus Supplement will provide information with respect to the origination
dates and the remaining terms to maturity of the Mortgage Loans included in the
related Trust Fund.
 
     Loan Underwriting Policies.  The Mortgage Loans underlying a series of
Certificates will generally have been originated in accordance with the
underwriting standards described below. In the case of mortgage loans sold to
the Company by certain approved correspondents who have exhibited strong
financial performance and have delinquency and foreclosure rates with respect to
their conventional loan portfolios acceptable to the Company, the Company may
vary some of the generally acceptable underwriting standards and program
criteria described herein, such as required documentation levels, loan-to-value
ratios and the mortgagors' debt and income ratios. If a material portion of the
Mortgage Loans included in any Trust Fund has been originated or acquired by the
Company under materially different standards from those described herein, the
related Prospectus Supplement will describe such standards.
 
     The underwriting standards applied by the Company in acquiring or
originating mortgage loans are intended to evaluate the prospective borrower's
credit standing and ability to repay the loan and the value and adequacy of the
underlying mortgaged property as collateral for the loan. In applying these
standards, the Company must be satisfied that the value of the property being
financed supports, and will continue to support, the outstanding loan balance.
The Company may require that mortgage loans that are not eligible for purchase
by FHLMC or FNMA
 
                                       22

<PAGE>

be underwritten by a nationally-recognized third-party underwriter approved by
the Company. In such cases (as well as in cases of loans originated under the
Company's delegated underwriting program, as described above in '--Loan
Production Sources' and in the case of loans sold by certain third-party
sellers), the determination of a mortgage loan's compliance with the
underwriting standards described herein will be made by the related underwriter.
 
     In acquiring or originating residential mortgage loans, the Company follows
procedures established to comply with applicable federal and state laws and
regulations. In applying for a loan, a prospective borrower is generally
required to supply detailed information for a loan application designed to
provide pertinent credit information about the prospective mortgagor, the
property to be purchased or that will serve as the security for the loan, and
the type of loan desired. The application generally includes a description of
the prospective borrower's assets and liabilities and income and expenses. The
Company also usually requires a credit report that summarizes the prospective
mortgagor's credit with merchants and lenders and, in the case of second-lien
Home Equity Loans, a written or telephonic verification of the first mortgage
balance and payment history. The Company may, as part of its overall evaluation
of the prospective borrower's creditworthiness, use a credit scoring model
and/or mortgage scoring model to evaluate in a statistical manner the expected
performance of a mortgage loan based on the pertinent credit information
concerning the prospective mortgagor supplied through national credit bureaus,
certain other information provided by the prospective borrower and an assessment
of specific mortgage loan characteristics, including loan-to-value ratio, type
of loan product and geographic location. The Company expects to place greater
reliance on a prospective mortgagor's credit and/or mortgage scores in the
underwriting process.
 
     The extensiveness of the documentation that the Company requires in
connection with the verification of a prospective borrower's employment status,
income, assets and adequacy of funds to close varies from full documentation to
limited documentation, as further described below. The Company may raise or
lower its documentation requirements depending upon such factors as the net
worth and financial performance of the correspondent or other third party
selling the mortgage loans and the performance of such correspondent's mortgage
loan portfolio. In addition, the Company will take into account the performance
of those mortgage loans previously sold to it by such correspondent or third
party seller, as well as factors particular to a mortgage loan such as the
credit history of the individual borrower, the loan-to-value ratio of the loan
and the prospective mortgagor's credit and/or mortgage scores.
 
     Under a typical full or alternative documentation loan approval process,
verification of the prospective borrower's employment status and current salary
is obtained from records prepared by the employer or by other means satisfactory
to the Company. Each prospective borrower who is self-employed is generally
required to submit a copy of his or her federal income tax returns. In the case
of purchase money mortgage loans, the Company also generally requires
verification that the borrower has adequate funds to close the mortgage loan. A
prospective borrower may be eligible for a loan approval process permitting
limited documentation if the amount of the Mortgage Loan, together with, in the
case of a second-lien Home Equity Loan, the unpaid principal balance of the
senior mortgage loan, would not exceed a certain percentage of the Original
Value of the related Mortgaged Property and certain other requirements are
satisfied. The limited documentation process differs from the full or
alternative documentation process primarily in that it does not require a
verification of the borrower's employment, income and/or assets or, in certain
circumstances, verification of funds to close, and generally places greater
reliance on a prospective mortgagor's credit and/or mortgage scores. Certain of
the Company's Programs that utilize the limited documentation loan approval
process are described below. A loan application and credit report and, when
applicable, a mortgage or rental reference are usually obtained. A current
appraisal is also generally obtained, except as described below.
 
     Certain of the Mortgage Loans (other than Home Equity Loans) may have been
originated or acquired under the Company's Relocation Loan program. Under the
Relocation Loan program, the related borrower must be a relocating employee, the
Relocation Loan must be secured by the related borrower's primary residence and
the employer generally must have paid all or a substantial portion of the
relocating employee's closing costs. A relocating employee may be either an
employee transferring from one location to another, a new hire or a participant
in a group relocation. Loan documentation for a Relocation Loan will generally
be similar to that required for other mortgage loans originated or acquired by
the Company, except with respect to the treatment of the income of the spouse of
the relocating employee. If the spouse confirms an intention to seek employment
at
 
                                       23

<PAGE>

the new location, under certain circumstances, a portion of such spouse's income
at the old location may be counted for qualifying for a Relocation Loan.
Generally, for all Relocation Loans, the spouse's income at the old
location must also be verified.
 
     Certain of the Mortgage Loans (other than Home Equity Loans) may have been
originated or acquired under the Company's No Income Verification program,
pursuant to which the Company generally will not verify any self-employment or
other income of the borrower. Unless otherwise specified in the Prospectus
Supplement, in order to qualify for the No Income Verification program, the
related borrower generally must have (i) no delinquent mortgage or rental
payments during the preceding 24 months, (ii) a minimum of two months'
principal, interest, tax and insurance payments in reserves after the closing of
the related loan and (iii) acceptable credit scores.
 
     Certain of the Mortgage Loans (other than Home Equity Loans) may have been
originated or acquired under the Company's No Ratio program, pursuant to which
the Company will verify the assets of the borrower but will not require the
borrower to either complete the income section on the loan application or
satisfy any qualifying housing to income or debt to income ratios. Unless
otherwise specified in the Prospectus Supplement, in order to qualify for the No
Ratio program, the related borrower generally must have (i) no delinquent
mortgage or rental payments during the preceding 24 months, (ii) a minimum of
six months' principal, interest, tax and insurance payments in reserves after
the closing of the related loan and (iii) strong credit scores.
 
     Certain of the Mortgage Loans (other than Home Equity Loans) may have been
originated or acquired under the Company's No Income No Asset Verification
program, pursuant to which the Company will not verify any income or assets of
the borrower. This program is only available to certain approved correspondents
who have exhibited strong financial performance and have delinquency and
foreclosure rates with respect to their conventional loan portfolios acceptable
to the Company. Unless otherwise specified in the Prospectus Supplement, in
order to qualify for the No Income No Asset Verification program, the related
borrower generally must have (i) no delinquent mortgage or rental payments
during the preceding 24 months, (ii) a minimum of six months' principal,
interest, tax and insurance payments in reserves after the closing of the
related loan and (iii) strong credit scores.
 
     Certain of the Mortgage Loans (other than Home Equity Loans) may have been
originated or acquired under the Company's Enhanced Streamlined Refinance
program. Under this program, if the Company is currently the servicer of a
borrower's first-lien mortgage loan, the Company may originate a rate-and-term
(rather than 'cash-out') refinance loan which pays off the existing mortgage
loan so long as the existing mortgage loan is current, and the borrower has no
more than one 30-day delinquent mortgage payment on the existing mortgage loan
during the preceding 12 months. Under this program the Company generally will
not verify any income or assets of the borrower, and no new appraisal will be
required. The Company will, however, represent and warrant in the Agreement that
the value of the related Mortgaged Property is no less than the value
established at the time the existing mortgage loan was originated.
 
     Upon receipt of appropriate verification, where required, the credit
report, and, in certain cases, the prospective borrower's credit score or
mortgage score, the Company (or the delegated underwriter) makes a determination
as to whether the prospective borrower has sufficient monthly income to meet the
monthly payment obligations on the proposed mortgage loan (including real estate
taxes and insurance on the subject property), plus other financial obligations
not expected to be fully repaid within the next ten months and normal monthly
living expenses. In the case of a mortgage loan with more than one borrower
where all the borrowers intend to occupy the mortgaged property, the combined
gross income of all such borrowers is considered for the above computation.
However, the Company may depart from a strict application of its guidelines in
favor of other credit considerations, and may permit such a departure in the
case of loans acquired from certain of its approved correspondents and other
third-party sellers. In its evaluation of seasoned mortgage loans which have 24
or more months of payment experience, the Company generally places greater
emphasis on payment history and may take into account market and other economic
trends while placing less emphasis on underwriting factors generally applied to
newly originated mortgage loans.
 
     In assessing the adequacy of properties as collateral for mortgage loans,
an independent appraisal is generally used with respect to each property
considered for financing. Such appraisal generally entails physical inspection
of the property as well as a verification that the property is in good
condition. The appraiser estimates
 
                                       24

<PAGE>

the value of the property based on market values of comparable homes and, to a
lesser extent, the cost of replacing the property.
 
     No assurance can be given that values of the Mortgaged Properties have
remained or will remain at the levels which existed on the dates of appraisal of
such Mortgaged Properties. The appraisal of any Mortgaged Property reflects the
individual appraiser's judgment as to value, based on the market value of
comparable homes sold within the recent past in comparable nearby locations and
on the estimated replacement cost. Because of the unique locations and special
features of certain Mortgaged Properties, identifying comparable properties in
nearby locations may be difficult. The appraised values of such Mortgaged
Properties will be based to a greater extent on adjustments made by the
appraisers to the appraised values of reasonably similar properties. If
residential real estate values generally or in particular geographic areas
decline such that the outstanding principal balances of the Mortgage Loans and
any secondary financing on the Mortgaged Properties become equal to or greater
than the values of such Mortgaged Properties, the actual rates of delinquencies,
foreclosures and losses could be significantly higher than those now generally
experienced in the mortgage lending industry and those now experienced on the
Company's servicing portfolios. To the extent that such losses are not covered
by any of the credit enhancement features described herein, they will be borne
by the holders of the related Certificates.
 
     The Company may not require a current appraisal in connection with certain
purchase money mortgage loans, certain refinancings and certain home equity loan
programs. The percentage of Mortgage Loans representing such purchase money
mortgage loans, refinancings and home equity loans (by Principal Balance of all
of the Mortgage Loans included in the related Trust Fund as of the Cut-off Date)
where an appraisal dated within the past year has not been obtained will be
specified in the related Prospectus Supplement, if material. In addition, the
percentage of Mortgage Loans in respect of which no appraisal has been obtained
will be specified in the related Prospectus Supplement, if material. Generally,
appraisals in connection with a Home Equity Loan will be dated within six months
prior to the origination of such mortgage loan. In the event that there has been
a decline in value of the Mortgaged Properties with respect to Mortgage Loans
originated without current appraisals, the use of other methods in establishing
the 'Original Value' of a Mortgaged Property and in calculating the
loan-to-value ratios of such Mortgage Loans may result in substantially lower
loan-to-value ratios than would be the case if new appraisals were obtained at
the time of refinancing. This may be particularly true in geographic areas where
there has been a substantial decline in property values since the date of
origination of the refinanced mortgage loans. In addition, the use of methods
other than a current appraisal to establish the Original Value of a Mortgaged
Property (e.g., a broker's price opinion, an automated appraisal or a drive-by
appraisal) may not provide as thorough a review or as accurate an assessment of
the value of the related Mortgaged Property. In certain circumstances, the
Company may require a current appraisal where, as a result of deterioration in
conditions in the local real estate market since the date of origination of the
refinanced mortgage loan, there is a greater probability that the original
appraisal may not accurately reflect the current market value of the Mortgaged
Property.
 
     Generally, mortgage loans that the Company originates or acquires do not
have loan-to-value ratios in excess of 95% of the Original Value. In certain
cases, secondary financing (or subordination of existing secondary financing) is
permitted, provided that the combined loan-to-value ratio does not exceed the
Company's underwriting guidelines for the specific loan program. Unless
otherwise specified in the Prospectus Supplement, mortgage loans (other than
Home Equity Loans) that the Company acquires or originates which have an
original principal amount exceeding 80% of Original Value will have private
mortgage insurance. The Company generally requires such coverage to continue
until the loan-to-value ratio is 80% or less. See 'Servicing of the Mortgage
Loans and Contracts--Private Mortgage Insurance' below. The Company does not
require private mortgage insurance with respect to Home Equity Loans.
 
     If Home Equity Loans constitute a material portion of the Mortgage Loans
included in a Trust Fund with respect to a series of Certificates, the related
Prospectus Supplement will describe in further detail the underwriting standards
applicable to the Home Equity Loans.
 
                                       25

<PAGE>

THE AGENCY SECURITIES
 
     Government National Mortgage Association.  GNMA is a wholly-owned corporate
instrumentality of the United States within the United States Department of
Housing and Urban Development. Section 306(g) of Title III of the National
Housing Act of 1934, as amended (the 'Housing Act'), authorizes GNMA to
guarantee the timely payment of the principal of and interest on certificates
which represent an interest in a pool of mortgage loans insured by FHA under the
Housing Act, or Title V of the Housing Act of 1949 ('FHA Loans'), or partially
guaranteed by the VA under the Servicemen's Readjustment Act of 1944, as
amended, or Chapter 37 of Title 38, United States Code ('VA Loans').
 
     Section 306(g) of the Housing Act provides that 'the full faith and credit
of the United States is pledged to the payment of all amounts which may be
required to be paid under any guarantee under this subsection.' In order to meet
its obligations under any such guarantee, GNMA may, under Section 306(d) of the
Housing Act, borrow from the United States Treasury in an amount which is at any
time sufficient to enable GNMA, with no limitations as to amount, to perform its
obligations under its guarantee.
 
     GNMA Certificates.  Each GNMA Certificate relating to a series (which may
be issued under either the GNMA I program or the GNMA II program) will be a
'fully modified pass-through' mortgage-backed certificate issued and serviced by
a mortgage banking company or other financial concern ('GNMA Issuer') approved
by GNMA or approved by FNMA as a seller-servicer of FHA Loans and/or VA Loans.
The mortgage loans underlying the GNMA Certificates will consist of FHA Loans
and/or VA Loans. GNMA will approve the issuance of each such GNMA Certificate in
accordance with a guarantee agreement (a 'Guaranty Agreement') between GNMA and
the GNMA Issuer. Pursuant to its Guaranty Agreement, a GNMA Issuer will be
required to advance its own funds in order to make timely payments of all
amounts due on each such GNMA Certificate, even if the payments received by the
GNMA Issuer on the FHA Loans or VA Loans underlying each such GNMA Certificate
are less than the amounts due on each such GNMA Certificate.
 
     The full and timely payment of principal of and interest on each GNMA
Certificate will be guaranteed by GNMA, which obligation is backed by the full
faith and credit of the United States. Each such GNMA Certificate will have an
original maturity of not more than 30 years (but may have original maturities of
substantially less than 30 years). Each such GNMA Certificate will be based on
and backed by a pool of FHA Loans or VA Loans secured by one- to four-family
residential property and will provide for the payment by or on behalf of the
GNMA Issuer to the registered holder of such GNMA Certificate of scheduled
monthly payments of principal and interest equal to the registered holder's
proportionate interest in the aggregate amount of the monthly principal and
interest payment on each FHA Loan or VA Loan underlying such GNMA Certificate,
less the applicable servicing and guarantee fee which together equal the
difference between the interest on the FHA Loan or VA Loan and the pass-through
rate on the GNMA Certificate. In addition, each payment will include
proportionate pass-through payments of any prepayments of principal on the FHA
Loans or VA Loans underlying such GNMA Certificate and liquidation proceeds in
the event of a foreclosure or other disposition of any such FHA Loans or VA
Loans.
 
     If a GNMA Issuer is unable to make the payments on a GNMA Certificate as it
becomes due, it must promptly notify GNMA and request GNMA to make such payment.
Upon notification and request, GNMA will make such payments directly to the
registered holder of such GNMA Certificate. In the event no payment is made by a
GNMA Issuer and the GNMA Issuer fails to notify and request GNMA to make such
payment, the holder of such GNMA Certificate will have recourse only against
GNMA to obtain such payment. The Trustee or its nominee, as registered holder of
the GNMA Certificates relating to a series, will have the right to proceed
directly against GNMA under the terms of the Guaranty Agreements relating to
such GNMA Certificates for any amounts that are not paid when due.
 
     Regular monthly installment payments on each GNMA Certificate relating to a
series will be comprised of interest due as specified on such GNMA Certificate
plus the scheduled principal payments on the FHA Loans or VA Loans underlying
such GNMA Certificate due on the first day of the month in which the scheduled
monthly installment on such GNMA Certificate is due. Such regular monthly
installments on each such GNMA Certificate are required to be paid to the
Trustee as registered holder by the 15th day of each month in the case of a GNMA
I Certificate and are required to be mailed to the Trustee by the 20th day of
each month in the case of a GNMA II Certificate. Any principal prepayments on
any FHA Loans or VA Loans underlying a GNMA
 
                                       26

<PAGE>

Certificate relating to a series or any other early recovery of principal on
such loan will be passed through to the Trustee as the registered holder of such
GNMA Certificate.
 
     GNMA Certificates may be backed by graduated payment mortgage loans or by
'buydown' mortgage loans for which funds will have been provided (and deposited
into escrow accounts) for application to the payment of a portion of the
borrowers' monthly payments during the early years of such mortgage loan.
Payments due the registered holders of GNMA Certificates backed by pools
containing 'buydown' mortgage loans will be computed in the same manner as
payments derived from non-'buydown' GNMA Certificates and will include amounts
to be collected from both the borrower and the related escrow account. The
graduated payment mortgage loans will provide for graduated interest payments
that, during the early years of such mortgage loans, will be less than the
amount of stated interest on such mortgage loans. The interest not so paid will
be added to the principal of such graduated payment mortgage loans and, together
with interest thereon, will be paid in subsequent years. The obligations of GNMA
and of a GNMA Issuer will be the same irrespective of whether the GNMA
Certificates relating to a series of Certificates are backed by graduated
payment mortgage loans or 'buydown' mortgage loans. No statistics comparable to
the FHA's prepayment experience on level payment, non-'buydown' mortgage loans
are available in respect of graduated payment or 'buydown' mortgages. GNMA
Certificates related to a series of Certificates may be held in book-entry form.
 
     Federal Home Loan Mortgage Corporation.  FHLMC is a publicly-held
government-sponsored enterprise created pursuant to Title III of the Emergency
Home Finance Act of 1970, as amended (the 'FHLMC Act'). FHLMC was established
primarily for the purpose of increasing the availability of mortgage credit for
the financing of urgently needed housing. It seeks to provide an enhanced degree
of liquidity for residential mortgage investments primarily by assisting in the
development of secondary markets for conventional mortgages. The principal
activity of FHLMC currently consists of the purchase of first lien conventional
mortgage loans or participation interests in such mortgage loans and the sale of
the mortgage loans or participations so purchased in the form of mortgage
securities, primarily FHLMC Certificates. FHLMC is confined to purchasing, so
far as practicable, mortgage loans that it deems to be of such quality, type and
class as to meet generally the purchase standards imposed by private
institutional mortgage investors.
 
     FHLMC Certificates.  Each FHLMC Certificate represents an undivided
interest in a pool of mortgage loans that may consist of first lien conventional
loans, FHA Loans or VA Loans (a 'FHLMC Certificate group'). FHLMC Certificates
are sold under the terms of a Mortgage Participation Certificate Agreement. A
FHLMC Certificate may be issued under either FHLMC's Cash Program or Guarantor
Program.
 
     Mortgage loans underlying the FHLMC Certificates relating to a series will
consist of residential mortgage loans secured by one- to four-family dwellings.
Each such mortgage loan must meet the applicable standards set forth in the
FHLMC Act. A FHLMC Certificate group may include whole loans, participation
interests in whole loans and undivided interests in whole loans and/or
participations comprising another FHLMC Certificate group. Under the Guarantor
Program any such FHLMC Certificate group may include only whole loans or
participation interests in whole loans.
 
     FHLMC guarantees to each registered holder of a FHLMC Certificate the
timely payment of interest on the underlying mortgage loans to the extent of the
applicable Certificate rate on the registered holder's pro rata share of the
unpaid principal balance outstanding on the underlying mortgage loans in the
FHLMC Certificate group represented by such FHLMC Certificate, whether or not
received. FHLMC also guarantees to each registered holder of a FHLMC Certificate
collection by such holder of all principal on the underlying mortgage loans,
without any offset or deduction, to the extent of such holder's pro rata share
thereof, but does not, except if and to the extent specified in the Prospectus
Supplement for a series, guarantee the timely payment of scheduled principal.
Pursuant to its guarantees, FHLMC indemnifies holders of FHLMC Certificates
against any diminution in principal by reason of charges for property repairs,
maintenance and foreclosure. FHLMC may remit the amount due on account of its
guarantee of collection of principal at any time after default on an underlying
mortgage loan, but not later than (i) 30 days following foreclosure sale, (ii)
30 days following payment of the claim by any mortgage insurer, or (iii) 30 days
following the expiration of any right of redemption, whichever occurs later, but
in any event no later than one year after demand has been made upon the
mortgagor for accelerated payment of principal. In taking actions regarding the
collection of principal after default on the mortgage loans underlying FHLMC
Certificates, including the timing of demand for acceleration, FHLMC
 
                                       27

<PAGE>

reserves the right to exercise its judgment with respect to the mortgage loans
in the same manner as for mortgage loans which it has purchased but not sold.
The length of time necessary for FHLMC to determine that a mortgage loan should
be accelerated varies with the particular circumstances of each mortgagor, and
FHLMC has not adopted standards which require that the demand be made within any
specified period.
 
     FHLMC Certificates are not guaranteed by the United States and do not
constitute debts or obligations of the United States or any instrumentality of
the United States other than FHLMC. The obligations of FHLMC under its guarantee
are obligations solely of FHLMC and are not backed by, nor entitled to, the full
faith and credit of the United States. If FHLMC were unable to satisfy such
obligations, distributions to holders of FHLMC Certificates would consist solely
of payments and other recoveries on the underlying mortgage loans and,
accordingly, monthly distributions to holders of FHLMC Certificates would be
affected by delinquent payments and defaults on such mortgage loans.
 
     Registered holders of FHLMC Certificates are entitled to receive their
monthly pro rata share of all principal payments on the underlying mortgage
loans received by FHLMC, including any scheduled principal payments, full and
partial repayments of principal and principal received by FHLMC by virtue of
condemnation, insurance, liquidation or foreclosure, and repurchases of the
mortgage loans by FHLMC or the seller thereof. FHLMC is required to remit each
registered FHLMC Certificateholder's pro rata share of principal payments on the
underlying mortgage loans, interest at the FHLMC pass-through rate and any other
sums such as prepayment fees, within 60 days of the date on which such payments
are deemed to have been received by FHLMC.
 
     Under FHLMC's Cash Program, interest rates on the mortgage loans underlying
a FHLMC Certificate may exceed the pass-through rate on the FHLMC Certificate by
50 to 100 basis points. Under FHLMC's Guarantor Program, interest rates on the
mortgage loans underlying a FHLMC Certificate may range from the pass-through
rate (plus a minimum servicing fee) to 250 basis points higher than such rate.
 
     FHLMC Certificates duly presented for registration of ownership on or
before the last business day of a month are registered effective as of the first
day of the month. The first remittance to a registered holder of a FHLMC
Certificate will be distributed so as to be received normally by the 15th day of
the month following the month in which the purchaser became a registered holder
of the FHLMC Certificates. Thereafter, such remittance will be distributed
monthly to the registered holder so as to be received normally by the 15th day
of each month. The Federal Reserve Bank of New York maintains book-entry
accounts with respect to FHLMC Certificates sold by FHLMC on or after January 2,
1985, and makes payments of principal and interest each month to the registered
holders thereof in accordance with such holders' instructions.
 
     Federal National Mortgage Association.  FNMA is a federally-chartered and
privately-owned corporation organized and existing under the Federal National
Mortgage Association Charter Act (the 'Charter Act'). FNMA was originally
established in 1938 as a United States government agency to provide supplemental
liquidity to the mortgage market and was transformed into a stockholder-owned
and privately-managed corporation by legislation enacted in 1968.
 
     FNMA provides funds to the mortgage market primarily by purchasing mortgage
loans from lenders, thereby replenishing their funds for additional lending.
FNMA acquires funds to purchase mortgage loans from many capital market
investors that may not ordinarily invest in mortgages, thereby expanding the
total amount of funds available for housing. Operating nationwide, FNMA helps to
redistribute mortgage funds from capital-surplus to capital-short areas.
 
     FNMA Certificates.  FNMA Certificates are Guaranteed Mortgage Pass-Through
Certificates representing fractional undivided interests in a pool of mortgage
loans formed by FNMA. Each mortgage loan must meet the applicable standards of
the FNMA purchase program. Mortgage loans comprising a pool are either provided
by FNMA from its own portfolio or purchased pursuant to the criteria of the FNMA
purchase program.
 
     Mortgage loans underlying FNMA Certificates relating to a series will
consist of conventional mortgage loans, FHA Loans or VA Loans. Original
maturities of substantially all of the conventional, level payment mortgage
loans underlying a FNMA Certificate are expected to be between either 8 to 15
years or 20 to 30 years. The original maturities of substantially all of the
fixed rate level payment FHA Loans or VA Loans are expected to be 30 years.
 
                                       28

<PAGE>

     Mortgage loans underlying a FNMA Certificate may have annual interest rates
that vary by as much as two percentage points from each other. The rate of
interest payable on a FNMA Certificate is equal to the lowest interest rate of
any mortgage loan in the related pool, less a specified minimum annual
percentage representing servicing compensation and FNMA's guaranty fee. Under a
regular servicing option (pursuant to which the mortgagee or other servicer
assumes the entire risk of foreclosure losses), the annual interest rates on the
mortgage loans underlying a FNMA Certificate will be between 50 basis points and
250 basis points greater than in its annual pass-through rate and under a
special servicing option (pursuant to which FNMA assumes the entire risk for
foreclosure losses), the annual interest rates on the mortgage loans underlying
a FNMA Certificate will generally be between 55 basis points and 255 basis
points greater than the annual FNMA Certificate pass-through rate. If specified
in the Prospectus Supplement, FNMA Certificates may be backed by adjustable rate
mortgages.
 
     FNMA guarantees to each registered holder of a FNMA Certificate that it
will distribute amounts representing such holder's proportionate share of
scheduled principal and interest payments at the applicable pass-through rate
provided for by such FNMA Certificate on the underlying mortgage loans, whether
or not received, and such holder's proportionate share of the full principal
amount of any foreclosed or other finally liquidated mortgage loan, whether or
not such principal amount is actually recovered. The obligations of FNMA under
its guarantees are obligations solely of FNMA and are not backed by, nor
entitled to, the full faith and credit of the United States. Although the
Secretary of the Treasury of the United States has discretionary authority to
lend FNMA up to $2.25 billion outstanding at any time, neither the United States
nor any agency thereof is obligated to finance FNMA's operations or to assist
FNMA in any other manner. If FNMA were unable to satisfy its obligations,
distributions to holders of FNMA Certificates would consist solely of payments
and other recoveries on the underlying mortgage loans and, accordingly, monthly
distributions to holders of FNMA Certificates would be affected by delinquent
payments and defaults on such mortgage loans.
 
     FNMA Certificates evidencing interests in pools of mortgage loans formed on
or after May 1, 1985 (other than FNMA Certificates backed by pools containing
graduated payment mortgage loans or mortgage loans secured by multifamily
projects) are available in book-entry form only. Distributions of principal and
interest on each FNMA Certificate will be made by FNMA on the 25th day of each
month to the persons in whose name the FNMA Certificate is entered in the books
of the Federal Reserve Banks (or registered on the FNMA Certificate register in
the case of fully registered FNMA Certificates) as of the close of business on
the last day of the preceding month. With respect to FNMA Certificates issued in
book-entry form, distributions thereon will be made by wire, and with respect to
fully registered FNMA Certificates, distributions thereon will be made by check.
 
     Stripped Mortgage-Backed Securities.  Agency Securities may consist of one
or more stripped mortgage-backed securities, each as described herein and in the
related Prospectus Supplement. Each such Agency Security will represent an
undivided interest in all or part of either the principal distributions (but not
the interest distributions) or the interest distributions (but not the principal
distributions), or in some specified portion of the principal and interest
distributions (but not all of such distributions) on certain FHLMC, FNMA or GNMA
Certificates. The underlying securities will be held under a trust agreement by
FHLMC, FNMA or GNMA each as trustee, or by another trustee named in the related
Prospectus Supplement. FHLMC, FNMA or GNMA will guarantee each stripped Agency
Security to the same extent as such entity guarantees the underlying securities
backing such stripped Agency Security, unless otherwise specified in the related
Prospectus Supplement.
 
CONTRACTS
 
     Each pool of Contracts with respect to a series of Certificates (the
'Contract Pool') will consist of manufactured housing conditional sales
contracts and installment loan agreements or participation interests therein
(collectively, the 'Contracts') originated by the Company or acquired from one
or more manufactured housing dealers in the ordinary course of business. The
Contracts may be conventional manufactured housing contracts or contracts
insured by the FHA or partially guaranteed by the VA. Each Contract is secured
by a Manufactured Home (as defined below). Unless otherwise specified in the
Prospectus Supplement, the Contracts will be fully amortizing and will bear
interest at a fixed annual percentage rate ('APR').
 
     The Manufactured Homes securing the Contracts consist of manufactured homes
within the meaning of 42 United States Code, Section 5402(6), which defines a
'manufactured home' as 'a structure, transportable in one
 
                                       29

<PAGE>

or more sections, which, in the traveling mode, is eight body feet or more in
width or forty body feet or more in length, or, when erected on site, is three
hundred twenty or more square feet, and which is built on a permanent chassis
and designed to be used as a dwelling with or without a permanent foundation
when connected to the required utilities, and includes the plumbing, heating,
air-conditioning, and electrical systems contained therein; except that such
term shall include any structure which meets all the requirements of this
paragraph except the size requirements and with respect to which the
manufacturer voluntarily files a certification required by the Secretary of
Housing and Urban Development and complies with the standards established under
this chapter.' Moreover, if an election is made to treat the Trust Fund as a
REMIC as described in 'Certain Federal Income Tax Consequences--REMIC
Certificates', Manufactured Homes will have a minimum of 400 square feet of
living space and a minimum width in excess of 102 inches.
 
     Unless otherwise specified in the related Prospectus Supplement, for
purposes of calculating the loan-to-value ratio of a Contract relating to a new
Manufactured Home, the 'Collateral Value' is no greater than the sum of a fixed
percentage of the list price of the unit actually billed by the manufacturer to
the dealer (exclusive of freight to the dealer site) including 'accessories'
identified in the invoice (the 'Manufacturer's Invoice Price'), plus the actual
cost of any accessories purchased from the dealer, a delivery and set-up
allowance depending on the size of the unit and the cost of state and local
taxes, filing fees and up to three years prepaid hazard insurance premiums.
Unless otherwise specified in the related Prospectus Supplement, the Collateral
Value of a used Manufactured Home is the least of the sales price, the appraised
value, and the National Automobile Dealer's Association book value plus prepaid
taxes and hazard insurance premiums. The appraised value of a Manufactured Home
is based upon the age and condition of the manufactured housing unit and the
quality and condition of the mobile home park in which it is situated, if
applicable.
 
     The related Prospectus Supplement will specify for the Contracts contained
in the related Contract Pool, among other things, the date of origination of the
Contracts; the APRs on the Contracts; the Contract loan-to-value ratios; the
minimum and maximum outstanding principal balances as of the Cut-off Date and
the average outstanding principal balance; the outstanding principal balances of
the Contracts included in the Contract Pool; and the original maturities of the
Contracts and the last maturity date of any Contract.
 
                                 CREDIT SUPPORT
 
GENERAL
 
     Credit support may be provided with respect to one or more classes of a
series of Certificates or with respect to the assets in the related Trust Fund.
Credit support may be in the form of the limited obligation of the Company to
purchase Liquidating Loans, a limited financial guarantee policy, limited
guarantee or other similar instrument (a 'Limited Guarantee') issued by an
entity named in the Prospectus Supplement (the 'Guarantor'), which may be an
affiliate of the Company, the subordination of one or more classes of the
Certificates of such series, the establishment of one or more reserve accounts,
the use of a cross-support feature, use of a pool insurance policy, bankruptcy
bond, special hazard insurance policy, repurchase bond, guaranteed investment
contract or another method of credit support described in the related Prospectus
Supplement, or any combination of the foregoing. Unless otherwise specified in
the Prospectus Supplement, any credit support will not provide protection
against all risks of loss and will not guarantee repayment of the entire
principal balance of the Certificates and interest thereon. If losses occur
which exceed the amount covered by credit support or which are not covered by
the credit support, Certificateholders will bear their allocable share of
deficiencies.
 
     If the Prospectus Supplement for a series provides that an institution
other than the Company will act as sole servicer or master servicer of the
related Mortgage Loans, or that the Company will act as master servicer of such
Mortgage Loans under a Supervisory Master Servicing Arrangement (as defined
under 'Servicing of the Mortgage Loans and Contracts') whereby other servicers
will be directly obligated to perform certain servicing duties, if so specified
in such Prospectus Supplement, such other master servicers or servicers may
provide certain of the credit support arrangements described below in lieu of
the Company. In such event, all references to the Company as servicer under the
description of such credit support set forth below should be read to refer to
such other master servicer or servicers, as the case may be.
 
                                       30

<PAGE>

PURCHASE OF LIQUIDATING LOANS
 
     The Company, as servicer, may be obligated, if and to the extent described
in the Prospectus Supplement, to purchase any Mortgage Loan (a 'Liquidating
Loan') as to which either (i) liquidation proceedings have been commenced and
any equitable or statutory right to reinstate such Mortgage Loan has expired or
(ii) the Company, as servicer, has agreed to accept a deed in lieu of
foreclosure, in each case for a price equal to 100% of the Principal Balance of
such Mortgage Loan plus, unless otherwise specified in the Prospectus
Supplement, one month's interest thereon at the applicable Remittance Rate. Any
such obligation of the Company, as servicer, may be limited as specified in the
Prospectus Supplement. In particular, the aggregate losses from the purchase of
Liquidating Loans that the Company is obligated to bear (measured as the
difference between the aggregate payments made by the Company into the
Certificate Account in respect of Liquidating Loans and the aggregate net
proceeds received by the Company from the disposition of such Loans) may be
limited to an amount specified in the Prospectus Supplement. After this amount
is exhausted, no further Liquidating Loans will be purchased by the Company,
unless such amount has been restored as described below.
 
     If so specified in the Prospectus Supplement, the Company, as servicer,
will have the option (but not the obligation) to purchase any Mortgage Loan as
to which the mortgagor has failed to make unexcused payment in full of three or
more scheduled payments of principal and interest (a 'Delinquent Mortgage
Loan'). Unless otherwise specified in the Prospectus Supplement, any such
purchase will be for a price equal to 100% of the Principal Balance of such
Mortgage Loan plus interest thereon at the applicable Remittance Rate from the
date on which interest was last paid to the first day of the month in which such
purchase price is to be distributed, net of any unreimbursed advances of
principal and interest thereon made by the Company as servicer. The purchase
price for any Delinquent Mortgage Loan will be deposited in the Certificate
Account on the next Deposit Date (as defined under 'Servicing of the Mortgage
Loans and Contracts--Loan Payment Record').
 
     The purchase by the Company, as servicer, of a Delinquent Mortgage Loan may
result in the diminution of the amount of the Company's obligations, as
servicer, to purchase Liquidating Loans, to the extent that net recoveries upon
the liquidation of such Delinquent Mortgage Loan are, or are estimated by the
Company on the date of such purchase to be, less than the sum of the purchase
price for such Delinquent Mortgage Loan and any previous unreimbursed advances
of delinquent installments of principal and interest (adjusted to the related
Remittance Rate) made by the Company with respect thereto. To the extent that
actual recoveries, net of related expenses, upon the final liquidation of such
Delinquent Mortgage Loan differ from the estimated amount thereof, the amount of
the Company's remaining obligation to purchase Liquidating Loans will be
adjusted up or down accordingly. If a Delinquent Mortgage Loan becomes current
after its purchase by the Company, any related decrease in the amount of the
Company's obligation to purchase Liquidating Loans will be reversed in its
entirety. Liquidation proceeds in connection with the liquidation of any
Mortgaged Property may not be deemed for this purpose to include the entire
principal balance of any mortgage loan made by the Company to facilitate such
sale at a rate less than then prevailing market rates. In estimating the net
amount of proceeds recoverable upon the liquidation of any Delinquent Mortgage
Loan, the Company may treat as related liquidation expenses certain costs
associated with the protection of the Mortgaged Property, property sales
expenses and foreclosure or other similar costs.
 
     Following the purchase by the Company of any Liquidating Loan or Delinquent
Mortgage Loan as described above, and the payment by the Company of the purchase
price therefor, the Company will be entitled to receive an assignment by the
Trustee of such Mortgage Loan, and the Company will thereafter own such Mortgage
Loan free of any further obligation to the Trustee or the Certificateholders
with respect thereto.
 
LIMITED GUARANTEE OF THE GUARANTOR
 
     If specified in the Prospectus Supplement, certain obligations of the
Company, as servicer, under the related Agreement may be covered by a Limited
Guarantee, limited in scope and amount, issued by the Guarantor. If so
specified, the Guarantor may be obligated to take one or more of the following
actions in the event the Company fails to do so: make deposits to the
Certificate Account (a 'Deposit Guarantee'); make advances (an 'Advance
Guarantee'); or purchase Liquidating Loans (a 'Liquidating Loan Guarantee'). Any
such Limited Guarantee will be limited in amount and a portion of the coverage
of any such Limited Guarantee may be separately allocated to certain events. For
example, a portion of the aggregate amount of a Liquidating Loan Guarantee may
 
                                       31

<PAGE>

be separately allocated to Liquidating Loans due to special hazards not covered
by standard hazard insurance policies, Liquidating Loans due to the bankruptcy
of a mortgagor, and other Liquidating Loans. The scope, amount and, if
applicable, the allocation of any Limited Guarantee will be described in the
related Prospectus Supplement.
 
     If and to the extent that the Guarantor is required to make payments under
any such Limited Guarantee, unless otherwise specified in the Prospectus
Supplement, the Guarantor, upon notice from the Trustee, will be obligated to
deposit the amount of such payments in same-day funds in the Certificate Account
on the day after the Deposit Date, all as set forth more specifically in such
Limited Guarantee. If the Guarantor is required to make any payment under a
Limited Guarantee, the Guarantor will be subrogated, to the extent of such
payment, to the rights of holders of the Certificates and shall have all rights
of the Company under the related Agreement as described herein. Any Limited
Guarantee issued by the Guarantor will be limited in amount or duration as
specified in the Prospectus Supplement and may not guarantee the full extent of
the Company's obligations with respect to which such Limited Guarantee was
issued. As described in the Prospectus Supplement, if applicable, the amount of
any Limited Guarantee will be reduced by amounts distributed by the Guarantor,
and not recovered by it, under all Limited Guarantees issued by the Guarantor
with respect to the same series of Certificates and by any reduction in the
Company's obligations with respect to which such Limited Guarantee was issued.
 
SUBORDINATION
 
     If so specified in the Prospectus Supplement, distributions in respect of
scheduled principal, Principal Prepayments, interest or any combination thereof
that otherwise would have been payable to one or more classes of Certificates of
a series (the 'subordinated Certificates') will instead be payable to holders of
one or more other classes of such series (the 'senior Certificates') under the
circumstances and to the extent specified in the Prospectus Supplement. If
specified in the Prospectus Supplement, delays in receipt of scheduled payments
on the Mortgage Loans or Contracts and losses on defaulted Mortgage Loans or
Contracts will be borne first by the various classes of subordinated
Certificates and thereafter by the various classes of senior Certificates, in
each case under the circumstances and subject to the limitations specified in
the Prospectus Supplement. The aggregate distributions in respect of delinquent
payments on the Mortgage Loans or Contracts over the lives of the Certificates
or at any time, the aggregate losses in respect of defaulted Mortgage Loans or
Contracts which must be borne by the subordinated Certificates by virtue of
subordination and the amount of the distributions otherwise distributable to the
subordinated Certificateholders that will be distributable to senior
Certificateholders on any Distribution Date may be limited as specified in the
Prospectus Supplement. If aggregate distributions in respect of delinquent
payments on the Mortgage Loans or Contracts or aggregate losses in respect of
such Mortgage Loans or Contracts were to exceed the total amounts payable and
available for distribution to holders of subordinated Certificates or, if
applicable, were to exceed the specified maximum amount, holders of senior
Certificates could experience losses on the Certificates.
 
     In addition to or in lieu of the foregoing, if so specified in the
Prospectus Supplement, all or any portion of distributions otherwise payable to
holders of subordinated Certificates on any Distribution Date may instead be
deposited into one or more reserve accounts (the 'Reserve Account') established
by the Trustee. If so specified in the Prospectus Supplement, such deposits may
be made on each Distribution Date, on each Distribution Date for specified
periods or until the balance in the Reserve Account has reached a specified
amount and, following payments from the Reserve Account to holders of senior
Certificates or otherwise, thereafter to the extent necessary to restore the
balance in the Reserve Account to required levels, in each case as specified in
the Prospectus Supplement. If so specified in the Prospectus Supplement, amounts
on deposit in the Reserve Account may be released to the Company or the holders
of any class of Certificates at the times and under the circumstances specified
in the Prospectus Supplement.
 
     If specified in the Prospectus Supplement, one or more classes of
Certificates may bear the risk of certain losses on defaulted Mortgage Loans not
covered by other forms of credit support prior to other classes of Certificates.
Such subordination might be effected by reducing the Certificate Principal
Balance of the subordinated Certificates on account of such losses, thereby
decreasing the proportionate share of distributions allocable to such
Certificates, or by another means specified in the Prospectus Supplement.
 
                                       32

<PAGE>

     If specified in the Prospectus Supplement, various classes of senior
Certificates and subordinated Certificates may themselves be subordinate in
their right to receive certain distributions to other classes of senior and
subordinated Certificates, respectively, through a cross-support mechanism or
otherwise.
 
     If so specified in the Prospectus Supplement, the same class of
Certificates may constitute senior Certificates with respect to certain types of
payments or certain losses and subordinated Certificates with respect to other
types of payments or losses.
 
     As between classes of senior Certificates and as between classes of
subordinated Certificates, distributions may be allocated among such classes (i)
in the order of their scheduled final distribution dates, (ii) in accordance
with a schedule or formula, (iii) in relation to the occurrence of events, or
(iv) otherwise, in each case as specified in the Prospectus Supplement. As
between classes of subordinated Certificates, payments to holders of senior
Certificates on account of delinquencies or losses and payments to any Reserve
Account will be allocated as specified in the Prospectus Supplement.
 
     Unless otherwise specified in the Prospectus Supplement, the Agreement may
permit the Company, at its option, to grant to the holders of certain classes of
subordinated Certificates certain rights in connection with the foreclosure of
defaulted Mortgage Loans in the related Trust Fund. See 'Servicing of the
Mortgage Loans and Contracts--Collection and Other Servicing Procedures.'
 
CROSS-SUPPORT
 
     If specified in the Prospectus Supplement, the beneficial ownership of
separate groups of assets included in a Trust Fund may be evidenced by separate
classes of the related series of Certificates. In such case, credit support may
be provided by a cross-support feature which may require that distributions be
made with respect to Certificates evidencing beneficial ownership of one or more
asset groups prior to distributions to subordinated Certificates evidencing a
beneficial ownership interest in other asset groups within the same Trust Fund.
The Prospectus Supplement for a series which includes a cross-support feature
will describe the manner and conditions for applying such cross-support feature.
 
     If specified in the Prospectus Supplement, the coverage provided by one or
more forms of credit support may apply concurrently to two or more separate
Trust Funds. If applicable, the Prospectus Supplement will identify the Trust
Funds to which such credit support relates and the manner of determining the
amount of the coverage provided thereby and of the application of such coverage
to the identified Trust Funds.
 
POOL INSURANCE
 
     In order to decrease the likelihood that Certificateholders will experience
losses in respect of the Mortgage Loans, if specified in the Prospectus
Supplement, the Company will obtain one or more pool insurance policies. Any
such policies may be in lieu of or in addition to any obligations of the Company
in respect of the Mortgage Loans. Such pool insurance policy will, subject to
the limitations described in the Prospectus Supplement, cover loss by reason of
default in payments on the Mortgage Loans up to the amounts specified in the
Prospectus Supplement or the Detailed Description and for the periods specified
in the Prospectus Supplement. The Company, as servicer, will agree to use its
best reasonable efforts to maintain in effect any such pool insurance policy and
to present claims thereunder to the pool insurer on behalf of itself, the
Trustee and the Certificateholders. The pool insurance policy, however, is not a
blanket policy against loss, since claims thereunder may only be made respecting
particular defaulted Mortgage Loans and only upon satisfaction of certain
conditions precedent described below. The pool insurance policy, if any, will
not cover losses due to a failure to pay or denial of a claim under a primary
mortgage insurance policy, irrespective of the reason therefor.
 
     Unless otherwise specified in the Prospectus Supplement, the original
amount of coverage under any pool insurance policy will be reduced over the life
of the related series of Certificates by the aggregate dollar amount of claims
paid less the aggregate of the net amounts realized by the pool insurer upon
disposition of all foreclosed properties. The amount of claims paid will include
certain expenses incurred by the Company as well as accrued interest on
delinquent Mortgage Loans to the date of payment of the claim. See 'Certain
Legal Aspects of the Mortgage Loans--Foreclosure'. Accordingly, if aggregate net
claims paid under any pool insurance policy reach the original policy limit,
coverage under that pool insurance policy will be exhausted and any further
losses will
 
                                       33

<PAGE>

be borne by one or more classes of Certificateholders unless assumed by the
Company or the Guarantor under any obligations they may have in respect of
Liquidating Loans or by some other entity, if and to the extent specified in the
Prospectus Supplement.
 
     Since any mortgage pool insurance policy may require that the property
subject to a defaulted Mortgage Loan be restored to its original condition prior
to claiming against the pool insurer, such policy may not provide coverage
against hazard losses. As described under 'Servicing of the Mortgage
Loans--Hazard Insurance', the hazard policies concerning the Mortgage Loans
typically exclude from coverage physical damage resulting from a number of
causes and even when the damage is covered, may afford recoveries which are
significantly less than the full replacement cost of such losses. Even if
special hazard insurance is applicable as specified in the Prospectus
Supplement, no coverage in respect of special hazard losses will cover all
risks, and the amount of any such coverage will be limited. See 'Special Hazard
Insurance' below. As a result, certain hazard risks will not be insured against
and will therefore be borne by Certificateholders, unless otherwise assumed by
the Company or the Guarantor under any obligations they may have in respect of
Liquidating Loans or by some other entity, as specified in the Prospectus
Supplement.
 
     The terms of any pool insurance policy relating to a pool of Contracts will
be described in the related Prospectus Supplement.
 
SPECIAL HAZARD INSURANCE
 
     In order to decrease the likelihood that Certificateholders will experience
losses in respect of the Mortgage Loans, if specified in the Prospectus
Supplement, the Company will obtain one or more special hazard insurance
policies with respect to the Mortgage Loans. Any such policies may be in lieu of
or in addition to any obligations of the Company to advance delinquent payments
in respect of the Mortgage Loans. Such a special hazard insurance policy will,
subject to limitations described below and in the Prospectus Supplement, protect
holders of Certificates from (i) loss by reason of damage to Mortgaged
Properties caused by certain hazards (including earthquakes and, to a limited
extent, tidal waves and related water damage) not covered by the standard form
of hazard insurance policy for the respective states in which the Mortgaged
Properties are located or under flood insurance policies, if any, covering the
Mortgaged Properties, and (ii) loss from partial damage caused by reason of the
application of the co-insurance clause contained in hazard insurance policies.
Any special hazard insurance policy may not cover losses occasioned by war,
civil insurrection, certain governmental actions, errors in design, faulty
workmanship or materials (except under certain circumstances), nuclear reaction,
flood (if the Mortgaged Property is located in a federally designated flood
area), chemical contamination and certain other risks. Aggregate claims under
each special hazard insurance policy may be limited to a specified percentage of
the aggregate principal balance as of the Cut-off Date of the Mortgage Loans.
Any special hazard insurance policy may also provide that no claim may be paid
unless hazard and, if applicable, flood insurance on the Mortgaged Property has
been kept in force and other protection and preservation expenses have been paid
by the Company.
 
     Subject to the foregoing limitations, any special hazard insurance policy
may provide that, where there has been damage to property securing a foreclosed
Mortgage Loan (title to which has been acquired by the insured) and to the
extent such damage is not covered by the hazard insurance policy or flood
insurance policy, if any, maintained by the mortgagor or the Company, the
special hazard insurer will pay the lesser of (i) the cost of repair or
replacement of such property or (ii) upon transfer of the property to the
special hazard insurer, the unpaid principal balance of such Mortgage Loan at
the time of acquisition of such property by foreclosure or deed in lieu of
foreclosure, plus accrued interest to the date of claim settlement and certain
expenses incurred by the Company with respect to such property. If the unpaid
principal balance plus accrued interest and certain expenses is paid by the
insurer, the amount of further coverage under the related special hazard
insurance policy will be reduced by such amount less any net proceeds from the
sale of the property. Any amount paid as the cost of repair or replacement of
the property will also reduce coverage by such amount. Restoration of the
property with the proceeds described under clause (i) above will satisfy the
condition under any pool insurance policy that the property be restored before a
claim under such pool insurance policy may be validly presented with respect to
the defaulted Mortgage Loan secured by such property. The payment described
under clause (ii) above will render unnecessary presentation of a claim in
respect of such Mortgage Loan under the related pool insurance policy.
Therefore, so long as a pool insurance policy remains in effect, the payment by
the insurer under a special hazard insurance policy of the cost of repair or
replacement or the unpaid principal balance of the Mortgage Loan
 
                                       34

<PAGE>

plus accrued interest and certain expenses will not affect the total insurance
proceeds paid to Certificateholders, but will affect the relative amounts of
coverage remaining under the related special hazard insurance policy and pool
insurance policy.
 
     The terms of any special hazard policy relating to a pool of Contracts will
be described in the related Prospectus Supplement.
 
BANKRUPTCY BOND
 
     In the event of a bankruptcy of a borrower, the bankruptcy court may
establish the value of the Mortgaged Property securing the related Mortgage Loan
at an amount less than the then outstanding principal balance of such Mortgage
Loan secured by such Mortgaged Property and could reduce the secured debt to
such value. In such case, the holder of such Mortgage Loan would become an
unsecured creditor to the extent of the difference between the outstanding
principal balance of such Mortgage Loan and such reduced secured debt. In
addition, certain other modifications of the terms of a Mortgage Loan can result
from a bankruptcy proceeding, including the reduction in monthly payments
required to be made by the borrower. See 'Certain Legal Aspects of the Mortgage
Loans and Contracts--Enforceability of Certain Provisions'. If so provided in
the related Prospectus Supplement, the Company will obtain a bankruptcy bond or
similar insurance contract (the 'bankruptcy bond') for proceedings with respect
to borrowers under the Bankruptcy Code. The bankruptcy bond will cover certain
losses resulting from a reduction by a bankruptcy court of scheduled payments of
principal of and interest on a Mortgage Loan or a reduction by such court of the
principal amount of a Mortgage Loan and will cover certain unpaid interest on
the amount of such a principal reduction from the date of the filing of a
bankruptcy petition.
 
     The bankruptcy bond will provide coverage in the aggregate amount specified
in the related Prospectus Supplement. Such amount will be reduced by payments
made under such bankruptcy bond in respect of the related Mortgage Loans, unless
otherwise specified in the related Prospectus Supplement, and will not be
restored.
 
     In lieu of a bankruptcy bond, the Company may obtain a Limited Guarantee to
cover such bankruptcy-related losses.
 
     The terms of any bankruptcy bond (or Limited Guarantee in lieu thereof)
relating to a pool of Contracts will be described in the related Prospectus
Supplement.
 
REPURCHASE BOND
 
     If so specified in the related Prospectus Supplement, the Company, as
servicer, will be obligated to repurchase any Mortgage Loan or Contract (up to
an aggregate dollar amount specified in the related Prospectus Supplement) for
which insurance coverage is denied due to dishonesty, misrepresentation or fraud
in connection with the origination or sale of such Mortgage Loan or Contract.
Such obligation may be secured by a surety bond or other instrument or mechanism
guaranteeing payment of the amount to be paid by the Company.
 
GUARANTEED INVESTMENT CONTRACTS
 
     If so specified in the Prospectus Supplement, on or prior to the Delivery
Date, the Trustee will enter into a guaranteed investment contract (a 'GIC')
pursuant to which all amounts deposited in the Certificate Account, and if so
specified the Reserve Accounts, will be invested by the Trustee and under which
the issuer of the GIC will pay to the Trustee interest at an agreed rate per
annum with respect to the amounts so invested.
 
RESERVE ACCOUNTS
 
     If specified in the Prospectus Supplement, cash, U.S. Treasury securities,
instruments evidencing ownership of principal or interest payments thereon,
letters of credit, demand notes, certificates of deposit, other instruments or
obligations or a combination thereof in the aggregate amount specified in the
Prospectus Supplement will be deposited by the Company on the Delivery Date in
one or more accounts (each, a 'Reserve Account') established by the Trustee.
Such cash and the principal and interest payments on such other instruments will
be used to enhance the likelihood of timely payment of principal of, and
interest on, or, if so specified in the Prospectus Supplement, to provide
additional protection against losses in respect of, the assets in the related
Trust
 
                                       35

<PAGE>

Fund, to pay the expenses of the Trust Fund or for such other purposes specified
in the Prospectus Supplement. Whether or not the Company has any obligation to
make such a deposit, certain amounts to which the subordinated
Certificateholders, if any, will otherwise be entitled may instead be deposited
into the Reserve Account from time to time and in the amounts as specified in
the Prospectus Supplement. Any cash in the Reserve Account and the proceeds of
any other instrument upon maturity will be invested in Eligible Investments,
which, unless otherwise specified in the Prospectus Supplement, will include
obligations of the United States and certain agencies thereof, certificates of
deposit, certain commercial paper, time deposits and bankers acceptances sold by
eligible commercial banks and certain repurchase agreements of United States
government securities with eligible commercial banks. If a letter of credit is
deposited with the Trustee, such letter of credit will be irrevocable. Unless
otherwise specified in the Prospectus Supplement, any instrument deposited
therein will name the Trustee, in its capacity as trustee for the holders of the
Certificates, as beneficiary and will be issued by an entity acceptable to each
rating agency that rates the Certificates. Additional information with respect
to such instruments deposited in the Reserve Accounts will be set forth in the
Prospectus Supplement.
 
     Any amounts so deposited and payments on instruments so deposited will be
available for withdrawal from the Reserve Account for distribution to the
holders of Certificates for the purposes, in the manner and at the times
specified in the Prospectus Supplement.
 
OTHER INSURANCE, GUARANTEES AND SIMILAR INSTRUMENTS OR AGREEMENTS
 
     If specified in the Prospectus Supplement, the related Trust Fund may also
include insurance, guarantees, letters of credit or similar arrangements for the
purpose of (i) maintaining timely payments or providing additional protection
against losses on the assets included in such Trust Fund, (ii) paying
administrative expenses or (iii) establishing a minimum reinvestment rate on the
payments made in respect of such assets or principal payment rate on such
assets. Such arrangements may include agreements under which Certificateholders
are entitled to receive amounts deposited in various accounts held by the
Trustee upon the terms specified in the Prospectus Supplement. Such arrangements
may be in lieu of any obligation of the Company to advance delinquent
installments in respect of the Mortgage Loans or Contracts. See 'Servicing of
Mortgage Loans and Contracts--Advances'.
 
            YIELD, MATURITY AND WEIGHTED AVERAGE LIFE CONSIDERATIONS
 
     The yields to maturity and weighted average lives of the Certificates will
be affected primarily by the rate and timing of principal payments received on
or in respect of the Mortgage Loans, Agency Securities or Contracts included in
the related Trust Fund. Such principal payments will include scheduled payments
as well as Principal Prepayments (including refinancings, some of which
refinancings may be solicited by the Company) and prepayments resulting from
foreclosure, condemnation and other dispositions of the Mortgaged Properties or
Manufactured Homes (including amounts paid by insurers under applicable
insurance policies), from repurchase by the Company of any Mortgage Loan or
Contract as to which there has been a material breach of warranty or defect in
documentation (or deposit of certain amounts in respect of delivery of a
substitute Mortgage Loan), repurchase by the Company of Mortgage Loans modified
by it in lieu of refinancing thereof, repurchase by the Company, the Guarantor
or any other entity of any Liquidating Loan or Delinquent Mortgage Loan, if
applicable, and from the repurchase by the Company of all of the Certificates or
all of the Mortgage Loans, Agency Securities or Contracts in certain
circumstances. See 'Description of the Certificates--Optional Termination of
Trust Fund'. The yield to maturity and weighted average lives of the
Certificates may also be affected by the amount and timing of delinquencies and
losses on the Mortgage Loans or Contracts.
 
     After origination of the related Mortgage Loans, certain of the borrowers
may be solicited by the Company to participate in its biweekly payment programs,
under which payments equal to one-half of one full monthly payment are made in
respect of the related Mortgage Loan on a biweekly basis. In contrast to a
Mortgage Loan in respect of which payments are received once every month, a
Mortgage Loan involved in a biweekly payment program will produce thirteen full
monthly payments per calendar year, resulting in additional prepayments of
principal over the life of the Mortgage Loan. All payments of principal received
during a month in respect of a Mortgage Loan in a biweekly payment program will
be applied to the principal balance of such Mortgage Loan on the first business
day of the succeeding month and will not result in interest shortfalls.
 
                                       36

<PAGE>

     A number of social, economic, tax, geographic, demographic, legal and other
factors may influence prepayments, delinquencies and losses. For a Trust Fund
comprised of Mortgage Loans, these factors may include the age of the Mortgage
Loans, the geographic distribution of the Mortgaged Properties, the payment
terms of the Mortgages, the characteristics of the mortgagors, homeowner
mobility, economic conditions generally and in the geographic area in which the
Mortgaged Properties are located, enforceability of due-on-sale clauses,
servicing decisions, prevailing mortgage market interest rates in relation to
the interest rates on the Mortgage Loans, the availability of mortgage funds,
the use of second or 'home equity' mortgage loans by mortgagors, the
availability of refinancing opportunities, the use of the properties as second
or vacation homes, the extent of the mortgagors' net equity in the Mortgaged
Properties and, where investment properties are securing the Mortgage Loans,
tax-related considerations and the availability of other investments. The rate
of principal payment may also be subject to seasonal variations. The prepayment
experience on Home Equity Loans may differ from those of other Mortgage Loans
and may differ between first-priority and second-priority Home Equity Loans.
Similar types of factors may affect the rate of prepayments, delinquencies and
losses on Contracts.
 
     The rate of principal prepayments on pools of conventional housing loans
has fluctuated significantly in recent years. Generally, if prevailing interest
rates were to fall significantly below the interest rates on the Mortgage Loans,
the Mortgage Loans would be expected to prepay at higher rates than if
prevailing rates were to remain at or above the interest rates on the Mortgage
Loans. Conversely, if interest rates were to rise above the interest rates on
the Mortgage Loans, the Mortgage Loans would be expected to prepay at lower
rates than if prevailing rates were to remain at or below interest rates on the
Mortgage Loans. The timing of changes in the rate of prepayments may
significantly affect a Certificateholder's actual yield to maturity, even if the
average rate of principal payments is consistent with a Certificateholder's
expectation. In general, the earlier a prepayment of principal the greater the
effect on a Certificateholder's yield to maturity. As a result, the effect on a
Certificateholder's yield of principal payments occurring at a rate higher (or
lower) than the rate anticipated by the investor during the period immediately
following the issuance of the related series of Certificates will not be offset
by a subsequent like reduction (or increase) in the rate of principal payments.
 
     When a Mortgage Loan or Contract prepays in full, the borrower will
generally be required to pay interest on the amount of prepayment only to the
prepayment date. When a partial prepayment of principal is made on a Mortgage
Loan (other than a simple interest Home Equity Loan), the borrower generally
will not be required to pay interest on the amount of the partial prepayment
during the month in which such prepayment is made. In addition, unless otherwise
specified in the related Prospectus Supplement, a full or partial prepayment
will not be required to be passed through to Certificateholders until the month
following receipt.
 
     Unless otherwise specified in the Prospectus Supplement, interest with
respect to Home Equity Loans accrues on a simple interest basis. Under the
simple interest method, regularly scheduled payments (which are based on the
amortization of the loan over a series of equal monthly payments) and other
payments are applied first to interest accrued to the date payment is received
and then to reduce the unpaid principal balance of the related loan. Each
regularly scheduled monthly interest payment is calculated by multiplying the
outstanding principal balance of the loan by the stated interest rate. Such
product is then multiplied by a fraction, the numerator of which is the number
of days elapsed since the preceding payment of interest was made and the
denominator of which is either 365 or 360, depending on applicable state law.
 
     As a result of the payment terms of simple interest Home Equity Loans, the
making of a scheduled payment on, or the prepayment of, such a Home Equity Loan
prior to its scheduled due date may result in the collection of less than one
month's interest on such Home Equity Loan for the period since the preceding
payment was made. Conversely, if the scheduled payment on such a Home Equity
Loan is made after its scheduled payment date or the Home Equity Loan is prepaid
after the scheduled due date, the collection of interest on such Home Equity
Loan for such period may be greater than one month's interest on such Home
Equity Loan. In addition, the extent to which simple interest Home Equity Loans
experience early payment or late payment of scheduled payments will
correspondingly change the amount of principal received during a monthly period
and, accordingly, the amount of principal to be distributed on the related
Distribution Date and the amount of unpaid principal due at the stated maturity
of such Home Equity Loans. To the extent shortfalls attributable to prepayments
or the early receipt of a scheduled payment on Home Equity Loans are not
compensated for by any forms of credit enhancement described in the Prospectus
Supplement, the Certificateholders will experience delays or losses in amounts
due them.
 
                                       37

<PAGE>

     If a Mortgagor pays more than one scheduled installment on a simple
interest Home Equity Loan at a time, the entire amount of the additional
installment will be treated as a principal prepayment and passed through to
Certificateholders in the month following the month of receipt. In such case,
although the Mortgagor will not be required to make the next regularly scheduled
installment, interest will continue to accrue on the principal balance of the
Home Equity Loan, as reduced by the application of the early installment. As a
result, when the Mortgagor pays the next required installment, the installment
so paid may be insufficient to cover the interest that has accrued since the
last payment by the Mortgagor. Notwithstanding such insufficiency, the
Mortgagor's Home Equity Loan would be considered to be current. If specified in
the Prospectus Supplement, the Company will be required to advance the amount of
such insufficiency. This insufficiency will continue until the installment
payments received are once again sufficient to cover all accrued interest and to
reduce the principal balance of the Home Equity Loan. Depending on the principal
balance and interest rate of the related Home Equity Loan and on the number of
installments that were paid early, there may be extended periods of time during
which Home Equity Loans that are current are not amortizing.
 
     Factors other than those identified herein and in the Prospectus Supplement
could significantly affect principal prepayments at any time and over the lives
of the Certificates. The relative contribution of the various factors affecting
prepayment may also vary from time to time. There can be no assurance as to the
rate of payment of principal of the Mortgage Loans, Agency Securities or
Contracts at any time or over the lives of the Certificates.
 
     The Prospectus Supplement relating to a series of Certificates will discuss
in greater detail the effect of the rate and timing of principal payments
(including prepayments), delinquencies and losses on the yield, weighted average
lives and maturities of such Certificates. If a series of Certificates is backed
by a pool of Mortgage Loans that includes Home Equity Loans providing for
balloon payments at maturity, the Prospectus Supplement will contain information
regarding the potential effect of such Mortgage Loans on the weighted average
lives of such Certificates.
 
                 SERVICING OF THE MORTGAGE LOANS AND CONTRACTS
 
     With respect to each series of Certificates, the related Mortgage Loans
will be serviced either (i) by the Company as primary servicer, (ii) by the
Company as master servicer, (iii) by another institution as primary servicer or
(iv) by another institution as master servicer. If an institution other than the
Company acts as primary servicer or as master servicer for a series, the Company
may have no servicing obligations with respect to such series. If the Company or
another institution acts as master servicer with respect to a series, the
related Agreement may provide either (i) that the master servicer may delegate
all or a portion of the servicing duties described below to other servicers but
shall remain directly liable for all such servicing duties (a 'Direct Master
Servicing Arrangement'), or (ii) that certain of the servicing duties described
below may be performed directly by other servicers, pursuant to servicing
agreements entered into between such servicers and the Company, as seller, and
assigned to the Trustee, in which event the master servicer will be obligated to
supervise such servicers' performance but will not itself be obligated to
perform such duties (a 'Supervisory Master Servicing Arrangement'). Unless
otherwise specified in the Prospectus Supplement, if the Company is acting as
master servicer under a Direct Master Servicing Arrangement, the servicing
agreement entered into between the Company and the direct servicer will be
deemed to be between the Company and the direct servicer alone, and the Trustee
and the Certificateholders will have no claims, obligations, duties or
liabilities with respect thereto. Each master servicer will have the ability to
terminate any such other servicer upon terms that will be agreed to at or before
the time the related series of Certificates is issued. Unless otherwise
specified in the Prospectus Supplement, in the event that the master servicer is
no longer acting as such for the series, the Trustee or a successor master
servicer shall succeed to the master servicer's rights under the servicing
agreement with the primary servicer.
 
     The Prospectus Supplement for each series will specify whether the Company
or another institution will act as primary servicer or master servicer for such
series, and if there is a master servicer, whether the master servicing
arrangement is a Direct Master Servicing Arrangement or a Supervisory Master
Servicing Arrangement. If the Company acts as master servicer for a series under
a Direct Master Servicing Arrangement, all references herein to the Company as
servicer should be read to refer to the Company as master servicer, as
 
                                       38

<PAGE>

appropriate. If the Company acts as master servicer for a series under a
Supervisory Master Servicing Arrangement, such references should be read to
refer to the direct servicers of such series, acting under the supervision of
the Company as master servicer. If an institution other than the Company acts as
primary servicer for a series, or acts as master servicer for such series under
a Direct Master Servicing Arrangement, all references herein to the Company as
servicer should be read to refer to such institution as primary or master
servicer, as appropriate. If an institution other than the Company acts as
master servicer with respect to a series under a Supervisory Master Servicing
Arrangement, such references should be read to refer to the direct servicers of
such series, acting under the supervision of such institution as master
servicer.
 
     With respect to each series of Certificates, except to the extent the
Agreement specifically prescribes other servicing standards, the related
Mortgage Loans will be serviced under servicing standards substantially
equivalent to those required for approval by FNMA or FHLMC.
 
COLLECTION AND OTHER SERVICING PROCEDURES
 
     Mortgage Loans.  The Company, as servicer, will be responsible for making
reasonable efforts to collect all payments called for under the Mortgage Loans
and shall, consistent with each Agreement, follow such collection procedures as
it follows with respect to mortgage loans in its servicing portfolio which are
comparable to the Mortgage Loans. Consistent with the above, the Company, as
servicer, may, in its discretion, (i) waive any late payment charge and (ii) if
a default on the related Mortgage Loan has occurred or is reasonably
foreseeable, arrange with the mortgagor, at any time prior to foreclosure, a
schedule for the payment of principal and interest due and unpaid for a period
of up to two years after the date upon which the arrangement with the mortgagor
is entered into (generally, the arrangement period will not be more than
eighteen months). In the event of any such arrangement the Company will be
responsible for distributing funds with respect to such Mortgage Loan during the
scheduled period in accordance with the original amortization schedule thereof
and without regard to the temporary modification thereof.
 
     The Company, as servicer, will be obligated to follow such normal practices
and procedures as it deems necessary or advisable to realize upon a defaulted
Mortgage Loan. In this regard, the Company, as servicer, may (directly or
through a local assignee) sell the property at a foreclosure or trustee's sale,
negotiate with the mortgagor for a deed in lieu of foreclosure or, in the event
a deficiency judgment is available against the mortgagor or other person (see
'Certain Legal Aspects of the Mortgage Loans and Contracts--Anti-Deficiency
Legislation and Other Limitations on Lenders' for a description of the limited
availability of deficiency judgments), foreclose against such property and
proceed for the deficiency against the appropriate person. The amount of the
ultimate net recovery (including the proceeds of any pool insurance or other
guarantee), after reimbursement to the Company, as servicer, of its expenses
incurred in connection with the liquidation of any such defaulted Mortgage Loan
(including those described in the next paragraph in the case of second-lien Home
Equity Loans) and prior unreimbursed advances of principal and interest,
delinquent taxes, assessments, insurance premiums and comparable items and
property protection expenses with respect thereto, will be credited to the Loan
Payment Record when realized, and will be distributed to Certificateholders on
the next Distribution Date following the month of receipt. If specified in the
Prospectus Supplement, if such net recovery exceeds the Principal Balance of
such Mortgage Loan plus one month's interest thereon at the Remittance Rate, the
excess will be paid to the Company as additional servicing compensation. The
Company will not be required to expend its own funds in connection with any
foreclosure or towards the restoration of any Mortgaged Property unless it shall
determine (i) that such restoration or foreclosure will increase the proceeds of
liquidation of the Mortgaged Loan to Certificateholders after reimbursement to
itself for such expenses and (ii) that such expenses will be recoverable to it
either through liquidation proceeds or insurance proceeds in respect of the
related Mortgage Loan.
 
     The Company, as servicer, will not be obligated to foreclose on any
Mortgaged Property which it believes may be contaminated with or affected by
hazardous or toxic wastes, materials or substances. See 'Certain Legal Aspects
of the Mortgage Loans--Environmental Considerations'. The Company will not be
liable to the Certificateholders of a series if it fails to foreclose on a
Mortgaged Property securing a Mortgage Loan in the related Trust Fund which it
believes may be so contaminated or affected, even if such Mortgaged Property is,
in fact, not so contaminated or affected. If the Company does not foreclose on
such a Mortgaged Property, the Certificateholders of the related series may
experience a loss on the related Mortgage Loan. In addition, the
 
                                       39

<PAGE>

Company will not be liable to the Certificateholders if, based on its belief
that no such contamination or effect exists, the Company forecloses on a
Mortgaged Property and takes title to such Mortgaged Property on behalf of the
related Trustee, and thereafter such Mortgaged Property is determined to be so
contaminated or affected.
 
     Unless otherwise specified in the Prospectus Supplement relating to a
series of Certificates, if the Company determines that all amounts which it
expects to recover from or on account of such a Mortgage Loan have been
recovered, the Company's obligation, if any, to advance delinquent installments
of principal and interest on such Mortgage Loan will cease and the Principal
Balance of such Mortgage Loan will be allocated in reduction of the Certificate
Principal Balance of the Certificates of the related series in the manner in
which losses are allocated as specified in such Prospectus Supplement.
 
     The Company may not foreclose on any Mortgaged Property securing a Home
Equity Loan unless it forecloses subject to any senior mortgage on such
Mortgaged Property and any outstanding property taxes. In the event of such
foreclosure, the Company generally will pay, subject to the final sentence of
this paragraph, the entire amount due on such senior mortgage loan to the senior
mortgagee at or prior to the foreclosure sale. If any senior mortgage is in
default after the Company has initiated its foreclosure action, the Company may
advance funds to keep the senior mortgage current until such time as the Company
satisfies such senior mortgage. In the event foreclosure proceedings have been
instituted on any senior mortgage prior to the initiation of the Company's
foreclosure action, the Company may satisfy the senior mortgage at the time of
the foreclosure sale or take other action to protect its interest in the related
Mortgaged Property. The Company will take or refrain from taking any such action
based upon the standards and considerations described in the preceding
paragraph.
 
     Unless otherwise specified in the Prospectus Supplement, if a series of
Certificates includes one or more classes of subordinated Certificates, the
Agreement may permit the Company, at its option, to grant to the holders of
certain classes of subordinated Certificates (the 'Loss Certificates') certain
rights in connection with the foreclosure of defaulted Mortgage Loans in the
related Trust Fund. Such rights may be granted on the date of initial issuance
of such series of Certificates or thereafter and may or may not inure to the
benefit of successive holders of the Loss Certificates. These rights would
include, among other things, the right to receive notice from the Company that
foreclosure of a defaulted Mortgage Loan is imminent and the right to instruct
the Company to delay the commencement of foreclosure proceedings for up to six
months after the Mortgage Loan has become delinquent. The Company may also grant
the holders of the Loss Certificates the option to purchase a defaulted Mortgage
Loan at the conclusion of such six-month period, at a purchase price equal to
its unpaid principal balance plus accrued interest. The proceeds of such
purchase would be deposited in the related Collection Account as liquidation
proceeds. It will be a condition to the exercise of these latter rights that a
reserve fund for the benefit of holders of the other classes of Certificates of
such series and the Company as servicer be established. An amount equal to 125%
of the greater of the Scheduled Principal Balance (as defined in the related
Prospectus Supplement) of the defaulted Mortgage Loan and the then current
appraised value of the underlying Mortgaged Property, together with interest at
the applicable Mortgage Rate for the period that foreclosure is delayed, must be
deposited into such reserve fund. The principal purpose of the reserve fund
would be to protect holders of the other classes of Certificates of such series
from any diminution in value of the underlying Mortgaged Property attributable
to the delay in foreclosure. Amounts on deposit in the reserve fund may be
invested in certain specific investments acceptable to each of the rating
agencies that are rating such Certificates.
 
     The exercise by holders of the Loss Certificates of the right to delay
foreclosure will not alter the obligation of the Company to make any advances of
delinquent Mortgage Loan payments specified in the Prospectus Supplement. Any
such advances made by the Company after the date foreclosure is delayed will be
recoverable by the Company from amounts on deposit in the reserve fund. The
Company will continue to be entitled to reimbursement for Nonrecoverable
Advances out of the assets of the related Trust Fund.
 
     The exercise by the holders of the Loss Certificates of any right to delay
commencement of foreclosure proceedings as described above could affect the
amount recovered upon the liquidation of the related Mortgaged Property and
could also affect the extent of any losses recognized thereon if the amounts
available in the reserve fund are not sufficient to make up the difference
between the net liquidation proceeds and the unpaid principal balance of the
related defaulted Mortgage Loan. There can be no assurance that this situation
would not arise under circumstances in which it could be in the interest of
other classes of Certificates to proceed promptly to pursue remedies against the
mortgagor and Mortgaged Property in order to expedite recovery on a defaulted
 

                                       40

<PAGE>

Mortgage Loan. Any right to delay commencement of foreclosure proceedings
granted to the holders of the Loss Certificates would terminate in certain
specified circumstances, including when such Class's Certificate Principal
Balance had been reduced to zero.
 
     With respect to Cooperative Loans, any prospective purchaser will generally
have to obtain the approval of the board of directors of the relevant
Cooperative before purchasing the shares and acquiring rights under the related
proprietary lease or occupancy agreement. See 'Certain Legal Aspects of the
Mortgage Loans and Contracts' herein. This approval is usually based on the
purchaser's income and net worth and numerous other factors. Although the
Cooperative's approval is unlikely to be unreasonably withheld or delayed, the
necessity of acquiring such approval could limit the number of potential
purchasers for those shares and otherwise limit the Trust Fund's ability to sell
and realize the value of those shares.
 
     In general, a 'tenant-stockholder' (as defined in Code Section 216(b)(2))
of a corporation that qualifies as a 'cooperative housing corporation' within
the meaning of Code Section 216(b)(1) is allowed a deduction for amounts paid or
accrued within his taxable year to the corporation representing his
proportionate share of certain interest expenses and certain real estate taxes
allowable as a deduction under Code Section 216(a) to the corporation under Code
Sections 163 and 164. In order for a corporation to qualify under Code Section
216(b)(1) for its taxable year in which such items are allowable as a deduction
to the corporation, such Section requires, among other things, that at least 80%
of the gross income of the corporation be derived from its tenant-stockholders
(as defined in Code Section 216(b)(2)). By virtue of this requirement, the
status of a corporation for purposes of Code Section 216(b)(1) must be
determined on a year-to-year basis. Consequently, there can be no assurance that
Cooperatives relating to the Cooperative Loans will qualify under such Section
for any particular year. In the event that such a Cooperative fails to qualify
for one or more years, the value of the collateral securing any related
Cooperative Loans could be significantly impaired because no deduction would be
allowable to tenant-stockholders under Code Section 216(a) with respect to those
years. In view of the significance of the tax benefits accorded
tenant-stockholders of a corporation that qualifies under Code Section
216(b)(1), the likelihood that such a failure would be permitted to continue
over a period of years appears remote.
 
     If a Mortgaged Property has been or is about to be conveyed by the
mortgagor, the Company, as servicer, will be obligated to accelerate the
maturity of the Mortgage Loan, unless it reasonably believes it is unable to
enforce that Mortgage Loan's 'due-on-sale' clause under applicable law or such
enforcement would adversely affect or jeopardize coverage under any related
primary mortgage insurance policy or pool insurance policy. If it reasonably
believes it may be restricted by law, for any reason, from enforcing such a
'due-on-sale' clause, the Company may enter into an assumption and modification
agreement with the person to whom such property has been or is about to be
conveyed, pursuant to which such person becomes liable under the Mortgage Note.
Any fee collected by the Company for entering into an assumption agreement will
be retained by the Company as additional servicing compensation. For a
description of circumstances in which the Company may be unable to enforce
'due-on-sale' clauses, see 'Certain Legal Aspects of the Mortgage Loans and
Contracts-- Enforceability of Certain Provisions'. In connection with any such
assumption, the Mortgage Rate borne by the related Mortgage Note may not be
decreased.
 
     The Company, as servicer, will maintain with one or more depository
institutions one or more accounts into which it will deposit all payments of
taxes, insurance premiums, assessments or comparable items received for the
account of the mortgagors. Withdrawals from such account or accounts may be made
only to effect payment of taxes, insurance premiums, assessments or comparable
items, to reimburse the Company, or applicable servicer, out of related
collections for any cost incurred in paying taxes, insurance premiums and
assessments or otherwise preserving or protecting the value of the Mortgages, to
refund to mortgagors any amounts determined to be overages and to pay interest
to mortgagors on balances in such account or accounts to the extent required by
law.
 
     So long as it acts as servicer of the Mortgage Loans, the Company, and any
successor to the Company appointed following an Event of Default, will be
required to maintain certain insurance covering errors and omissions in the
performance of its obligations as servicer and certain fidelity bond coverage
ensuring against losses through wrongdoing of its officers, employees and
agents.
 
                                       41

<PAGE>

     Contracts.  Pursuant to the Agreement, the Company, as servicer, will
service and administer the Contracts assigned to the Trustee as more fully set
forth below. The Company, either directly or through servicers subject to
general supervision by the Company, will perform diligently all services and
duties specified in each Agreement, in the same manner as prudent lending
institutions servicing manufactured housing installment sales contracts of the
same type as the Contracts in those jurisdictions where the related Manufactured
Homes are located. The Company, as servicer, will monitor the performance of
each other servicer, if any, and, unless the related Prospectus Supplement
states that a Supervisory Master Servicing Arrangement will be in effect, will
remain liable for the servicing of the Contracts in accordance with the terms of
the Agreement. The duties to be performed by the Company will include collection
and remittance of principal and interest payments, collection of insurance
claims and, if necessary, repossession.
 
     The Agreement will provide that, when any Manufactured Home securing a
Contract is about to be conveyed by the borrower, the Company, as servicer, to
the extent it has knowledge of such prospective conveyance and prior to the time
of the consummation of such conveyance, may exercise its rights to accelerate
the maturity of such Contract under the applicable 'due-on-sale' clause, if any,
unless the Company reasonably believes it is unable to enforce such
'due-on-sale' clause under applicable law. In such case, the Company is
authorized to take or enter into an assumption agreement from or with the person
to whom such Manufactured Home has been or is about to be conveyed, pursuant to
which such person becomes liable under the Contract.
 
     Under the Agreement, the Company, as servicer, will repossess or otherwise
comparably convert the ownership of properties securing such of the related
Contracts as come into and continue in default and as to which no satisfactory
arrangements can be made for collection of delinquent payments. In connection
with such repossession or other conversion, the Company will follow such
practices and procedures as it deems necessary or advisable and as shall be
normal and usual in its general servicing activities. The Company, however, will
not be required to expend its own funds in connection with any repossession or
towards the restoration of any property unless it determines (i) that such
restoration or repossession will increase the proceeds of liquidation of the
related Contract to the Certificateholders after reimbursement to itself for
such expenses and (ii) that such expenses will be recoverable to it either
through liquidation proceeds or through insurance proceeds.
 
PRIVATE MORTGAGE INSURANCE
 
     Generally, Mortgage Loans that the Company originates or acquires do not
have loan-to-value ratios in excess of 95% of their Original Value (as defined
above). Unless otherwise specified in the Prospectus Supplement, Mortgage Loans
(other than Home Equity Loans) that the Company originates or acquires that have
an original principal amount exceeding 80% of Original Value usually will have
private mortgage insurance. The Company generally requires such coverage to
continue until the outstanding principal amount equals or is less than 80% of
the greater of the Original Value and, if permitted under any pool insurance
policy obtained with respect to a series, the then current value of the property
as evidenced by an appraisal thereof satisfactory to the Company. Private
mortgage insurance policies may be provided by General Electric Mortgage
Insurance Corporation, an affiliate of the Company. Any mortgage insurance
relating to a pool of Contracts will be described in the related Prospectus
Supplement. The Company does not require private mortgage insurance policies on
Home Equity Loans. A private mortgage insurance policy may provide that, as an
alternative to paying a claim thereunder, the mortgage insurer will have the
right to purchase the Mortgage Loan following the receipt of a notice of
default, at a purchase price equal to the sum of the principal balance of the
Mortgage Loan, accrued interest thereon and the amount of certain advances made
by the Company as servicer with respect to the Mortgage Loan. The mortgage
insurer may have such purchase right after the borrower has failed to make three
scheduled monthly payments (or one payment if it is the first payment due on the
Mortgage Loan) or after any foreclosure or other proceeding affecting the
Mortgage Loan or the Mortgaged Property has been commenced. The proceeds of any
such purchase will be distributed to Certificateholders on the applicable
Distribution Date. A mortgage insurer may be more likely to exercise such
purchase option when prevailing interest rates are low relative to the interest
rate borne by the defaulted Mortgage Loan, in order to reduce the aggregate
amount of accrued interest that the insurer would be obligated to pay upon
payment of a claim.
 
                                       42

<PAGE>

HAZARD INSURANCE
 
     Mortgage Loans.  The Company, as servicer, will cause to be maintained for
each Mortgaged Property a hazard insurance policy. The coverage of such policy
is required to be in an amount not less than the maximum insurable value of the
improvements securing the related Mortgage Loan from time to time or the
principal balance owing on such Mortgage Loan from time to time, whichever is
less. All amounts collected by the Company for the benefit of the related Trust
Fund under any hazard policy (except for amounts to be applied to the
restoration or repair of property subject to the related Mortgage or property
acquired by foreclosure or amounts released to the related mortgagor in
accordance with the Company's normal servicing procedures) will be credited to
the related Loan Payment Record and deposited in the applicable Certificate
Account at the times and in the manner described under 'Loan Payment Record'
below.
 
     In general, the standard form of fire and extended coverage policy covers
physical damage to or destruction of the improvements on the property by fire,
lightning, explosion, smoke, windstorm and hail, riot, strike and civil
commotion, subject to the conditions and exclusions particularized in each
policy. Although the policies relating to the Mortgage Loans will be
underwritten by different insurers and, therefore, will not contain identical
terms and conditions, the basic terms thereof are dictated by state law. Such
policies typically do not cover any physical damage resulting from the
following: war, revolution, governmental actions, floods and other water-related
causes, earth movement (including earthquakes, landslides and mud flow), nuclear
reactions, pollution, wet or dry rot, vermin, rodents, insects or domestic
animals, theft and, in certain cases, vandalism. The foregoing list is merely
indicative of certain kinds of uninsured risks and is not intended to be
all-inclusive. If the property securing a Mortgage Loan is located in a
federally designated flood area, the Agreement will require that flood insurance
be maintained in such amounts as would be required by the Federal National
Mortgage Association in connection with its mortgage loan purchase program. The
Company may also purchase special hazard insurance against certain of the
uninsured risks described above. See 'Credit Support--Special Hazard Insurance'.
 
     Most of the properties securing the Mortgage Loans will be covered by
homeowners' insurance policies, which, in addition to the standard form of fire
and extended coverage, provide coverage for certain other risks. These
homeowners' policies typically contain a 'coinsurance' clause which in effect
requires the insured at all times to carry insurance of a specified percentage
(generally 80% to 90%) of the full replacement value of the improvements on the
property in order to recover the full amount of any partial loss. If the
insured's coverage falls below this specified percentage, then the insurer's
liability in the event of partial loss will not exceed the lesser of (i) the
actual cash value (generally defined as replacement cost at the time and place
of loss, less physical depreciation) of the improvements damaged or destroyed,
or (ii) such proportion of the loss as the amount of insurance carried bears to
the specified percentage of the full replacement cost of such improvements.
 
     Since the amount of hazard insurance the Company is required to cause to be
maintained on the improvements securing the Mortgage Loans declines as the
principal balances owing thereon decrease, if the residential properties
securing the Mortgage Loans appreciate in value over time, the effect of
coinsurance in the event of partial loss may be that hazard insurance proceeds
will be insufficient to restore fully the damaged property.
 
     The Company, as servicer, will cause to be maintained on any Mortgaged
Property acquired upon foreclosure, or by deed in lieu of foreclosure, on behalf
of the Trustee hazard insurance with extended coverage in an amount which is at
least equal to the lesser of (i) the maximum insurable value from time to time
of the improvements which are a part of such property or (ii) the unpaid
principal balance of the related Mortgage Loan, plus, in the case of a second
priority Home Equity Loan, the unpaid principal balance of any senior mortgage
loan, at the time of such foreclosure or deed in lieu of foreclosure, plus
accrued interest and the good-faith estimate of the Company of related
liquidation expenses to be incurred in connection therewith.
 
     The Company, as servicer, may maintain, in lieu of causing individual
hazard insurance policies to be maintained with respect to each Mortgage Loan,
one or more blanket insurance policies covering hazard losses on the Mortgage
Loans. The Company will pay the premium for such policy on the basis described
therein and will pay any deductible amount with respect to claims under such
policy relating to the Mortgage Loans.
 
     The Company will not require that a standard hazard or flood insurance
policy be maintained on the cooperative dwelling relating to any Cooperative
Loan. Generally, the Cooperative itself is responsible for
 
                                       43

<PAGE>

maintenance of hazard insurance for the property owned by the Cooperative and
the tenant-stockholders of that Cooperative do not maintain individual hazard
insurance policies. To the extent, however, that a Cooperative and the related
borrower on a Cooperative Loan do not maintain such insurance or do not maintain
adequate coverage or any insurance proceeds are not applied to the restoration
of damaged property, any damage to such borrower's cooperative dwelling or such
Cooperative's building could significantly reduce the value of the collateral
securing such Cooperative Loan to the extent not covered by other credit
support.
 
     Contracts.  The terms of the Agreement will require the Company to cause to
be maintained with respect to each Contract one or more hazard insurance
policies which provide, at a minimum, the same coverage as a standard form fire
and extended coverage insurance policy that is customary for manufactured
housing, issued by a company authorized to issue such policies in the state in
which the Manufactured Home is located, and in an amount which is not less than
the maximum insurable value of such Manufactured Home or the principal balance
due from the borrower on the related Contract, whichever is less. When a
Manufactured Home's location was, at the time of origination of the related
Contract, within a federally designated special flood hazard area, the Company
also shall cause such flood insurance to be maintained, which coverage shall be
at least equal to the minimum amount specified in the preceding sentence or such
lesser amount as may be available under the federal flood insurance program.
 
     The Company, as servicer, may maintain, in lieu of causing individual
hazard insurance policies to be maintained with respect to each Manufactured
Home, and shall maintain, to the extent that the related Contract does not
require the borrower to maintain a hazard insurance policy with respect to the
related Manufactured Home, one or more blanket insurance policies covering
losses on the borrowers' interests in the Contracts resulting from the absence
or insufficiency of individual hazard insurance policies. The Company will pay
the premium for such policy on the basis described therein and will pay any
deductible amount with respect to claims under such policy relating to the
Contracts.
 
     The Company, to the extent practicable, will cause the borrowers to pay all
taxes and similar governmental charges when and as due. To the extent that
nonpayment of any taxes or charges would result in the creation of a lien upon
any Manufactured Home having a priority equal or senior to the lien of the
related Contract, the Company will pay any such delinquent tax or charge. Any
such payment made by the Company will be reimbursable to the Company as
described under '--Loan Payment Record' below.
 
     If the Company repossesses a Manufactured Home on behalf of the Trustee,
the Company will either (i) maintain at its expense hazard insurance with
respect to such Manufactured Home, or (ii) indemnify the Trustee against any
damage to such Manufactured Home prior to resale or other disposition.
 
UNANTICIPATED RECOVERIES OF LOSSES ON THE MORTGAGE LOANS
 
     Unless otherwise specified in the Prospectus Supplement, in the event that
in any calendar month the Company recovers an amount (an 'Unanticipated
Recovery') as a result of events such as an unanticipated insurance settlement,
tax refund or mortgagor bankruptcy distribution, in respect of principal of a
Mortgage Loan which had previously been allocated as a loss to any class of
Certificates, on the Distribution Date in the next succeeding calendar month the
Trustee shall distribute to the holders of each outstanding class to which such
loss had previously been allocated its share of such Unanticipated Recovery in
an amount not to exceed the amount of such loss previously allocated to such
class, provided that following the Distribution Date on which the Certificate
Principal Balance of a class of Certificates has been reduced to zero, the
holders of such class shall not be entitled to any share of an Unanticipated
Recovery. Any distributions of Unanticipated Recoveries will not reduce the
Certificate Principal Balances of the class of Certificates receiving such
recoveries.
 
ADVANCES
 
     Unless otherwise specified in the Prospectus Supplement, in the event that
any borrower fails to make any payment of principal or interest required under
the terms of a Mortgage Loan or Contract, the Company, as servicer, will be
obligated to advance the entire amount of such payment adjusted in the case of
any delinquent interest payment to the applicable Remittance Rate. Unless
otherwise specified in the Prospectus Supplement and except as described above
under 'Credit Support--Purchases of Liquidating Loans', this obligation to
advance will be limited to amounts which the Company reasonably believes will be
recoverable by it out of liquidation
 
                                       44

<PAGE>

proceeds or otherwise in respect of such Mortgage Loan or Contract. The Company,
or the applicable servicer, will be entitled to reimbursement for any such
advance from related late payments on the Mortgage Loan or Contract as to which
such advance was made. Furthermore, unless otherwise specified in the Prospectus
Supplement, the Company, or the applicable servicer, will be entitled to
reimbursement for any such advance (i) from liquidation proceeds or insurance
proceeds received if such Manufactured Home is repossessed or such Mortgage Loan
is foreclosed (and is not purchased by the Company, as servicer, pursuant to any
obligation it may have to purchase Liquidating Loans) prior to any payment to
Certificateholders in respect of the repossession or foreclosure and (ii) from
receipts or recoveries on all other Mortgage Loans or Contracts or from any
other assets of the Trust Fund, for all or any portion of such advance which the
Company determines, in good faith, may not be ultimately recoverable from such
liquidation or insurance proceeds (a 'Nonrecoverable Advance'). Any
Nonrecoverable Advance will be reimbursable out of the assets of the Trust Fund.
The amount of any scheduled payment required to be advanced by the Company will
not be affected by any agreement between the Company and a borrower providing
for the postponement or modification of the due date or amount of such scheduled
payment. If specified in the Prospectus Supplement, the Trustee for the related
series will make advances of delinquent payments of principal and interest in
the event of a failure by the Company, as servicer, to perform such obligation.
 
     Unless otherwise specified in the Prospectus Supplement, until any Company
obligation to purchase Liquidating Loans is exhausted, the Company will advance
delinquent installments of principal and interest (adjusted to the applicable
Remittance Rate) on the Mortgage Loans as described above in an aggregate amount
up to the amount of its remaining purchase obligation, irrespective of whether
the Company believes any such advance will be recoverable. The Company's
obligation to advance delinquent installments of principal and interest
(adjusted to the applicable Remittance Rate) on the Mortgage Loans which it
deems recoverable will be unaffected by the exhaustion of any obligation of the
Company to purchase Liquidating Loans. In the event that the Company has an
obligation to purchase Liquidating Loans, any outstanding unreimbursed advances
may be charged against the amount of such obligation, subject to reinstatement
on account of net recoveries on such Mortgage Loan.
 
     Any such obligation to make advances may be limited to amounts due holders
of senior Certificates of the related series or may be limited to specified
periods or otherwise as specified in the Prospectus Supplement.
 
     The Company, or the applicable servicer, will make such advances in order
to maintain a regular flow of scheduled interest and principal payments to
holders of the relevant classes of Certificates. Such advances do not represent
an obligation of the Company or the applicable servicer to guarantee or insure
against losses.
 
LOAN PAYMENT RECORD
 
     The Agreement will require that the Company, as servicer, establish and
maintain a Loan Payment Record to which will be credited the following payments
received by the Company with respect to the Mortgage Loans or Contracts included
in the related Trust Fund:
 
          (i) All payments on account of principal, including Principal
     Prepayments (other than principal payments due and payable on or before,
     and Principal Prepayments received before, the Cut-off Date), received from
     borrowers (excluding any amounts specified in the Prospectus Supplement);
 
          (ii) All payments (other than those due and payable on or before the
     Cut-off Date) on account of interest received from borrowers (adjusted to
     the applicable Remittance Rate) and excluding any other amounts specified
     in the Prospectus Supplement;
 
          (iii) All amounts received by the Company, or the applicable servicer,
     in connection with the liquidation of any Mortgaged Property or
     Manufactured Home, and the purchase price including applicable interest
     thereon, of any Mortgage Loan or Contract purchased by the Company pursuant
     to the applicable Agreement or any amount paid in connection with the
     substitution of a Mortgage Loan;
 
          (iv) All proceeds received by the Company, or the applicable servicer,
     under any private mortgage insurance or any title, hazard, special hazard,
     pool or other insurance policy covering any Mortgage Loan or Contract,
     other than proceeds to be applied to the restoration or repair of the
     property subject to the related
 
                                       45

<PAGE>

     Mortgage or Contract or released to the borrower in accordance with the
     normal servicing procedures of the Company;
 
          (v) All proceeds received in respect of any Mortgaged Property
     acquired on behalf of the Trustee; and
 
          (vi) Unanticipated Recoveries.
 
The Company will not be required to credit to the Loan Payment Record payments
on any Mortgage Loan or Contract that has been previously released from the
Trust Fund, amounts representing fees or late charge penalties payable by
borrowers or amounts received by the Company for the account of borrowers for
application towards the payment of taxes, insurance premiums, assessments and
similar items.
 
     Unless otherwise specified in the Prospectus Supplement, the Company, as
servicer, may, from time to time, make debits to the Loan Payment Record for the
following purposes:
 
          (i) To reimburse the Company, or the applicable servicer, for expenses
     incurred by it in connection with the liquidation of any Mortgage Loan
     (including amounts advanced on any senior mortgage loans) or Manufactured
     Home and prior unreimbursed advances of delinquent installments of
     principal and interest, delinquent taxes, assessments, insurance premiums
     and comparable items and property protection expenses with respect thereto,
     in an amount not to exceed the amount of the proceeds from any such
     liquidation (including insurance proceeds) credited to the Loan Payment
     Record, and, if specified in the Prospectus Supplement, to the extent such
     proceeds, net of such expenses, exceed the Principal Balance of such
     Mortgage Loan or Contract plus one month's interest thereon at the
     applicable Remittance Rate, to pay to the Company such excess as additional
     servicing compensation;
 
          (ii) To reimburse the Company, or the applicable servicer, for
     expenses reimbursable under any insurance policy covering a Mortgage Loan
     and amounts expended by the Company in good faith in connection with the
     restoration of a Mortgaged Property damaged by an uninsured cause, in an
     amount not to exceed the proceeds from any insurance covering such Mortgage
     Loan and any liquidation thereof credited to the Loan Payment Record;
 
          (iii) To reimburse the Company for certain expenses relating to the
     Agreement as to which the Company is entitled to indemnification or
     reimbursement pursuant to the Agreement;
 
          (iv) To pay to the Company amounts received in respect of any Mortgage
     Loan or Contract purchased by the Company as required by the Agreement to
     the extent that the distribution of any such amounts on the Distribution
     Date upon which the proceeds of such purchase are distributed would make
     the total amount distributed in respect thereof greater than the Principal
     Balance thereof plus, unless otherwise specified in the Prospectus
     Supplement, one month's interest thereon at the applicable Remittance Rate,
     net of any unreimbursed advances of delinquent installments of principal
     and interest made by the Company;
 
          (v) To reimburse the Company (or, if applicable, the Guarantor or any
     other entity) for any previous advance of delinquent installments of
     principal and interest (adjusted to the applicable Remittance Rate) in
     respect of any Mortgage Loan or Contract to the extent of recoveries,
     including late payments and liquidation proceeds, on such Mortgage Loan or
     Contract;
 
          (vi) To reimburse the Company from any borrower payment of interest or
     other recovery with respect to a particular Mortgage Loan, to the extent
     not previously retained by the Company, for unpaid servicing fees with
     respect to such Mortgage Loan, subject to certain limitations;
 
          (vii) To reimburse the Company (or, if applicable, the Trustee, the
     Guarantor or any other entity) for any Nonrecoverable Advance;
 
          (viii) To transfer funds to the Certificate Account; and
 
          (ix) To deduct any amount credited to the Loan Payment Record in
     error.
 
     In addition, if specified in the Prospectus Supplement relating to a Trust
Fund which includes second-priority Home Equity Loans, the Company will be
entitled to be reimbursed, out of payments received on a second-priority Home
Equity Loan, for funds advanced to keep the related senior mortgages current.
 
                                       46

<PAGE>

     On the date or dates specified in the Prospectus Supplement (each, a
'Deposit Date') prior to each Distribution Date, unless otherwise specified in
the Prospectus Supplement, the Company will transfer to the Certificate Account
the payments in respect of the Mortgage Loans or Contracts described above, net
of any debits made thereto as described above, which were received by it after
the Cut-off Date and before the fifth business day next preceding such
Distribution Date (the 'Determination Date'), together with any required
advances of delinquent principal and interest payments to be made by it, except
(i) Principal Prepayments received during the month of such deposit (other than
as described in the next sentence) and all related payments of interest
representing interest for the month of deposit or any portion thereof and (ii)
payments which represent early receipt of scheduled payments of principal and
interest due on a date or dates subsequent to the first day of the month of
deposit. In addition, unless otherwise specified in the Prospectus Supplement,
the Company will transfer to the Certificate Account (i) the amount of any
voluntary prepayment in full (net of any interest thereon) received by the
Company (or, in the case of a Mortgage Loan master-serviced by the Company, of
which the Company receives notice) during the period from the first day through
the fifteenth day of the month of such Distribution Date and any payment made by
the Company in connection with the repurchase of a Mortgage Loan that has been
modified in lieu of refinancing during such period and (ii) the amount of any
Compensating Interest Payment for such Distribution Date, as described in the
Prospectus Supplement. The net amounts described in the two preceding sentences
are the 'Available Funds' for a series of Certificates with respect to any
Distribution Date, provided that such Available Funds shall not include
Unanticipated Recoveries. Unless otherwise specified in the Prospectus
Supplement, all transfers by the Company to the Certificate Account will be made
by transfer of next-day funds. Although such next-day funds may have been
credited to the Certificate Account, until such funds become available to the
Trustee under applicable law and procedures relating to such transfers, such
funds will not be available to Certificateholders. Unless otherwise specified in
the Prospectus Supplement, prior to transferring such funds, the Company may
commingle payments received in respect of the Mortgage Loans or Contracts and
may invest such payments for its own account. Income realized on the investment
of such payments pending deposit into the Certificate Account will be retained
by the Company as additional servicing compensation.
 
     As a result of the Company's access to payments received in respect of the
Mortgage Loans prior to the time such payments become available to the Trustee
in the Certificate Account, creditors or a trustee-in-bankruptcy for the Company
may be able to assert rights in such payments superior to those of the Trustee.
 
     If specified in the Prospectus Supplement, the Company may establish, or
provide for the establishment of, an account (the 'Collection Account') in lieu
of the Loan Payment Record described above. If so specified, all amounts to be
credited or debited to the Loan Payment Record will instead be deposited in or
withdrawn from the Collection Account.
 
SERVICING AND OTHER COMPENSATION AND PAYMENT OF EXPENSES
 
     Unless otherwise specified in the Prospectus Supplement, the Company's
primary compensation for its servicing activities will come from the payment to
it, with respect to each interest payment on a Mortgage Loan or Contract, of all
or a portion of the difference between the Mortgage Rate for such Mortgage Loan
or Contract and the related Remittance Rate. In addition to the primary
compensation, the Company will retain all assumption fees, late payment charges
and other miscellaneous charges, including prepayment penalties, all to the
extent collected from borrowers and, unless otherwise specified in the
Prospectus Supplement, the investment income described in the second preceding
paragraph. In the event the Company or another institution is acting as master
servicer under an Agreement, the master servicer will receive compensation with
respect to the performance of its activities as master servicer.
 
     Unless otherwise specified in the Prospectus Supplement, the Company will
be responsible for paying all expenses incurred in connection with the servicing
of the Mortgage Loans or Contracts (subject to limited reimbursement as
described in 'Loan Payment Record' above), including, without limitation,
payment of any premium for any Advance Guarantee, Liquidating Loan Guarantee,
Deposit Guarantee, pool insurance policy, special hazard policy, bankruptcy
bond, repurchase bond or other guarantee or surety, payment of the fees and the
disbursements of the Trustee, the Administrator (if any) and the independent
accountants, payment of the compensation of any direct servicers of the Mortgage
Loans, payment of all fees and expenses in connection with the realization upon
defaulted Mortgage Loans or Contracts and payment of expenses incurred in
connection with
 
                                       47

<PAGE>

distributions and reports to Certificateholders. Unless otherwise specified in
the Prospectus Supplement, the Company may assign any of its primary servicing
compensation in excess of that amount customarily retained as servicing
compensation for similar assets.
 
RESIGNATION, SUCCESSION AND INDEMNIFICATION OF THE COMPANY
 
     The Agreement will provide that, except as described in the second and
third succeeding paragraphs, the Company may not resign from its obligations and
duties as servicer or master servicer thereunder, except upon determination that
the Company's performance of such duties is no longer permissible under
applicable law or as provided in the last paragraph under this heading. No such
resignation will become effective until the Trustee or a successor has assumed
the Company's servicing obligations and duties under such Agreement. The
Guarantor's obligations under any Advance Guarantee, Liquidating Loan Guarantee
or Deposit Guarantee will, upon issuance thereof, be irrevocable, subject to
certain limited rights of assignment as described in the Prospectus Supplement
if applicable.
 
     The Agreement will provide that neither the Company nor, if applicable, the
Guarantor, nor any of their respective directors, officers, employees or agents,
shall be under any liability to the Trust Fund or the Certificateholders of the
related series for taking any action or for refraining from taking any action
pursuant to such Agreement, or for errors in judgment; provided, however, that
neither the Company nor, if applicable, the Guarantor, nor any such person, will
be protected against any liability which would otherwise be imposed by reason of
willful misfeasance, bad faith or gross negligence in the performance of duties
or by reason of reckless disregard of obligations and duties thereunder. The
Agreement will also provide that the Company and, if applicable, the Guarantor
and their respective directors, officers, employees and agents are entitled to
indemnification by the related Trust Fund and will be held harmless against any
loss, liability or expense incurred in connection with any legal action relating
to the Agreement or the Certificates, other than any loss, liability or expense
related to any specific Mortgage Loan or Contract (except as otherwise
reimbursable under the Agreement) or incurred by reason of willful misfeasance,
bad faith or gross negligence in the performance of duties thereunder or by
reason of reckless disregard of obligations and duties thereunder. In addition,
each Agreement will provide that neither the Company nor, if applicable, the
Guarantor is under any obligation to appear in, prosecute or defend any legal
action which is not incidental to the Company's servicing responsibilities under
such Agreement or the Guarantor's payment obligations under any Limited
Guarantee, respectively, and which in its respective opinion may involve it in
any expense or liability. Each of the Company and, if applicable, the Guarantor
may, however, in its respective discretion undertake any such action which it
may deem necessary or desirable in respect of such Agreement and the rights and
duties of the parties thereto and the interests of the Certificateholders
thereunder. In such event, the legal expenses and costs of such action and any
liability resulting therefrom will be expenses, costs and liabilities of the
Trust Fund, and the Company and, if applicable, the Guarantor, will be entitled
to be reimbursed therefor from amounts credited to the Loan Payment Record.
 
     Any corporation into which the Company may be merged or consolidated or any
corporation resulting from any merger, conversion or consolidation to which the
Company is a party, or any corporation succeeding to the business of the
Company, or any corporation more than 50% of the voting stock of which is owned,
directly or indirectly, by General Electric Company, or any limited partnership,
the sole general partner of which is either the Company or a corporation more
than 50% of the voting stock of which is owned, directly or indirectly, by
General Electric Company, which assumes the obligations of the Company, will be
the successor of the Company under each Agreement.
 
     The Company also has the right to assign its rights, and delegate its
duties and obligations, as servicer under the Agreement for each series of
Certificates; provided that (i) the purchaser or transferee accepting such
assignment or delegation is qualified to service mortgage loans for FNMA or
FHLMC, is reasonably satisfactory to the Trustee for such series of Certificates
and executes and delivers to the Trustee an agreement, in form and substance
reasonably satisfactory to the Trustee, which contains an assumption by such
purchaser or transferee of the due and punctual performance and observance of
each covenant and condition to be performed or observed by the servicer under
the Agreement from and after the date of such agreement and (ii) each applicable
Rating Agency's rating of any Certificates of such series in effect immediately
prior to such assignment or delegation would not be qualified, downgraded or
withdrawn as a result thereof. In the case of any such assignment or delegation,
the Company will be released from its obligations as servicer under the
Agreement except for liabilities and obligations incurred prior to such
assignment or delegation.
 
                                       48

<PAGE>

                      THE POOLING AND SERVICING AGREEMENT
 
     The following summaries describe certain provisions of the Pooling and
Servicing Agreements. The summaries do not purport to be complete and are
subject to, and qualified in their entirety by reference to, the provisions of
the Pooling and Servicing Agreements. Where particular provisions or terms used
in the Pooling and Servicing Agreements are referred to, such provisions or
terms are as specified in the Pooling and Servicing Agreements. Each of the
Pooling and Servicing Agreements may establish one or more Trust Funds.
 
ASSIGNMENT OF ASSETS
 
     Assignment of the Mortgage Loans.  At the time of issuance of a series of
Certificates, the Company, as seller, will assign the related Mortgage Loans to
the Trustee, together with all principal and interest, subject to exclusions
specified in the Prospectus Supplement, received by the Company on or with
respect to such Mortgage Loans on or after the Cut-off Date other than principal
and interest due and payable on or before, and Principal Prepayments received
before, the Cut-off Date. The Trustee will, concurrently with such assignment,
execute, countersign and deliver the Certificates to the Company in exchange for
the Mortgage Loans. Each Mortgage Loan will be identified in a schedule
appearing as an exhibit to the Agreement. Such schedule will include information
as to the Principal Balance of each Mortgage Loan as of the Cut-off Date, as
well as information respecting the Mortgage Rate, the scheduled monthly payment
of principal and interest as of the Cut-off Date and the maturity date of each
Mortgage Note.
 
     In addition, as to each Mortgage Loan, the Company, as seller, will deliver
to the Trustee, unless otherwise specified in the Prospectus Supplement or as
described below, the Mortgage Note and Mortgage, any assumption and modification
agreement and an assignment of the Mortgage to the Trustee in recordable form
(other than in respect of unavailable recording information). In addition,
unless otherwise specified in the Prospectus Supplement, the Company will also
deliver to the Trustee originals of the recorded Mortgages, any intervening
assignments of the Mortgages and title insurance policies with respect to the
Mortgage Loans, as promptly as practicable, and in any case within thirty days,
after receiving all such documents from the applicable recording offices and
title insurance companies. Pending such delivery, the Company will retain and
furnish to the Trustee upon request copies of the Mortgages and intervening
assignments of Mortgage delivered for recording and the evidence of title
insurance issued at origination of the Mortgage Loans. The Company will retain
and furnish to the Trustee upon request any applicable evidence of primary
mortgage insurance so long as such insurance remains in force.
 
     The Company may deliver to the Trustee, in lieu of the original Mortgage
Note, a new promissory note signed by the borrower confirming its obligation
under the original Mortgage Note (a 'Confirmatory Mortgage Note'). Furthermore,
a Trust Fund may include Mortgage Loans where the original Mortgage Note or a
Confirmatory Mortgage Note is not delivered to the Trustee if the Company
instead delivers to the Trustee an affidavit certifying that the Company was the
sole owner of the indebtedness evidenced by such note and the original thereof
has been lost or destroyed and the Company indemnifies the Trust Fund against
any loss, liability, damage, claim or expense resulting from the Company's
failure to have delivered the original Mortgage Note or Confirmatory Mortgage
Note. Such indemnification will be terminated if the Company subsequently
delivers to the Trustee the original Mortgage Note or a Confirmatory Mortgage
Note. Unless otherwise specified in the applicable Prospectus Supplement, no
more than 1% of the Mortgage Loans in any Mortgage Pool, measured by Principal
Balance as of the related Cut-Off Date, may consist of Mortgage Loans as to
which the Company has failed to deliver the original Mortgage Note or
Confirmatory Mortgage Note.
 
     Unless otherwise specified in the Prospectus Supplement, the Company may
refrain from recording the assignments of the Mortgage Loans prior to the
occurrence of certain events set forth in the related Agreement. Although such
recordation is not necessary to make the assignment of the Mortgage Loans to the
Trustee effective, if the Company were to make a sale, assignment, satisfaction
or discharge of any Mortgage Loan prior to recording or filing the assignments
to the Trustee, the other parties to such sale, assignment, satisfaction or
discharge might have rights superior to those of the Trustee. If the Company
were to do so without authority under the Agreement, it would be liable to the
related Certificateholders. Moreover, if insolvency proceedings relating to the
Company were commenced prior to such recording or filing, creditors of the
Company may be able to assert rights in the affected Mortgage Loans superior to
those of the Trustee.
 
                                       49

<PAGE>

     With respect to any Mortgage Loans which are Cooperative Loans, the
Company, as seller, will cause to be delivered to the Trustee the related
original cooperative note endorsed to the order of the Trustee (or the lost-note
affidavit and indemnification described in the second preceding paragraph), the
original security agreement, the proprietary lease or occupancy agreement, the
recognition agreement, an executed financing agreement and the relevant stock
certificate and related blank stock powers. The Company will file in the
appropriate office an assignment and a financing statement evidencing the
Trustee's security interest in each Cooperative Loan.
 
     Unless otherwise specified in the related Prospectus Supplement, in the
Agreement the Company, as seller, generally will represent and warrant to the
Trustee, among other things, that (i) the information set forth in the schedule
of Mortgage Loans attached thereto is correct in all material respects at the
date or dates respecting which such information is furnished; (ii) a lender's
title insurance policy or binder, or other assurance of title insurance
customary in the relevant jurisdiction therefor, for each Mortgage Loan subject
to the Agreement was issued on the date of origination thereof and each such
policy or binder assurance is valid and remains in full force and effect; (iii)
at the date of initial issuance of the Certificates, the Company has good title
to the Mortgage Loans and the Mortgage Loans are free of offsets, defenses or
counterclaims; (iv) at the date of initial issuance of the Certificates, each
Mortgage is a valid first or, in the case of a second priority Home Equity Loan,
second lien on the property securing the Mortgage Note (subject only to (a) the
lien of current real property taxes and assessments, (b) covenants, conditions,
and restrictions, rights of way, easements and other matters of public record as
of the date of the recording of such Mortgage, such exceptions appearing of
record being acceptable to mortgage lending institutions generally in the area
wherein the property subject to the Mortgage is located or specifically
reflected in the appraisal obtained by the Company, (c) in the case of a
second-priority Home Equity Loan, the lien of the related first mortgage, and
(d) other matters to which like properties are commonly subject which do not
materially interfere with the benefits of the security intended to be provided
by such Mortgage) and such property is free of material damage and is in good
repair; (v) at the date of initial issuance of the Certificates, no Mortgage
Loan is 30 or more days delinquent and there are no delinquent tax or assessment
liens against the property covered by the related Mortgage; (vi) at the date of
initial issuance of the Certificates, the portion of each Mortgage Loan, if any,
which in the circumstances set forth above under 'Servicing of the Mortgage
Loans--Private Mortgage Insurance' should be insured with a private mortgage
insurer is so insured; and (vii) each Mortgage Loan at the time it was made
complied in all material respects with applicable state and federal laws,
including, without limitation, usury, equal credit opportunity and disclosure
laws.
 
     In the event that the Company has acquired the Mortgage Loans for a series,
if so specified in the related Prospectus Supplement, the Company may, in lieu
of making the representations described in the preceding paragraph, cause the
entity from which the Company acquired such Mortgage Loans to make such
representations (other than those regarding the Company's title to the Mortgage
Loans, which will in all events be made by the Company), in the sales agreement
pursuant to which such Mortgage Loans are acquired, or if such entity is acting
as a servicer, in its servicing agreement. In such event such representations,
and the Company's rights against such entity in the event of a breach thereof,
will be assigned to the Trustee for the benefit of the holders of the
Certificates of such series.
 
     Assignment of Agency Securities.  The Company, as seller, will cause the
Agency Securities to be registered in the name of the Trustee or its nominee,
and the Trustee concurrently will execute, countersign and deliver the
Certificates. Each Agency Security will be identified in a schedule appearing as
an exhibit to the Agreement, which will specify as to each Agency Security the
original principal amount and outstanding principal balance as of the Cut-off
Date, the annual pass-through rate (if any) and the maturity date. The Company
will represent and warrant to the Trustee, among other things, that the
information contained in the Agency Securities schedule is true and correct and
that immediately prior to the transfer of the Agency Securities to the Trustee,
the Company had good title to, and was the sole owner of, each Agency Security.
 
     Assignment of Contracts.  The Company, as seller, will cause the Contracts
to be assigned to the Trustee, together with principal and interest due on or
with respect to the Contracts after the Cut-off Date specified in the related
Prospectus Supplement. Each Contract will be identified in a loan schedule
appearing as an exhibit to the related Agreement. Such loan schedule will
specify, with respect to each Contract, among other things: the original
principal balance and the outstanding principal balance as of the close of
business on the Cut-off Date; the interest rate; the current scheduled payment
of principal and interest; and the maturity date.
 
                                       50

<PAGE>

     In addition, with respect to each Contract, the Company will deliver or
cause to be delivered to the Trustee, the original Contract and copies of
documents and instruments related to each Contract and the security interest in
the Manufactured Home securing each Contract. To give notice of the right, title
and interest of the Certificateholders to the Contracts, the Company will cause
a UCC-1 financing statement to be filed identifying the Trustee as the secured
party and identifying all Contracts as collateral. Unless otherwise specified in
the related Prospectus Supplement, the Contracts will not be stamped or
otherwise marked to reflect their assignment from the Company to the Trustee.
Therefore, if a subsequent purchaser were able to take physical possession of
the Contracts without notice of such assignment, the interest of the
Certificateholders in the Contracts could be defeated. See 'Certain Legal
Aspects of the Mortgage Loans and Contracts'.
 
     The Company, as seller, will provide limited representations and warranties
to the Trustee concerning the Contracts. Such representations and warranties
will include: (i) that the information contained in the loan schedule provides
an accurate listing of the Contracts and that the information respecting such
Contracts set forth in such loan schedule is true and correct in all material
respects at the date or dates respecting which such information is furnished;
(ii) that, immediately prior to the conveyance of the Contracts, the Company had
good title to, and was sole owner of, each such Contract; and (iii) that there
has been no other sale by it of such Contract and that the Contract is not
subject to any lien, charge, security interest or other encumbrance.
 
REPURCHASE OR SUBSTITUTION
 
     The Trustee will review the documents delivered to it with respect to the
assets of the related Trust Fund. Unless otherwise specified in the Prospectus
Supplement, if any document is not delivered or is found to be defective in any
material respect and the Company cannot deliver such document or cure such
defect within 60 days after notice thereof (which the Trustee will undertake to
give within 45 days of the delivery of such documents), the Company will, not
later than the first Distribution Date which is more than ten days after such
60-day period, (a) remove the affected Mortgage Loan or Contract from the Trust
Fund and substitute one or more other mortgage loans or contracts therefor or
(b) repurchase the Mortgage Loan or Contract from the Trustee for a price equal
to 100% of its Principal Balance plus interest thereon at the applicable
Remittance Rate from the date on which interest was last paid to the first day
of the month in which such purchase price is to be distributed, net of any
unreimbursed advances of principal and interest thereon made by the Company as
servicer. Such purchase price will be deposited in the Certificate Account on
the business day preceding such Distribution Date. Unless otherwise provided in
the Agreement, this repurchase and substitution obligation will constitute the
sole remedy available to Certificateholders or the Trustee on behalf of
Certificateholders against the Company for a material defect in a document
relating to a Mortgage Loan or Contract.
 
     Unless otherwise specified in the Prospectus Supplement, the Company will
agree to either (a) cure in all material respects any breach of any
representation or warranty set forth in the related Agreement that materially
and adversely affects the interests of the Certificateholders in a Mortgage Loan
(a 'Defective Mortgage Loan') or Contract within 60 days of its discovery by the
Company or its receipt of notice thereof from the Trustee, (b) repurchase such
Defective Mortgage Loan or Contract not later than the first Distribution Date
which is more than ten days after such 60-day period for a price equal to 100%
of its Principal Balance plus interest thereon at the applicable Remittance Rate
from the date on which interest was last paid to the first day of the month in
which such purchase price is to be distributed, net of any unreimbursed advances
of principal and interest thereon made by the Company as servicer, or (c) remove
the affected Mortgage Loan or Contract from the Trust Fund and substitute one or
more other mortgage loans or contracts therefor. Such purchase price will be
deposited in the Certificate Account on the business day preceding such
Distribution Date. Unless otherwise provided in the Agreement, this repurchase
or substitution obligation will constitute the sole remedy available to
Certificateholders or the Trustee on behalf of Certificateholders for any such
breach.
 
     If so specified in the Prospectus Supplement for a series where the Company
has acquired the related Mortgage Loans, in lieu of agreeing to repurchase or
substitute Mortgage Loans as described above, the Company may obtain such an
agreement from the entity which sold such mortgage loans, which agreement will
be assigned to the Trustee for the benefit of the holders of the Certificates of
such series. In such event, unless otherwise specified in the related Prospectus
Supplement, the Company will have no obligation to repurchase or substitute
mortgage loans if such entity defaults in its obligation to do so.
 
                                       51

<PAGE>

     If a mortgage loan or contract is substituted for another Mortgage Loan or
Contract as described above, the new mortgage loan or contract will, unless
otherwise specified in the Prospectus Supplement, (i) have a Principal Balance
(together with any other new mortgage loan or contract so substituted), as of
the first Distribution Date following the month of substitution, after deduction
of all payments due in the month of substitution, not in excess of the Principal
Balance of the removed Mortgage Loan or Contract as of such Distribution Date
(the amount of any shortfall, plus one month's interest thereon at the
applicable Remittance Rate, to be deposited in the Certificate Account on the
business day prior to the applicable Distribution Date), (ii) have a Mortgage
Rate not less than, and not more than one percentage point greater than, that of
the removed Mortgage Loan or Contract, (iii) have a Remittance Rate equal to
that of the removed Mortgage Loan or Contract, (iv) have a remaining term to
stated maturity not later than, and not more than one year less than, the
remaining term to stated maturity of the removed Mortgage Loan or Contract, (v)
have a current loan to Original Value not greater than that of the removed
Mortgage Loan or Contract, and (vi) in the reasonable determination of the
Company, be of the same type, quality and character as the removed Mortgage Loan
or Contract (as if the defect or breach giving rise to the substitution had not
occurred) and be, as of the substitution date, in compliance with the
representations and warranties contained in the Agreement.
 
     If a REMIC election is to be made with respect to all or a portion of a
Trust Fund, any such substitution will occur within two years after the initial
issuance of the related Certificates. If no REMIC election is made, any
substitution will be made within 90 days after the initial issuance of the
related Certificates.
 
CERTAIN REFINANCINGS
 
     The Agreement will provide that if the Company in its individual capacity
agrees to refinance any Mortgage Loan upon the request of the related Mortgagor,
such Mortgage Loan will be assigned to the Company by the Trustee upon
certification that the Principal Balance of such Mortgage Loan and accrued and
unpaid interest thereon at the Remittance Rate has been credited to the related
Loan Payment Record.
 
EVIDENCE AS TO COMPLIANCE
 
     The Agreement will provide that a firm of independent public accountants
will furnish to the Trustee on or before March 31 of each year, beginning with
March 31 in the year which begins not less than three months after the date of
the initial issue of Certificates, a report as to compliance by the Company with
the minimum servicing standards set forth in the Uniform Single Attestation
Program for Mortgage Bankers ('USAP') with respect to the mortgage loans (or, if
the Agreement relates to Home Equity Loans, with respect to the home equity
loans) in the Company's servicing portfolio. In connection with the preparation
of such report, the Company will provide to such firm of independent public
accountants a statement signed by an officer of the Company to the effect that
the Company has complied in all material respects with the minimum servicing
standards set forth in the USAP with respect to the mortgage loans (or, if the
Agreement relates to Home Equity Loans, with respect to the home equity loans)
in the Company's servicing portfolio or, if there has been material
noncompliance with such servicing standards, describing such noncompliance.
 
     The Agreement will also provide for delivery to the Trustee on or before
March 31 of each year, beginning with March 31 in the year which begins not less
than three months after the date of the initial issue of the Certificates, a
statement signed by an officer of the Company, as servicer, to the effect that
the Company, as servicer, has fulfilled its material obligations under the
Agreement throughout the preceding year or, if there has been a default in the
fulfillment of any such obligations, describing each such default.
 
LIST OF CERTIFICATEHOLDERS
 
     Upon written request of the Trustee, or, if the Guarantor has issued any
Limited Guarantee with respect to such Certificates, the Guarantor, the
Certificate Registrar will provide to the Trustee, or, if applicable, the
Guarantor, within fifteen days after receipt of such request, a list of the
names and addresses of all Certificateholders of record of a particular series
as of the most recent Record Date for payment of distributions to
Certificateholders of that series. Upon written request of three or more
Certificateholders of record of a series of Certificates for purposes of
communicating with other Certificateholders with respect to their rights under
the Agreement for such series, the Trustee will afford, within five business
days after the receipt of such request,
 
                                       52

<PAGE>

such Certificateholders access during business hours to the most recent list of
Certificateholders of that series held by the Trustee. If such list is as of a
date more than 90 days prior to the date of receipt of a request from such
Certificateholders, the Trustee shall promptly request from the Certificate
Registrar a current list and will afford such requesting Certificateholders
access to such list promptly upon receipt.
 
     The Agreement will not provide for the holding of any annual or other
meetings of Certificateholders.
 
THE TRUSTEE
 
     Any commercial bank or trust company serving as Trustee may have normal
banking relationships with the Company. In addition, the Company and the Trustee
acting jointly will have the power and the responsibility for appointing
co-trustees or separate trustees of all or any part of the Trust Fund relating
to a particular series of Certificates. In the event of such appointment, all
rights, powers, duties and obligations conferred or imposed upon the Trustee by
the Agreement shall be conferred or imposed upon the Trustee and such separate
trustee or co-trustee jointly, or, in any jurisdiction in which the Trustee
shall be incompetent or unqualified to perform certain acts, singly upon such
separate trustee or co-trustee who shall exercise and perform such rights,
powers, duties and obligations solely at the direction of the Trustee.
 
     The Trustee will make no representations as to the validity or sufficiency
of the Agreement, the Certificates (other than the signature and
countersignature of the Trustee on the Certificates) or of any Mortgage Loan,
Agency Security, Contract or related document, and will not be accountable for
the use or application by the Company of any funds paid to the Company in
respect of the Certificates or the related assets, or amounts credited to the
Loan Payment Record or deposited into the Certificate Account. If no Event of
Default has occurred, the Trustee will be required to perform only those duties
specifically required of it under the Agreement. However, upon receipt of the
various certificates, reports or other instruments required to be furnished to
it, the Trustee will be required to examine them to determine whether they
conform to the requirements of the Agreement.
 
     The Trustee may resign at any time, and the Company may remove the Trustee
if the Trustee ceases to be eligible to continue as such under the Agreement, if
the Trustee becomes insolvent or in such other instances, if any, as are set
forth in the Agreement. Following any resignation or removal of the Trustee, the
Company will be obligated to appoint a successor Trustee, any such successor to
be approved by the Guarantor if so specified in the Prospectus Supplement in the
event that the Guarantor has issued any Limited Guarantee with respect to the
Certificates. Any resignation or removal of the Trustee and appointment of a
successor Trustee does not become effective until acceptance of the appointment
by the successor Trustee.
 
ADMINISTRATION OF THE CERTIFICATE ACCOUNT
 
     The Agreement will require that the Certificate Account be either (i)
maintained with a depository institution the debt obligations of which are, at
the time of any deposit therein, rated at least 'AA' (or the equivalent) by each
nationally recognized statistical rating organization that rated the
Certificates, (ii) an account or accounts the deposits in which are fully
insured by either the Bank Insurance Fund (the 'BIF') of the Federal Deposit
Insurance Corporation (the 'FDIC') or the Savings Association Insurance Fund (as
successor to the Federal Savings and Loan Insurance Corporation) ('SAIF') of the
FDIC, (iii) an account or accounts with a depository institution, which accounts
are insured by the BIF or SAIF (to the limits established by the FDIC), and
which uninsured deposits are invested in United States government securities or
other high quality investments, or are otherwise secured to the extent required
by each rating agency that rates the Certificates such that, as evidenced by an
opinion of counsel, the holders of the Certificates have a claim with respect to
the funds in the account or a perfected first security interest against any
collateral securing such funds that is superior to claims of any other
depositors or creditors of the depository institution with which the account is
maintained, (iv) a trust account maintained with the corporate trust department
of a federal or state chartered depository institution or trust company with
trust powers and acting in its fiduciary capacity for the benefit of the Trustee
or (v) an account as will not cause any of the rating agencies that rates the
Certificates to downgrade or withdraw its then-current rating assigned to the
Certificates.
 
     Not later than the second business day prior to each Distribution Date, the
Company, as servicer, will furnish a separate statement to the Trustee for the
Certificates setting forth, among other things, the amount to be
 
                                       53

<PAGE>

distributed with respect to the Certificates on the next succeeding Distribution
Date to Certificateholders, with amounts allocable to principal and to interest
stated separately and, if applicable, information relating to the amount
available for the purchase of Liquidating Loans.
 
REPORTS TO CERTIFICATEHOLDERS
 
     At least two Business Days before each Distribution Date, unless otherwise
specified in the Prospectus Supplement, the Company, as servicer, will furnish
to the Trustee for mailing to Certificateholders on such Distribution Date, a
statement generally setting forth, to the extent applicable to any series, among
other things:
 
          (i) The aggregate amount of such distribution allocable to principal,
     separately identifying the amount allocable to each class and the amount of
     Principal Prepayments (and Mortgage Loans repurchased by the Company)
     included therein;
 
          (ii) The amount of such distribution allocable to interest, separately
     identifying the amount allocable to each class;
 
          (iii) The amount of servicing compensation received by the Company in
     respect of the Mortgage Loans during the month preceding the month of the
     Distribution Date, and such other customary information as the Company
     deems necessary or desirable to enable Certificateholders to prepare their
     tax returns;
 
          (iv) The aggregate Certificate Principal Balance (or Notional
     Principal Balance) of each class of Certificates after giving effect to
     distributions and allocations, if any, of losses on the Mortgage Loans on
     such Distribution Date;
 
          (v) The aggregate Certificate Principal Balance of any class of
     Accrual Certificates after giving effect to any increase in such
     Certificate Principal Balance that results from the accrual of interest
     that is not yet distributable thereon;
 
          (vi) If applicable, the amount of the Company's remaining obligations
     with respect to the purchase of Liquidating Loans, after giving effect to
     any charges or adjustments thereto in respect of the Distribution Date,
     expressed as a percentage of the amount reported pursuant to clause (iv)
     and, if applicable, (v) above;
 
          (vii) The aggregate Principal Balance and number of the Mortgage Loans
     included in the related Trust Fund after giving effect to distributions of
     principal made on such Distribution Date; and
 
          (viii) The aggregate Principal Balance of Mortgage Loans which were
     delinquent as to a total of one, two or three or more installments of
     principal and interest or were in foreclosure as of the end of the
     preceding calendar month.
 
     The Company will also furnish annually customary information deemed
necessary for Certificateholders to prepare their tax returns.
 
     The Company, as servicer, will provide Certificateholders which are
federally insured savings and loan associations with certain reports and with
access to information and documentation regarding the Mortgage Loans included in
the Trust Fund sufficient to permit such associations to comply with applicable
regulations of the Office of Thrift Supervision.
 
EVENTS OF DEFAULT
 
     Events of Default under the Agreement will consist of: (i) any failure by
the Company, as servicer, to distribute to Certificateholders any required
payment, which failure continues unremedied for three business days after the
giving of written notice of such failure to the Company by the Trustee, or to
the Company and the Trustee by the holders of Certificates evidencing interests
aggregating not less than 25% of each affected class; (ii) any failure by the
Company, as servicer, duly to observe or perform in any material respect any
other of its covenants or agreements in such Agreement materially affecting the
rights of Certificateholders which continues unremedied for 60 days after the
giving of written notice of such failure to the Company by the Trustee, or to
the Company and the Trustee by the holders of Certificates evidencing interests
aggregating not less than 25% of each affected class; (iii) any failure by the
Company, as servicer, to effect timely payment of the premium for a pool
insurance policy or a special hazard insurance policy or Limited Guarantee, if
any, which continues
 
                                       54

<PAGE>

unremedied for 10 Business Days after the giving of written notice of such
failure by the Trustee, or to the Company and the Trustee by the holders of
Certificates evidencing interests aggregating not less than 25% of each affected
class; and (iv) certain events of insolvency, readjustment of debt, marshaling
of assets and liabilities or similar proceedings and certain actions by the
Company indicating its insolvency, reorganization or inability to pay its
obligations.
 
RIGHTS UPON EVENT OF DEFAULT
 
     As long as an Event of Default under the Agreement remains unremedied by
the Company, as servicer (or, if applicable, by the Guarantor pursuant to any
Limited Guarantee), the Trustee, or holders of Certificates evidencing interests
aggregating not less than 51% of each affected class, may terminate all of the
rights and obligations of the Company as servicer under the Agreement, whereupon
the Trustee will succeed to all the responsibilities, duties and liabilities of
the Company as servicer under the Agreement and will be entitled to similar
compensation arrangements, provided that if the Trustee had no obligation under
the Agreement to make advances of delinquent principal and interest on the
Mortgage Loans upon the failure of the Company, as servicer, to do so, or if the
Trustee had such obligation but is prohibited by law or regulation from making
such advances, the Trustee will not be required to assume such obligation of the
Company. The Company, as servicer, shall be entitled to payment of certain
amounts payable to it under the Agreement, notwithstanding the termination of
its activities as servicer. No such termination will affect in any manner the
Guarantor's obligations under any Limited Guarantee, except that the obligation
of the Company, as servicer, to make advances of delinquent payments of
principal and interest (adjusted to the applicable Remittance Rate) and, if
applicable, to purchase any Liquidating Loan will become the direct obligations
of the Guarantor under the Advance Guarantee and the Liquidating Loan Guarantee,
respectively, if applicable, until a new servicer is appointed. In the event
that the Trustee is unwilling or unable so to act, it may appoint, or petition a
court of competent jurisdiction for the appointment of, a housing and home
finance institution with a net worth of at least $10,000,000 and, if the
Guarantor has issued any Limited Guarantee with respect to the Certificates,
approved by the Guarantor, to act as successor to the Company, as servicer,
under such Agreement. In addition, if the Guarantor has issued any Limited
Guarantee with respect to the related series of Certificates, the Guarantor will
have the right to replace any successor servicer to the Company with an
institution meeting the requirements described in the preceding sentence. The
Trustee and such successor may agree upon the servicing compensation to be paid,
which in no event may be greater than the compensation to the Company under such
Agreement.
 
     No holder of Certificates will have any right under the Agreement to
institute any proceeding with respect to the Agreement, unless such holder
previously has given to the Trustee written notice of default and unless the
holders of Certificates of each affected class evidencing, in the aggregate, 25%
or more of the interests in such class have made written request to the Trustee
to institute such proceeding in its own name as Trustee thereunder and have
offered to the Trustee reasonable indemnity and the Trustee for 60 days after
receipt of such notice, request and offer of indemnity has neglected or refused
to institute any such proceedings. However, the Trustee is under no obligation
to exercise any of the trusts or powers vested in it by the Agreement or to make
any investigation of matters arising thereunder or to institute, conduct or
defend any litigation thereunder or in relation thereto at the request, order or
direction of any of the Certificateholders, unless such Certificateholders have
offered to the Trustee reasonable security or indemnity against the costs,
expenses and liabilities which may be incurred therein or thereby.
 
AMENDMENT
 
     The Agreement may be amended by the Company, as seller, the Company, as
servicer, and the Trustee, and if the Guarantor has issued any Limited Guarantee
with respect to the Certificates, with the consent of the Guarantor, but without
Certificateholder consent, to cure any ambiguity, to correct or supplement any
provision therein which may be inconsistent with any other provision therein, to
take any action necessary to maintain REMIC status of any Trust Fund as to which
a REMIC election has been made, to avoid or minimize the risk of the imposition
of any tax on the Trust Fund pursuant to the Code or to make any other
provisions with respect to matters or questions arising under the Agreement
which are not materially inconsistent with the provisions of the Agreement;
provided that such action will not, as evidenced by an opinion of counsel
satisfactory to the Trustee, adversely affect in any material respect the
interests of any Certificateholders of that series. Unless otherwise
 
                                       55

<PAGE>

specified in the Prospectus Supplement, the Agreement may also be amended by the
Company, as seller, the Company, as servicer, and the Trustee with the consent
of holders of Certificates evidencing interests aggregating either not less than
66% of all interests in the related Trust Fund or not less than 66% of all
interests of each Class affected by such amendment, for the purpose of adding
any provisions to or changing in any manner or eliminating any of the provisions
of such Agreement or of modifying in any manner the rights of Certificateholders
of that series; provided, however, that no such amendment may (i) reduce in any
manner the amount of, or delay the timing of, payments received on Mortgage
Loans which are required to be distributed in respect of any Certificate without
the consent of the holder of such Certificate, (ii) adversely affect in any
material respect the interests of the holders of any class of Certificates in
any manner other than as described in (i), without the consent of the holders of
Certificates of such class evidencing at least 66% of the interests of such
class or (iii) reduce the aforesaid percentage of Certificates, the holders of
which are required to consent to any such amendment, without the consent of the
holders of all Certificates of such affected class then outstanding.
 
TERMINATION
 
     The obligations of the Company, as seller, the Company, as servicer, and
the Trustee created by the Agreement will terminate upon the last action
required to be taken by the Trustee on the final Distribution Date pursuant to
the Agreement after the earlier of (i) the maturity or other liquidation of the
last Mortgage Loan, Agency Security or Contract subject thereto or the
disposition of all property acquired upon foreclosure of any such Mortgage Loan
or Contract or (ii) the repurchase by the Company from the Trust Fund of all the
outstanding Certificates or all remaining assets in the Trust Fund. The
Agreement will establish the repurchase price for the assets in the Trust Fund
and the allocation of such purchase price among the classes of Certificates. The
exercise of such right will effect early retirement of the Certificates of that
series, but the Company's right so to repurchase will be subject to the
conditions set forth in the related Prospectus Supplement. If a REMIC election
is to be made with respect to all or a portion of a Trust Fund, there may be
additional conditions to the termination of such Trust Fund which will be
described in the related Prospectus Supplement. In no event, however, will the
trust created by the Agreement continue beyond the expiration of 21 years from
the death of the survivor of certain persons named in the Agreement. The Trustee
will give written notice of termination of the Agreement to each
Certificateholder, and the final distribution will be made only upon surrender
and cancellation of the Certificates at an office or agency of the Trustee
specified in such notice of termination.
 
     If specified in the Prospectus Supplement, the Agreement will permit the
Trustee to sell the Mortgage Loans, Agency Securities or Contracts and the other
assets of the Trust Fund in the event that payments in respect thereto are
insufficient to make payments required in the Agreement. The assets of the Trust
Fund will be sold only under the circumstances and in the manner specified in
the Prospectus Supplement.
 
                       GE CAPITAL MORTGAGE SERVICES, INC.
 
GENERAL
 
     The Company, a New Jersey corporation, is a wholly-owned subsidiary of GE
Capital Mortgage Corporation ('GECMC'). GECMC is a wholly-owned subsidiary of
General Electric Capital Corporation, which, in turn, is a wholly-owned indirect
subsidiary of General Electric Company.
 
     The Company was acquired by GECMC, effective October 1, 1990, and
thereafter changed its name to GE Capital Mortgage Services, Inc. On August 31,
1993, the Company acquired from Shearson Holdings, Inc. all of the outstanding
capital stock of Shearson Lehman Hutton Mortgage Corporation, a California-based
mortgage company. Following such acquisition, the corporate name of Shearson
Lehman Hutton Mortgage Corporation was changed to GE Capital Mortgage Services
of California, Inc. On December 31, 1993, GE Capital Mortgage Services of
California, Inc. and General Electric Mortgage Securities Corporation, an
affiliate of the Company which has functioned primarily as an issuer and master
servicer of privately-placed mortgage-backed securities, were merged with and
into the Company.
 
                                       56

<PAGE>

     The Company is engaged in the business of refinancing, acquiring and
servicing residential mortgage loans secured by one- to four-family homes. It
obtains servicing through the acquisition and origination of mortgage loans, and
the purchase of servicing rights. The Company is also engaged in the home equity
business through its Home Equity Services unit. The Home Equity Services unit
acquires and services closed-end first and second mortgage loans. From time to
time, the Company may also engage in sales of such mortgage loans and servicing
rights. See 'The Trust Fund--The Mortgage Loans--Loan Production Sources' and
'--Loan Underwriting Policies.'
 
DELINQUENCY AND FORECLOSURE EXPERIENCE
 
     The Company's delinquency and foreclosure experience on the portfolio of
one- to four-family residential mortgage loans that it services as of a recent
date will be summarized in the Prospectus Supplement. Such summary will include
or consist of data with respect to the Company's Home Equity Loan portfolio if
the related Trust Fund includes a material amount of Home Equity Loans. There
can be no assurance that the Company's experience with respect to the Mortgage
Loans included in any Trust Fund will be similar to that historically
experienced by the Company.
 
                                 THE GUARANTOR
 
     If specified in the Prospectus Supplement, an entity identified therein as
the Guarantor will, to the limited extent specified, issue a Limited Guarantee
to guarantee certain of the Company's limited obligations under the related
Agreement. If the Guarantor provides any such Limited Guarantee with respect to
a series of Certificates, the Prospectus Supplement will contain additional
information about the Guarantor.
 
           CERTAIN LEGAL ASPECTS OF THE MORTGAGE LOANS AND CONTRACTS
 
     The following discussion contains summaries of certain legal aspects of
mortgage loans and manufactured housing contracts which are general in nature.
Because such legal aspects are governed primarily by applicable state law (which
laws may differ substantially), the summaries do not purport to be complete nor
to reflect the laws of any particular state, nor to encompass the laws of all
states in which the security for the Mortgage Loans or Contracts is situated.
The summaries are qualified in their entirety by reference to the applicable
federal and state laws governing the Mortgage Loans or Contracts.
 
                               THE MORTGAGE LOANS
 
GENERAL
 
     Mortgages.  The Mortgages will be either deeds of trust or mortgages. A
mortgage creates a lien upon the real property encumbered by the mortgage. It is
not prior to the lien for real estate taxes and assessments. Priority between
mortgages depends on their terms and generally on the order of filing with a
state or county office. There are two parties to a mortgage: the mortgagor, who
is the borrower and homeowner or the land trustee or the trustee of an inter
vivos revocable trust (as described below), and the mortgagee, who is the
lender. Under the mortgage instrument, the mortgagor delivers to the mortgagee a
note or bond and the mortgage. In the case of a land trust, there are three
parties because title to the property is held by a land trustee under a land
trust agreement of which the borrower/homeowner is the beneficiary; at
origination of a mortgage loan, the borrower executes a separate undertaking to
make payments on the mortgage note. In the case of an inter vivos revocable
trust, there are three parties because title to the property is held by the
trustee under the trust instrument of which the home occupant is the primary
beneficiary; at origination of a mortgage loan, the primary beneficiary and the
trustee execute a mortgage note and the trustee executes a mortgage or deed of
trust, with the primary beneficiary agreeing to be bound by its terms. Although
a deed of trust is similar to a mortgage, a deed of trust formally has three
parties, the borrower-homeowner called the trustor (similar to a mortgagor), a
lender (similar to a mortgagee) called the beneficiary, and a third-party
grantee called the trustee. Under a deed of trust, the borrower grants the
property, irrevocably until the debt is paid, in trust and generally with a
power of sale, to the trustee to secure payment of the obligation. The trustee's
authority under a deed of trust and the mortgagee's authority
 
                                       57

<PAGE>

under a mortgage are governed by law, the express provisions of the deed of
trust or mortgage and, in some cases, the directions of the beneficiary.
 
     Cooperatives.  Certain of the Mortgage Loans may be Cooperative Loans. The
private, non-profit, cooperative apartment corporation owns all the real
property that comprises the project, including the land, separate dwelling units
and all common areas. The cooperative is directly responsible for project
management and, in most cases, payment of real estate taxes and hazard and
liability insurance. If there is a blanket mortgage on the cooperative apartment
building and/or underlying land, as is generally the case, the cooperative, as
project mortgagor, is also responsible for meeting these mortgage obligations. A
blanket mortgage is ordinarily incurred by the cooperative in connection with
the construction or purchase of the cooperative's apartment building. The
interest of the occupant under proprietary leases or occupancy agreements to
which that cooperative is a party are generally subordinate to the interest of
the holder of the blanket mortgage in that building. If the cooperative is
unable to meet the payment obligations arising under its blanket mortgage, the
mortgagee holding the blanket mortgage could foreclose on that mortgage and
terminate all subordinate proprietary leases and occupancy agreements. In
addition, the blanket mortgage on a cooperative may provide financing in the
form of a mortgage that does not fully amortize with a significant portion of
principal being due in one lump sum at final maturity. The inability of the
cooperative to refinance this mortgage and its consequent inability to make such
final payment could lead to foreclosure by the mortgagee providing the
financing. A foreclosure in either event by the holder of the blanket mortgage
could eliminate or significantly diminish the value of any collateral held by
the lender who financed the purchase by an individual tenant-stockholder of
cooperative shares or, in the case of a Trust Fund including Cooperative Loans,
the collateral securing the Cooperative Loans.
 
     The cooperative is owned by tenant-stockholders who, through ownership of
stock shares or membership certificates in the corporation, receive proprietary
leases or occupancy agreements which confer exclusive rights to occupy specific
units. Generally, a tenant-stockholder of a cooperative must make a monthly
payment to the cooperative representing such tenant-stockholder's pro rata share
of the cooperative's payments for its blanket mortgage, real property taxes,
maintenance expenses and other capital or ordinary expenses. An ownership
interest in a cooperative and accompanying occupancy rights is financed through
a cooperative share loan evidenced by a promissory note and secured by a
security interest in the occupancy agreement or proprietary lease and in the
related cooperative shares. The lender takes possession of the share certificate
and a counterpart of the proprietary lease or occupancy agreement and a
financing statement covering the proprietary lease or occupancy agreement and
the cooperative shares is filed in the appropriate state and local offices to
perfect the lender's interest in its collateral. Subject to the limitations
discussed below, upon default of the tenant-stockholder, the lender may sue for
judgment on the promissory note, dispose of the collateral at a public or
private sale or otherwise proceed against the collateral or tenant-stockholder
as an individual as provided in the security agreement covering the assignment
of the proprietary lease or occupancy agreement and the pledge of cooperative
shares.
 
FORECLOSURE
 
     Mortgages.  Foreclosure of a deed of trust is generally accomplished by a
non-judicial trustee's sale under a specific provision in the deed of trust that
authorizes the trustee to sell the property to a third party upon any default by
the borrower under the terms of the note or deed of trust. In some states, the
trustee must record a notice of default and send a copy to the borrower-trustor
and any person who has recorded a request for a copy of a notice of default and
notice of sale. In addition, the trustee must provide notice in some states to
any other individual having an interest in the real property, including any
junior lien holders. The borrower, or any other person having a junior
encumbrance on the real estate, may, during a reinstatement period, cure the
default by paying the entire amount in arrears plus the costs and expenses
incurred in enforcing the obligation. Generally, state law controls the amount
of foreclosure expenses and costs, including attorney's fees, which may be
recovered by a lender. If the deed of trust is not reinstated, a notice of sale
must be posted in a public place and, in most states, published for a specific
period of time in one or more newspapers. In addition, some state laws require
that a copy of the notice of sale be posted on the property and sent to all
parties having an interest in the real property.
 
     Foreclosure of a mortgage is generally accomplished by judicial action. The
action is initiated by the service of legal pleadings upon all parties having an
interest in the real property. Delays in completion of the foreclosure
 
                                       58

<PAGE>

may occasionally result from difficulties in locating necessary parties
defendant. Judicial foreclosure proceedings are often not protested by any of
the parties defendant. However, when the mortgagee's right to foreclose is
contested, the legal proceedings necessary to resolve the issue can be time
consuming. After the completion of judicial foreclosure, the court generally
issues a judgment of foreclosure and appoints a referee or other court officer
to conduct the sale of the property.
 
     A sale conducted in accordance with the terms of the power of sale
contained in a mortgage or deed of trust is generally presumed to be conducted
regularly and fairly, and a conveyance of the real property by the referee
confers absolute legal title to the real property to the purchaser, free of all
junior mortgages and free of all other liens and claims subordinate to the
mortgage or deed of trust under which the sale is made (with the exception of
certain governmental liens and any redemption rights that may be granted to
borrowers pursuant to applicable state law). The purchaser's title is, however,
subject to all senior liens, encumbrances and mortgages. Thus, if the mortgage
or deed of trust being foreclosed is a junior mortgage or deed of trust, the
referee or trustee will convey title to the property to the purchaser, subject
to the underlying first mortgage or deed of trust and any other prior liens and
claims. A foreclosure under a junior mortgage or deed of trust generally will
have no effect on any senior mortgage or deed of trust, except that it may
trigger the right of a senior mortgagee or beneficiary to accelerate its
indebtedness under a 'due-on-sale' clause or 'due on further encumbrance' clause
contained in the senior mortgage.
 
     In case of foreclosure under either a mortgage or a deed of trust, the sale
by the referee or other designated officer or by the trustee is a public sale.
However, because of the difficulty a potential buyer at the sale would have in
determining the exact status of title and because the physical condition of the
property may have deteriorated during the foreclosure proceedings, it is
uncommon for a third party to purchase the property at the foreclosure sale.
Rather, it is common for the lender to purchase the property from the trustee or
referee for an amount equal to the principal amount of the mortgage or deed of
trust, accrued and unpaid interest and expenses of foreclosure. Thereafter, the
lender will assume the burdens of ownership, including obtaining casualty
insurance and making such repairs at its own expense as are necessary to render
the property suitable for sale. The lender will commonly obtain the services of
a real estate broker and pay the broker's commission in connection with the sale
of the property. Depending upon market conditions, the ultimate proceeds of the
sale of the property may not equal the lender's investment in the property. Any
loss may be reduced by the receipt of any mortgage insurance proceeds.
 
     Some courts have been faced with the issue of whether or not federal or
state constitutional provisions reflecting due process concerns for adequate
notice require that borrowers under deeds of trust or mortgages receive notices
in addition to the statutorily prescribed minimum. For the most part, these
cases have upheld the notice provisions as being reasonable or have found that
the sale by a trustee under a deed of trust, or under a mortgage having a power
of sale, does not involve sufficient state action to afford constitutional
protections to the borrower.
 
     Cooperative Loans.  The cooperative shares owned by the tenant-stockholder
and pledged to the lender are, in almost all cases, subject to restrictions on
transfer as set forth in the cooperative's Certificate of Incorporation and
Bylaws, as well as the proprietary lease or occupancy agreement, and may be
canceled by the cooperative for failure by the tenant-stockholder to pay rent or
other obligations or charges owed by such tenant-stockholder, including
mechanics' liens against the cooperative apartment building incurred by such
tenant-stockholder. The proprietary lease or occupancy agreement generally
permits the cooperative to terminate such lease or agreement in the event an
obligor fails to make payments or defaults in the performance of covenants
required thereunder. Typically, the lender and the cooperative enter into a
recognition agreement which establishes the rights and obligations of both
parties in the event of a default by the tenant-stockholder on its obligations
under the proprietary lease or occupancy agreement. A default by the
tenant-stockholder under the proprietary lease or occupancy agreement will
usually constitute a default under the security agreement between the lender and
the tenant-stockholder.
 
     The recognition agreement generally provides that, in the event that the
tenant-stockholder has defaulted under the proprietary lease or occupancy
agreement, the cooperative will take no action to terminate such lease or
agreement until the lender has been provided with an opportunity to cure the
default. The recognition agreement typically provides that if the proprietary
lease or occupancy agreement is terminated, the cooperative will
 
                                       59

<PAGE>

recognize the lender's lien against proceeds from a sale of the cooperative
apartment, subject, however, to the cooperative's right to sums due under such
proprietary lease or occupancy agreement. The total amount owed to the
cooperative by the tenant-stockholder, which the lender generally cannot
restrict and does not monitor, could reduce the value of the collateral below
the outstanding principal balance of the cooperative loan and accrued and unpaid
interest thereon.
 
     Recognition agreements also provide that in the event of a foreclosure on a
cooperative loan, the lender must obtain the approval or consent of the
cooperative as required by the proprietary lease before transferring the
cooperative shares or assigning the proprietary lease. Generally, the lender is
not limited in any rights it may have to dispossess the tenant-stockholders.
However, the requirement that the lender obtain prior approval or consent of the
cooperative before transferring the cooperative shares or assigning the
proprietary lease may result in delays in completion of foreclosure on
cooperative shares and delays in receipt of foreclosure proceeds by the related
Trust Fund. See '--The Mortgage Loans--General--Cooperatives' herein.
 
     In some states, foreclosure on the cooperative shares is accomplished by a
sale in accordance with the provisions of Article 9 of the Uniform Commercial
Code (the 'UCC') and the security agreement relating to those shares. Article 9
of the UCC requires that a sale be conducted in a 'commercially reasonable'
manner. Whether a foreclosure sale has been conducted in a 'commercially
reasonable' manner will depend on the facts in each case. In determining
commercial reasonableness, a court will look to the notice given the debtor and
the method, manner, time, place and terms of the foreclosure. Generally, a sale
conducted according to the usual practice of banks selling similar collateral
will be considered reasonably conducted.
 
     Article 9 of the UCC provides that the proceeds of the sale will be applied
first to pay the costs and expenses of the sale and then to satisfy the
indebtedness secured by the lender's security interest. The recognition
agreement, however, generally provides that the lender's right to reimbursement
is subject to the right of the cooperative corporation to receive sums due under
the proprietary lease or occupancy agreement. If there are proceeds remaining,
the lender must account to the tenant-stockholder for the surplus. Conversely,
if a portion of the indebtedness remains unpaid, the tenant-stockholder is
generally responsible for the deficiency. See 'Anti-Deficiency Legislation and
Other Limitations on Lenders' below.
 
JUNIOR MORTGAGES; RIGHTS OF SENIOR MORTGAGEES
 
     Some of the Home Equity Loans included in a Trust Fund may be secured by
mortgages or deeds of trust that are junior to other mortgages or deeds of trust
held by the Company, other lenders or institutional investors. The rights of the
Trustee (and therefore the Certificateholders) as mortgagee under a junior
mortgage or beneficiary under a junior deed of trust are subordinate to those of
the mortgagee under the senior mortgage or beneficiary under the senior deed of
trust, including the prior rights of the senior mortgagee to receive hazard
insurance and condemnation proceeds and to cause the property securing the
Mortgage Loan to be sold upon default of the mortgagor or trustor, thereby
extinguishing the junior mortgagee's or junior beneficiary's lien unless the
junior mortgagee or junior beneficiary asserts its subordinate interest in the
property in foreclosure litigation and, possibly, satisfies the defaulted senior
mortgage or deed of trust. As discussed more fully below, a junior mortgagee or
junior beneficiary may satisfy a defaulted senior loan in full and, in some
states, may cure such default and bring the senior loan current, in either event
adding the amounts expended to the balance due on the junior loan. In most
states, no notice of default is required to be given to a junior mortgagee or
junior beneficiary, and junior mortgagees or junior beneficiaries are seldom
given notice of defaults on senior mortgages. In order for a foreclosure action
in some states to be effective against a junior mortgagee or junior beneficiary,
the junior mortgagee or junior beneficiary must be named in any foreclosure
action, thus giving notice to junior lienors. See 'Servicing of the Mortgage
Loans and Contracts--Collection and Other Servicing Procedures'.
 
     The standard form of the mortgage or deed of trust used by most
institutional lenders (including the Company) confers on the mortgagee or
beneficiary the right under some circumstances both to receive all proceeds
collected under any hazard insurance policy and all awards made in connection
with any condemnation proceedings, and to apply such proceeds and awards to any
indebtedness secured by the mortgage or deed of trust in such order as the
mortgagee or beneficiary may determine. Thus, in the event improvements on the
property are damaged or destroyed by fire or other casualty, or in the event the
property is taken by condemnation, the mortgagee or beneficiary under any
underlying senior mortgages may have the prior right to collect any insurance
proceeds payable under a hazard insurance policy and any award of damages in
connection with the
 
                                       60

<PAGE>

condemnation and to apply the same to the indebtedness secured by the senior
mortgages or deeds of trust. Proceeds in excess of the amount of senior mortgage
indebtedness, in most cases, will be applied to the indebtedness of a junior
mortgage or trust deed.
 
     A common form of mortgage or deed of trust used by institutional lenders
typically contains a 'future advance' clause which provides, in essence, that
additional amounts advanced to or on behalf of the mortgagor or trustor by the
mortgagee or beneficiary are to be secured by the mortgage or deed of trust.
While such a clause is valid under the laws of most states, the priority of any
advance made under the clause depends, in some states, on whether the advance
was an 'obligatory' or 'optional' advance. If the mortgagee or beneficiary is
obligated to advance the additional amounts, the advance is entitled to receive
the same priority as amounts initially loaned under the mortgage or deed of
trust, notwithstanding that there may be intervening junior mortgages or deeds
of trust and other liens at the time of the advance. Where the mortgagee or
beneficiary is not obligated to advance the additional amounts (and, in some
jurisdictions, has actual knowledge of the intervening junior mortgages or deeds
of trust and other liens), the advance will be subordinate to such intervening
junior mortgages or deeds of trust and other liens. Priority of advances under
the clause rests, in many other states, on state statutes giving priority to all
advances made under the loan agreement to a 'credit limit' amount stated in the
recorded mortgage.
 
     Other provisions sometimes included in the form of the mortgage or deed of
trust used by institutional lenders (and included in some of the forms used by
the Company) obligate the mortgagor or trustor to pay, before delinquency, all
taxes and assessments on the property and, when due, all encumbrances, charges
and liens on the property which appear prior to the mortgage or deed of trust,
to provide and maintain fire insurance on the property, to maintain and repair
the property and not to commit or permit any waste thereof, and to appear in and
defend any action or proceeding purporting to affect the property or the rights
of the mortgagee or beneficiary under the mortgage or deed of trust. Upon a
failure of the mortgagor or trustor to perform any of these obligations, the
mortgagee or beneficiary is given the right under certain mortgages or deeds of
trust to perform the obligation itself, at its election, with the mortgagor or
trustor agreeing to reimburse the mortgagee or beneficiary for any sums expended
by the mortgagee or beneficiary on behalf of the mortgagor or trustor. All sums
so expended by the mortgagee or beneficiary become part of the indebtedness
secured by the mortgage or deed of trust. See 'Servicing of the Mortgage Loans
and Contracts--Collection and Other Servicing Procedures'.
 
RIGHT OF REDEMPTION
 
     In some states, after sale pursuant to a deed of trust or foreclosure of a
mortgage, the borrower and foreclosed junior lienors are given a statutory
period in which to redeem the property from the foreclosure sale. In some
states, redemption may occur only upon payment of the entire principal balance
of the loan, accrued interest and expenses of foreclosure. In other states,
redemption may be authorized if the former borrower pays only a portion of the
sums due. The effect of a statutory right of redemption is to diminish the
ability of the lender to sell the foreclosed property. The rights of redemption
would defeat the title of any purchaser from the lender subsequent to
foreclosure or sale under a deed of trust. Consequently, the practical effect of
the redemption right is to force the lender to retain the property and pay the
expenses of ownership until the redemption period has run.
 
ANTI-DEFICIENCY LEGISLATION AND OTHER LIMITATIONS ON LENDERS
 
     Certain states have imposed statutory prohibitions that limit the remedies
of a beneficiary under a deed of trust or a mortgagee under a mortgage. In some
states, statutes limit the right of the beneficiary or mortgagee to obtain a
deficiency judgment against the borrower following foreclosure or sale under a
deed of trust. A deficiency judgment would be a personal judgment against the
former borrower equal in most cases to the difference between the net amount
realized upon the public sale of the real property and the amount due to the
lender. Other statutes require the beneficiary or mortgagee to exhaust the
security afforded under a deed of trust or mortgage by foreclosure in an attempt
to satisfy the full debt before bringing a personal action against the borrower.
Finally, other statutory provisions limit any deficiency judgment against the
former borrower following a judicial sale to the excess of the outstanding debt
over the fair market value of the property at the time of the public sale. The
purpose of these statutes is generally to prevent a beneficiary or a mortgagee
from obtaining a large deficiency judgment against the former borrower as a
result of low or no bids at the judicial sale.
 
                                       61

<PAGE>

     In addition to laws limiting or prohibiting deficiency judgments, numerous
other statutory provisions, including the federal bankruptcy laws and state laws
affording relief to debtors, may interfere with or affect the ability of the
secured mortgage lender to realize upon collateral and/or enforce a deficiency
judgment. For example, with respect to federal bankruptcy law, a court with
federal bankruptcy jurisdiction may permit a debtor through his or her Chapter
11 or Chapter 13 rehabilitative plan to cure a monetary default in respect of a
mortgage loan on a debtor's residence by paying arrearages within a reasonable
time period and reinstating the original mortgage loan payment schedule even
though the lender accelerated the mortgage loan and final judgment of
foreclosure had been entered in state court (provided no sale of the residence
had yet occurred) prior to the filing of the debtor's petition. Some courts with
federal bankruptcy jurisdiction have approved plans, based on the particular
facts of the reorganization case, that effected the curing of a mortgage loan
default by paying arrearages over a number of years.
 
     Courts with federal bankruptcy jurisdiction have also indicated that the
terms of a mortgage loan secured by property of the debtor may be modified.
These courts have suggested that such modifications may include reducing the
amount of each monthly payment, changing the rate of interest, altering the
repayment schedule and reducing the lender's security interest to the value of
the residence, thus leaving the lender a general unsecured creditor for the
difference between the value of the residence and the outstanding balance of the
loan.
 
     The Internal Revenue Code of 1986, as amended, provides priority to certain
tax liens over the lien of the mortgage. In addition, substantive requirements
are imposed upon mortgage lenders in connection with the origination and the
servicing of mortgage loans by numerous federal and some state consumer
protection laws. These laws include the federal Truth-in-Lending Act, Real
Estate Settlement Procedures Act, Equal Credit Opportunity Act, Fair Credit
Billing Act, Fair Credit Reporting Act, their related regulations and related
statutes. These federal laws impose specific statutory liabilities upon lenders
who originate mortgage loans and who fail to comply with the provisions of the
law. In some cases, this liability may affect assignees of the mortgage loans.
 
     Generally, Article 9 of the UCC governs foreclosure on cooperative shares
and the related proprietary lease or occupancy agreement. Some courts have
interpreted section 9-504 of the UCC to prohibit a deficiency award unless the
creditor establishes that the sale of the collateral (which, in the case of a
Cooperative Loan, would be the shares of the cooperative and the related
proprietary lease or occupancy agreement) was conducted in a commercially
reasonable manner.
 
ENFORCEABILITY OF CERTAIN PROVISIONS
 
     Unless the Prospectus Supplement indicates otherwise, all of the Mortgage
Loans will contain due-on-sale clauses. These clauses permit the lender to
accelerate the maturity of a loan if the borrower sells, transfers, or conveys
the property. The enforceability of these clauses was the subject of legislation
or litigation in many states, and in some cases the enforceability of these
clauses was limited or denied. However, the Garn-St Germain Depository
Institutions Act of 1982 (the 'Garn-St Germain Act') preempts state
constitutional, statutory and case law prohibiting the enforcement of
due-on-sale clauses and permits lenders to enforce these clauses in accordance
with their terms, subject to certain limited exceptions. The Garn-St Germain Act
does 'encourage' lenders to permit assumption of loans at the original rate of
interest or at some other rate less than the average of the original rate and
the market rate.
 
     Due-on-sale clauses contained in mortgage loans originated by federal
savings and loan associations or federal savings banks are fully enforceable
pursuant to regulations of the Office of Thrift Supervision (the 'OTS'), as
successor to the Federal Home Loan Bank Board, which preempt state law
restrictions on the enforcement of due-on-sale clauses.
 
     The Garn-St Germain Act also sets forth several specific instances in which
a mortgage lender covered by the Garn-St Germain Act (including federal savings
and loan associations and federal savings banks) may not exercise a due-on-sale
clause, notwithstanding the fact that a transfer of the property may have
occurred. These include intra-family transfers, certain transfers by operation
of law, leases of fewer than three years and the creation of a junior
encumbrance. Regulations promulgated under the Garn-St Germain Act by the
Federal Home Loan Bank Board as succeeded by the OTS also prohibit the
imposition of a prepayment penalty upon the acceleration of a loan pursuant to a
due-on-sale clause. If interest rates were to rise above the interest rates on
the Mortgage Loans, then any inability of the Company to enforce due-on-sale
clauses may result in the Trust Fund
 
                                       62

<PAGE>

including a greater number of loans bearing below-market interest rates than
would otherwise be the case, since a transferee of the property underlying a
Mortgage Loan would have a greater incentive in such circumstances to assume the
transferor's Mortgage Loan. Any inability of the Company to enforce due-on-sale
clauses may affect the average life of the Mortgage Loans and the number of
Mortgage Loans that may be outstanding until maturity. See 'Yield, Maturity and
Weighted Average Life Considerations'.
 
     Upon foreclosure, courts have imposed general equitable principles. These
equitable principles are generally designed to relieve the borrower from the
legal effect of his defaults under the loan documents. Examples of judicial
remedies that have been fashioned include requirements that the lender undertake
affirmative and expensive actions to determine the causes for the borrower's
default and the likelihood that the borrower will be able to reinstate the loan.
In some cases, courts have substituted their judgment for the lender's judgment
and have required that lenders reinstate loans or recast payment schedules in
order to accommodate borrowers who are suffering from temporary financial
disability. In other cases, courts have limited the right of the lender to
foreclose if the default under the mortgage instrument is not monetary, such as
the borrower failing to adequately maintain the property or the borrower
executing a second mortgage or deed of trust affecting the property.
 
APPLICABILITY OF USURY LAWS
 
     Title V of the Depository Institutions Deregulation and Monetary Control
Act of 1980, enacted in March 1980 ('Title V'), provides that state usury
limitations shall not apply to certain types of residential first mortgage loans
originated by certain lenders after March 31, 1980. The OTS, as successor to the
Federal Home Loan Bank Board, is authorized to issue rules and regulations and
to publish interpretations governing implementation of Title V. The statute
authorized any state to reimpose interest rate limits by adopting, before April
1, 1983, a law or constitutional provision which expressly rejects application
of the federal law. In addition, even where Title V is not so rejected, any
state is authorized by the law to adopt a provision limiting discount points or
other charges on mortgage loans covered by Title V.
 
     Under the Agreement for each series of Certificates, the Company will
represent and warrant to the Trustee that the Mortgage Loans have been
originated in compliance in all material respects with applicable state laws,
including usury laws.
 
SOLDIERS' AND SAILORS' CIVIL RELIEF ACT
 
     Generally, under the terms of the Soldiers' and Sailors' Civil Relief Act
of 1940, as amended (the 'Relief Act'), a borrower who enters military service
after the origination of such borrower's Mortgage Loan (including a borrower who
is a member of the National Guard or is in reserve status at the time of the
origination of the Mortgage Loan and is later called to active duty) may not be
charged interest above an annual rate of 6% during the period of such borrower's
active duty status, unless a court orders otherwise upon application of the
lender. It is possible that such interest rate limitation could have an effect,
for an indeterminate period of time, on the ability of the Company to collect
full amounts of interest on certain of the Mortgage Loans. In addition, the
Relief Act imposes limitations which would impair the ability of the Company to
foreclose on an affected Mortgage Loan during the borrower's period of active
duty status. Thus, in the event that such a Mortgage Loan goes into default
there may be delays and losses occasioned by the inability to realize upon the
Mortgaged Property in a timely fashion.
 
     Under the applicable Agreement, the Company will not be required to make
deposits to the Certificate Account for a series of Certificates in respect of
any Mortgage Loan as to which the Relief Act has limited the amount of interest
the related borrower is required to pay each month, and Certificateholders will
bear such loss.
 
ENVIRONMENTAL CONSIDERATIONS
 
     Under the federal Comprehensive Environmental Response Compensation and
Liability Act, as amended, and under state law in certain states, a secured
party which takes a deed in lieu of foreclosure, purchases a mortgaged property
at a foreclosure sale or operates a mortgaged property may become liable in
certain circumstances for the costs of remedial action ('Cleanup Costs') if
hazardous wastes or hazardous substances have been released or disposed of on
the property. Such Cleanup Costs may be substantial. It is possible that such
Cleanup Costs could reduce the amounts otherwise distributable to the
Certificateholders if the related Trust Fund
 
                                       63

<PAGE>

were deemed to be liable for such Cleanup Costs and if such Cleanup Costs were
incurred. Moreover, under federal law and the law of certain states, a lien may
be imposed for any Cleanup Costs incurred by federal or state authorities on the
property that is the subject of such Cleanup Costs. All subsequent liens on such
property are subordinated to such lien and, in several states, even prior
recorded liens, including those of existing mortgages, are subordinated to such
liens (a 'Superlien'). In the latter states, the security interest of the
Trustee in a Mortgaged Property that is subject to such a Superlien could be
adversely affected.
 
     Traditionally, residential mortgage lenders have not taken steps to
evaluate whether hazardous wastes or hazardous substances are present with
respect to any mortgaged property prior to the origination of the mortgage loan
or prior to foreclosure or accepting a deed in lieu of foreclosure. The Company
does not make any representation or warranty or assume any liability with
respect to the absence or effect of hazardous wastes or hazardous substances on
any Mortgaged Property or any casualty resulting from the presence or effect of
hazardous wastes or hazardous substances. See 'Servicing of the Mortgage Loans
and Contracts--Collection and Other Servicing Procedures'.
 
                                 THE CONTRACTS
 
GENERAL
 
     As a result of the Company's assignment of the Contracts to the Trustee,
the Certificateholders will succeed collectively to all of the rights (including
the right to receive payment on the Contracts) and will assume certain
obligations of the Company. Each Contract evidences both (a) the obligation of
the obligor to repay the loan evidenced thereby, and (b) the grant of a security
interest in the Manufactured Home to secure repayment of such loan. Certain
aspects of both features of the Contracts are described more fully below.
 
     The Contracts generally are 'chattel paper' as defined in the Uniform
Commercial Code (the 'UCC') in effect in the states in which the Manufactured
Homes initially were registered. Pursuant to the UCC, the sale of chattel paper
is treated in a manner similar to perfection of a security interest in chattel
paper. Under the Agreement, the Company will transfer physical possession of the
Contracts to the Trustee or its custodian. In addition, the Company will make an
appropriate filing of a UCC-1 financing statement in the appropriate states to
give notice of the Trustee's ownership of the Contracts. Unless otherwise
specified in the related Prospectus Supplement, the Contracts will not be
stamped or marked otherwise to reflect their assignment from the Company to the
Trustee. Therefore, if a subsequent purchaser were able to take physical
possession of the Contracts without notice of such assignment, the Trustee's
interest in the Contracts could be defeated.
 
SECURITY INTERESTS IN THE MANUFACTURED HOMES
 
     The Manufactured Homes securing the Contracts may be located in all 50
states. Security interests in manufactured homes may be perfected either by
notation of the secured party's lien on the certificate of title or by delivery
of the required documents and payment of a fee to the state motor vehicle
authority, depending on state law. In some nontitle states, perfection pursuant
to the provisions of the UCC is required. The Company may effect such notation
or delivery of the required documents and fees, and obtain possession of the
certificate of title, as appropriate under the laws of the state in which any
manufactured home securing a manufactured housing conditional sales contract is
registered. In the event the Company fails, due to clerical errors, to effect
such notation or delivery, or files the security interest under the wrong law
(for example, under a motor vehicle title statute rather than under the UCC, in
a few states), the Certificateholders may not have a first priority security
interest in the Manufactured Home securing a contract. As manufactured homes
have become larger and often have been attached to their sites without any
apparent intention to move them, courts in many states have held that
manufactured homes, under certain circumstances, may become subject to real
estate title and recording laws. As a result, a security interest in a
manufactured home could be rendered subordinate to the interests of other
parties claiming an interest in the home under applicable state real estate law.
In order to perfect a security interest in a manufactured home under real estate
laws, the holder of the security interest must file either a 'fixture filing'
under the provisions of the UCC or a real estate mortgage under the real estate
laws of the state where the home is located. These filings must be made in the
real estate records office of the county where the home is located.
Substantially all of the Contracts contain provisions prohibiting the borrower
from permanently
 
                                       64

<PAGE>

attaching the Manufactured Home to its site. So long as the borrower does not
violate this agreement, a security interest in the Manufactured Home will be
governed by the certificate of title laws or the UCC, and the notation of the
security interest on the certificate of title or the filing of a UCC financing
statement will be effective to maintain the priority of the security interest in
the Manufactured Home. If, however, a Manufactured Home is permanently attached
to this site, other parties could obtain an interest in the Manufactured Home
which is prior to the security interest transferred to the Trustee. With respect
to a series of Certificates and as described in the related Prospectus
Supplement, the Company may be required to perfect a security interest in the
Manufactured Home under applicable real estate laws. If such real estate filings
are not required and if any of the foregoing events were to occur, the only
recourse of the Certificateholders would be against the Company pursuant to its
repurchase obligation for breach of warranties.
 
     The Company will assign its security interest in the Manufactured Homes to
the Trustee on behalf of the Certificateholders. Unless otherwise specified in
the related Prospectus Supplement, neither the Company nor the Trustee will
amend the certificates of title to identify the Trust Fund as the new secured
party. Accordingly, the Company will continue to be named as the secured party
on the certificates of title relating to the Manufactured Homes. In most states,
such assignment is an effective conveyance of such security interest without
amendment of any lien noted on the related certificate of title and the new
secured party succeeds to the Company's rights as the secured party. However, in
some states there exists a risk that, in the absence of an amendment to the
certificate of title, such assignment of the security interest might not be held
effective against creditors of the Company.
 
     In the absence of fraud, forgery or permanent affixation of the
Manufactured Home to its site by the Manufactured Home owner, or administrative
error by state recording officials, the notation of the lien of the Company on
the certificate of title or delivery of the required documents and fees will be
sufficient to protect the Certificateholders against the rights of subsequent
purchasers of a Manufactured Home or subsequent lenders who take a security
interest in the Manufactured Home. If there are any Manufactured Homes as to
which the security interest assigned to the Company and the Certificateholders
is not perfected, such security interest would be subordinate to, among others,
subsequent purchasers for value of Manufactured Homes and holders of perfected
security interests. There also exists a risk in not identifying the
Certificateholders as the new secured party on the certificate of title that,
through fraud or negligence, the security interest of the Certificateholders
could be released.
 
     In the event that the owner of a Manufactured Home moves it to a state
other than the state in which such Manufactured Home initially is registered
under the laws of most states the perfected security interest in the
Manufactured Home would continue for four months after such relocation and
thereafter only if and after the owner re-registers the Manufactured Home in
such state. If the owner were to relocate a Manufactured Home to another state
and not re-register the Manufactured Home in such state, and if steps are not
taken to re-perfect the Trustee's security interest in such state, the security
interest in the Manufactured Home would cease to be perfected. A majority of
states generally require surrender of a certificate of title to re-register a
Manufactured Home; accordingly, the Trustee must surrender possession if it
holds the certificate of title to such Manufactured Home or, in the case of
Manufactured Homes registered in states which provide for notation of lien, the
Trustee would receive notice of surrender if the security interest in the
Manufactured Home is noted on the certificate of title. Accordingly, the Trustee
would have the opportunity to re-perfect its security interest in the
Manufactured Home in the state of relocation. In states which do not require a
certificate of title for registration of a manufactured home, re-registration
could defeat perfection. In the ordinary course of servicing the manufactured
housing conditional sales contracts, the Company takes steps to effect such
re-perfection upon receipt of notice of re-registration or information from the
obligor as to relocation. Similarly, when an obligor under a manufactured
housing conditional sales contract sells a manufactured home, the Trustee must
surrender possession of the certificate of title or will receive notice as a
result of its lien noted thereon and accordingly will have an opportunity to
require satisfaction of the related manufactured housing conditional sales
contract before release of the lien. Under the Agreement the Company is
obligated to take such steps, at the Company's expense, as are necessary to
maintain perfection of security interests in the Manufactured Homes.
 
     Under the laws of most states, liens for repairs performed on a
Manufactured Home take priority even over a perfected security interest. The
Company will represent in the Agreement that it has no knowledge of any such
liens with respect to any Manufactured Home securing payment on any Contract.
However, such liens could arise
 
                                       65

<PAGE>

at any time during the term of a Contract. No notice will be given to the
Trustee or Certificateholders in the event such a lien arises.
 
ENFORCEMENT OF SECURITY INTERESTS IN MANUFACTURED HOMES
 
     The Company on behalf of the Trustee, to the extent required by the related
Agreement, may take action to enforce the Trustee's security interest with
respect to Contracts in default by repossession and resale of the Manufactured
Homes securing such Contracts in default. So long as the Manufactured Home has
not become subject to the real estate law, a creditor can repossess a
Manufactured Home securing a Contract by voluntary surrender, by 'self-help'
repossession that is 'peaceful' (i.e., without breach of the peace) or, in the
absence of voluntary surrender and the ability to repossess without breach of
the peace, by judicial process. The holder of a Contract must give the debtor a
number of days' notice, which varies from 10 to 30 days depending on the state,
prior to commencement of any repossession. The UCC and consumer protection laws
in most states place restrictions on repossession sales, including requiring
prior notice to the debtor and commercial reasonableness in effecting such a
sale. The law in most states also requires that the debtor be given notice of
any sale prior to resale of the unit so that the debtor may redeem at or before
such resale. In the event of such repossession and resale of a Manufactured
Home, the Trustee would be entitled to be paid out of the sale proceeds before
such proceeds could be applied to the payment of the claims of unsecured
creditors or the holders of subsequently perfected security interests or,
thereafter, to the debtor.
 
     Under the laws applicable in most states, a creditor is entitled to obtain
a deficiency judgment from a debtor for any deficiency on repossession and
resale of the manufactured home securing such debtor's loan. However, some
states impose prohibitions or limitations on deficiency judgments.
 
     Certain other statutory provisions, including federal and state bankruptcy
and insolvency laws and general equitable principles, may limit or delay the
ability of a lender to repossess and resell collateral or enforce a deficiency
judgment.
 
CONSUMER PROTECTION LAWS
 
     The so-called 'Holder-in-Due-Course' rule of the Federal Trade Commission
is intended to defeat the ability of the transferor of a consumer credit
contract which is the seller of goods which gave rise to the transaction (and
certain related lenders and assignees) to transfer such contract free of notice
of claims by the debtor thereunder. The effect of this rule is to subject the
assignee of such a contract to all claims and defenses which the debtor could
assert against the seller of goods. Liability under this rule is limited to
amounts paid under a Contract; however, the obligor also may be able to assert
the rule to set off remaining amounts due as a defense against a claim brought
by the Trust Fund against such obligor. Numerous other federal and state
consumer protection laws impose requirements applicable to the origination of
and lending pursuant to the Contracts, including the Truth-in-Lending Act, the
Federal Trade Commission Act, the Fair Credit Billing Act, the Fair Credit
Reporting Act, the Equal Credit Opportunity Act, the Fair Debt Collection
Practices Act and the Uniform Consumer Credit Code. In the case of some of these
laws, the failure to comply with their provisions may affect the enforceability
of the related Contract.
 
TRANSFERS OF MANUFACTURED HOMES; ENFORCEABILITY OF 'DUE-ON-SALE' CLAUSES
 
     The Contracts, in general, prohibit the sale or transfer of the related
Manufactured Homes without the consent of the Company and permit the
acceleration of the maturity of the Contracts by the Company upon any such sale
or transfer that is not consented to. Unless otherwise specified in the related
Prospectus Supplement, the Company expects that it will permit most transfers of
Manufactured Homes and not accelerate the maturity of the related Contracts. In
certain cases, the transfer may be made by a delinquent obligor in order to
avoid a repossession proceeding with respect to a Manufactured Home.
 
     In the case of a transfer of a Manufactured Home after which the Company
desires to accelerate the maturity of the related Contract, the Company's
ability to do so will depend on the enforceability under state law of the
'due-on-sale' clause. The Garn-St Germain Act preempts, subject to certain
exceptions and conditions, state laws prohibiting enforcement of 'due-on-sale'
clauses applicable to the Manufactured Homes. Consequently, in some states the
Company may be prohibited from enforcing a 'due-on-sale' clause in respect of
certain Manufactured Homes.
 
                                       66

<PAGE>

APPLICABILITY OF USURY LAWS
 
     Title V provides that, subject to the following conditions, state usury
limitations shall not apply to any loan which is secured by a first lien on
certain kinds of manufactured housing. The Contracts would be covered if they
satisfy certain conditions, among other things, governing the terms of any
prepayments, late charges and deferral fees and requiring a 30-day notice period
prior to instituting any action leading to repossession of or foreclosure with
respect to the related unit.
 
     Title V authorized any state to reimpose limitations on interest rates and
finance charges by adopting before April 1, 1983 a law or constitutional
provision which expressly rejects application of the federal law. Fifteen states
adopted such a law prior to the April 1, 1983 deadline. In addition, even where
Title V was not so rejected, any state is authorized by the law to adopt a
provision limiting discount points or other charges on loans covered by Title V.
In any state in which application of Title V was expressly rejected or a
provision limiting discount points or other charges has been adopted, no
Contract which imposes finance charges or provides for discount points or
charges in excess of permitted levels will be included in a Trust Fund. The
Company will represent that all of the Contracts comply with applicable usury
law.
 
SOLDIERS' AND SAILORS' CIVIL RELIEF ACT
 
     Generally, under the terms of the Relief Act, a borrower who enters
military service after the origination of such borrower's Contract (including a
borrower who is a member of the National Guard or is in reserve status at the
time of the origination of the Contract and is later called to active duty) may
not be charged interest above an annual rate of 6% during the period of such
borrower's active duty status, unless a court orders otherwise upon application
of the lender. It is possible that such interest rate limitation could have an
effect, for an indeterminate period of time, on the ability of the Company to
collect full amounts of interest on certain of the Contracts. In addition, the
Relief Act imposes limitations which would impair the ability of the Company to
enforce the lien with respect to an affected Contract during the borrower's
period of active duty status. Thus, in the event that such a Contract goes into
default, there may be delays and losses occasioned by the inability to enforce
the lien with respect to the Manufactured Home in a timely fashion.
 
     Under the applicable Agreement, the Company will not be required to make
deposits to the Certificate Account for a series of Certificates in respect of
any Contract as to which the Relief Act has limited the amount of interest the
related borrower is required to pay each month, and Certificateholders will bear
such loss.
 
                            LEGAL INVESTMENT MATTERS
 
     Unless otherwise specified in the Prospectus Supplement, all of the classes
of a series of Certificates offered thereby will constitute 'mortgage related
securities' for purposes of the Secondary Mortgage Market Enhancement Act of
1984 ('SMMEA'), so long as they are rated in one of the two highest rating
categories by one or more nationally recognized statistical rating
organizations, and, as such, are legal investments for persons, trusts,
corporations, partnerships, associations, business trusts and business entities
(including, but not limited to, state-chartered savings banks, commercial banks,
savings and loan associations and insurance companies, as well as trustees and
state government employee retirement systems) created pursuant to or existing
under the laws of the United States or of any state (including the District of
Columbia and Puerto Rico) whose authorized investments are subject to state
regulation to the same extent that, under applicable law, obligations issued by
or guaranteed as to principal and interest by the United States or any agency or
instrumentality thereof constitute legal investments for such entities. Pursuant
to SMMEA, a number of states enacted legislation, on or before the October 3,
1991 cut-off for such enactments, limiting to varying extents the ability of
certain entities (in particular, insurance companies) to invest in 'mortgage
related securities,' in most cases by requiring the affected investors to rely
solely upon existing state law and not SMMEA. Accordingly, the investors
affected by such legislation will be authorized to invest in the Certificates
only to the extent provided in such legislation.
 
     SMMEA also amended the legal investment authority of federally chartered
depository institutions as follows: federal savings and loan associations and
federal savings banks may invest in, sell or otherwise deal with mortgage
related securities without limitation as to the percentage of their assets
represented thereby; federal credit unions may invest in mortgage related
securities; and national banks may purchase mortgage related
 
                                       67

<PAGE>

securities for their own account without regard to the limitations generally
applicable to investment securities set forth in 12 U.S.C. Section 24 (Seventh),
subject in each case to such regulations as the applicable federal regulatory
authority may prescribe. In this connection, federal credit unions should review
National Credit Union Administration (the 'NCUA') Letter to Credit Unions No.
96, as modified by Letter to Credit Unions No. 108, which includes guidelines to
assist federal credit unions in making investment decisions for mortgage related
securities. The NCUA has adopted rules, effective December 2, 1991, which
prohibit federal credit unions from investing in certain mortgage related
securities, possibly including certain series or classes of Certificates, except
under limited circumstances.
 
     If specified in the Prospectus Supplement, one or more classes of a series
of Certificates will not constitute 'mortgage related securities' for purposes
of SMMEA. In such event, persons whose investments are subject to state or
federal regulation may not be legally authorized to invest in such classes of
Certificates.
 
     All depository institutions considering an investment in the Certificates
should review the 'Supervisory Policy Statement on Securities Activities' dated
January 28, 1992 (the 'Policy Statement') of the Federal Financial Institutions
Examination Council. The Policy Statement, which has been adopted by the Board
of Governors of the Federal Reserve System, the FDIC, the Comptroller of the
Currency and the Office of Thrift Supervision, effective February 10, 1992, and
by the NCUA (with certain modifications) effective June 26, 1992, prohibits
depository institutions from investing in certain 'high-risk mortgage
securities' (including securities such as certain series and classes of the
Certificates), except under limited circumstances, and sets forth certain
investment practices deemed to be unsuitable for regulated institutions.
 
     Institutions whose investment activities are subject to regulation by
federal or state authorities should review rules, policies and guidelines
adopted from time to time by such authorities before purchasing Certificates, as
certain series or classes thereof may be deemed unsuitable investments, or may
otherwise be restricted, under such rules, policies or guidelines, in certain
instances irrespective of SMMEA.
 
     The foregoing does not take into consideration the applicability of
statutes, rules, regulations, orders, guidelines or agreements generally
governing investments made by a particular investor, including, but not limited
to, 'prudent investor' provisions, percentage-of-assets limits, provisions which
may restrict or prohibit investments in securities which are not
'interest-bearing' or 'income-paying,' and, with regard to any Certificates
issued in book-entry form, provisions which may restrict or prohibit investments
in securities which are issued in book-entry form.
 
     Investors should consult their own legal advisors in determining whether
and to what extent the Certificates constitute legal investments for such
investors.
 
                              ERISA CONSIDERATIONS
 
     The Employee Retirement Income Security Act of 1974, as amended ('ERISA'),
and the Internal Revenue Code of 1986, as amended (the 'Code') impose
requirements on employee benefit plans (and on certain other retirement plans
and arrangements, including individual retirement accounts and annuities, Keogh
plans and collective investment funds and separate accounts in which such plans,
accounts or arrangements are invested) subject to ERISA or Section 4975 of the
Code (collectively, 'Plans') and on persons who are fiduciaries with respect to
such Plans. Among other things, ERISA requires that the assets of a Plan subject
to ERISA be held in trust and that the trustee, or other duly authorized
fiduciary, have exclusive authority and discretion to manage and control the
assets of such Plan. ERISA also imposes certain duties on persons who are
fiduciaries with respect to a Plan. Under ERISA, any person who exercises any
authority or control respecting the management or disposition of the assets of a
Plan generally is considered to be a fiduciary of such Plan. In addition to the
imposition by ERISA of general fiduciary standards of investment prudence and
diversification, ERISA and Section 4975 of the Code prohibit a broad range of
transactions involving Plan assets and persons ('Parties in Interest') having
certain specified relationships to a Plan and impose additional prohibitions
where Parties in Interest are fiduciaries with respect to such Plan.
 
     The United States Department of Labor (the 'DOL') has issued a regulation
concerning the definition of what constitutes the assets of a Plan (DOL Reg.
Section 2510.3-101). Under this regulation, the underlying assets and properties
of corporations, partnerships and certain other entities in which a Plan makes
an 'equity'
 
                                       68

<PAGE>

investment could be deemed for purposes of ERISA and Section 4975 of the Code to
be assets of the investing Plan in certain circumstances. In such a case, the
fiduciary making such an investment for the Plan could be deemed to have
delegated his or her asset management responsibility, the underlying assets and
properties could be subject to ERISA's reporting and disclosure requirements,
and transactions involving the underlying assets and properties could be subject
to the fiduciary responsibility requirements of ERISA and the prohibited
transaction provisions of Section 4975 of the Code. Certain exceptions to the
regulation may apply in the case of a Plan's investment in the Certificates, but
the Company cannot predict in advance whether any such exceptions will apply due
to the factual nature of the conditions to be met. Accordingly, because the
Mortgage Loans, Agency Securities or Contracts may be deemed Plan assets of each
Plan that purchases Certificates, an investment in the Certificates by a Plan
might give rise to a prohibited transaction under ERISA Sections 406 or 407 and
be subject to an excise tax under Code Section 4975 unless a statutory or
administrative exemption applies.
 
     DOL Prohibited Transaction Class Exemption 83-1 ('PTE 83-1') exempts from
the prohibited transaction rules of ERISA and Section 4975 of the Code certain
transactions relating to the operation of residential mortgage pool investment
trusts and the purchase, sale and holding of 'mortgage pool pass-through
certificates' in the initial issuance of such certificates. PTE 83-1 permits,
subject to certain conditions, transactions which might otherwise be prohibited
between Plans and Parties in Interest with respect to those Plans involving the
origination, servicing, operation and termination of mortgage pools consisting
of mortgage loans secured by first or second mortgages or deeds of trust on
single-family residential property, and the acquisition and holding of certain
mortgage pool pass-through certificates representing an interest in such
mortgage pools by Plans.
 
     PTE 83-1 sets forth three general conditions which must be satisfied for
any transaction to be eligible for exemption: (i) the maintenance of a system of
insurance or other protection for the pooled mortgage loans and property
securing such loans, and for indemnifying certificateholders against reductions
in pass-through payments due to property damage or defaults in loan payments in
an amount not less than the greater of one percent of the aggregate principal
balance of all covered pooled mortgage loans or the principal balance of the
largest covered pooled mortgage loan; (ii) the existence of a pool trustee who
is not an affiliate of the pool sponsor; and (iii) a limitation on the amount of
the payments retained by the pool sponsor, together with other funds inuring to
its benefit, to not more than adequate consideration for selling the mortgage
loans plus reasonable compensation for services provided by the pool sponsor to
the mortgage pool.
 
     Although the Trustee for any series of Certificates will be unaffiliated
with the Company, there can be no assurance that the system of insurance or
subordination will meet the general or specific conditions referred to above. In
addition, the nature of a Trust Fund's assets or the characteristics of one or
more classes of the related series of Certificates may not be included within
the scope of PTE 83-1 or any other class exemption under ERISA. The Prospectus
Supplement will provide additional information with respect to the application
of ERISA and Section 4975 of the Code to the related Certificates.
 
     Several underwriters of mortgage-backed securities have applied for and
obtained individual ERISA prohibited transaction exemptions which are in some
respects broader than PTE 83-1. Such exemptions only apply to mortgage-backed
securities which, in addition to satisfying other conditions, are sold in an
offering with respect to which such underwriter serves as the sole or a managing
underwriter, or as a selling or placement agent. If such an exemption might be
applicable to a series of Certificates, the related Prospectus Supplement will
refer to such possibility.
 
     Each Plan fiduciary who is responsible for making the investment decisions
whether to purchase or commit to purchase and to hold Certificates must make its
own determination as to whether the general and the specific conditions of PTE
83-1 have been satisfied, or as to the availability of any other prohibited
transaction exemptions. Each Plan fiduciary should also determine whether, under
the general fiduciary standards of investment prudence and diversification, an
investment in the Certificates is appropriate for the Plan, taking into account
the overall investment policy of the Plan and the composition of the Plan's
investment portfolio.
 
     Unless otherwise specified in the Prospectus Supplement, the Agreement will
provide that the Residual Certificates of any series of Certificates with
respect to which a REMIC election has been made may not be acquired by a Plan.
 
                                       69

<PAGE>

     Any Plan proposing to invest in Certificates should consult with its
counsel to confirm that such investment will not result in a prohibited
transaction and will satisfy the other requirements of ERISA and the Code.
 
                    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
GENERAL
 
     The following generally describes the anticipated material federal income
tax consequences of purchasing, owning and disposing of Certificates. It does
not address special rules which may apply to particular types of investors. The
authorities on which this discussion is based are subject to change or differing
interpretations, and any such change or interpretation could apply
retroactively. Investors should consult their own tax advisors regarding the
Certificates.
 
     For purposes of this discussion, unless otherwise specified, the term
'Mortgage Loans' will be used to refer to Mortgage Loans, Agency Securities and
Contracts, and the term 'Owner' will refer to the beneficial owner of a
Certificate.
 
REMIC ELECTIONS
 
     Under the Internal Revenue Code of 1986 (the 'Code'), an election may be
made to treat each Trust Fund related to a Series of Certificates (or segregated
pools of assets within the Trust Fund) as a 'real estate mortgage investment
conduit' ('REMIC') within the meaning of Section 860D(a) of the Code. If one or
more REMIC elections are made, the Certificates of any Class will be either
'regular interests' in a REMIC within the meaning of Section 860G(a)(1) of the
Code ('Regular Certificates') or 'residual interests' in a REMIC within the
meaning of Section 860G(a)(2) of the Code ('Residual Certificates'). The
Prospectus Supplement for each Series of Certificates will indicate whether an
election will be made to treat each Trust Fund as one or more REMICs, and if so,
which Certificates will be Regular Certificates and which will be Residual
Certificates.
 
     If a REMIC election is made, each Trust Fund, or each portion thereof that
is treated as a separate REMIC, will be referred to as a 'REMIC Pool'. If a
Trust Fund is comprised of two REMIC Pools, one will be an 'Upper-Tier REMIC'
and one a 'Lower-Tier REMIC'. The assets of the Lower-Tier REMIC will consist of
the Mortgage Loans and related Trust Fund assets. The assets of the Upper-Tier
REMIC will consist of all of the regular interests issued by the Lower-Tier
REMIC.
 
     The discussion below under the heading 'REMIC Certificates' considers
Series for which a REMIC election will be made. Series for which no such
election will be made are addressed under 'Non-REMIC Certificates'.
 
REMIC CERTIFICATES
 
     The discussion in this section applies only to a Series of Certificates for
which a REMIC election is made.
 
TAX OPINION
 
     Qualification as a REMIC requires ongoing compliance with certain
conditions. Upon the issuance of each Series of Certificates for which a REMIC
election is made, Cleary, Gottlieb, Steen & Hamilton, counsel to the Company,
will deliver its opinion generally to the effect that, with respect to each such
Series of Certificates, under then existing law and assuming compliance by the
Company, the Servicer and the Trustee for such Series with all of the provisions
of the related Agreement (and such other agreements and representations as may
be referred to in such opinion), each REMIC Pool will be a REMIC, and the
Certificates of such Series will be treated as either Regular Certificates or
Residual Certificates.
 
                                       70

<PAGE>

STATUS OF CERTIFICATES
 
     The Certificates will be:
 
          o assets described in Code Section 7701(a)(19)(C); and
 
          o 'real estate assets' under Code Section 856(c)(4)(A),
 
to the extent the assets of the related REMIC Pool are so treated. Interest on
the Regular Certificates will be 'interest on obligations secured by mortgages
on real property or on interests in real property' within the meaning of Code
Section 856(c)(3)(B) in the same proportion that the income of the REMIC Pool is
so treated. If at all times 95% or more of the assets or income of the REMIC
Pool qualifies under the foregoing Code sections, the Certificates (and income
thereon) will so qualify in their entirety. The Regular Certificates will also
qualify as 'permitted assets' under Section 860L(c) of the Code.
 
     In the event the assets of the related REMIC Pool include buy-down Mortgage
Loans, it is unclear whether the related buy-down funds would qualify under the
foregoing Code sections. Also, Contracts may be considered to qualify under the
foregoing sections only if the Manufactured Homes securing such Contracts are
considered to be 'permanently fixed' or 'permanently installed'. Contracts may
limit the ability of a borrower to permanently attach a Manufactured Home to its
site.
 
     The rules described in the two preceding paragraphs will be applied to a
Trust Fund consisting of two REMIC Pools as if the Trust Fund were a single
REMIC holding the assets of the Lower-Tier REMIC.
 
INCOME FROM REGULAR CERTIFICATES
 
     General.  Except as otherwise provided in this tax discussion, Regular
Certificates will be taxed as newly originated debt instruments for federal
income tax purposes. Interest, original issue discount and market discount
accrued on a Regular Certificate will be ordinary income to the Owner. All
Owners must account for interest income under the accrual method of accounting,
which may result in the inclusion of amounts in income that are not currently
distributed in cash.
 
     On January 27, 1994, the Internal Revenue Service adopted regulations
applying the original issue discount rules of the Code (the 'OID Regulations').
Except as otherwise noted, the discussion below is based on the OID Regulations.
 
     Original Issue Discount.  Certain Regular Certificates may have 'original
issue discount.' An Owner must include original issue discount in income as it
accrues, without regard to the timing of payments.
 
     The total amount of original issue discount on a Regular Certificate is the
excess of its 'stated redemption price at maturity' over its 'issue price.' The
issue price for any Regular Certificate is the price (including any accrued
interest) at which a substantial portion of the Class of Certificates including
such Regular Certificate are first sold to the public. In general, the stated
redemption price at maturity is the sum of all payments made on the Regular
Certificate, other than payments of interest that (i) are actually payable at
least annually over the entire life of the Certificates and (ii) are based on a
single fixed rate or variable rate (or certain combinations of fixed and
variable rates). The stated redemption price at maturity of a Regular
Certificate always includes its original principal amount, but generally does
not include distributions of stated interest, except in the case of Accrual
Certificates, and, as discussed below, Interest Only Certificates. An 'Interest
Only Certificate' is a Certificate entitled to receive distributions of some or
all of the interest on the Mortgage Loans or other assets in a REMIC Pool and
that has either a notional or nominal principal amount. Special rules for
Regular Certificates that provide for interest based on a variable rate are
discussed below in 'Income from Regular Certificates--Variable Rate Regular
Certificates.'
 
     With respect to an Interest Only Certificate, the stated redemption price
at maturity is likely to be the sum of all payments thereon, determined in
accordance with the Prepayment Assumption (as defined below). In that event,
Interest Only Certificates would always have original issue discount.
Alternatively, in the case of an Interest Only Certificate with some principal
amount, the stated redemption price at maturity might be determined under the
general rules described in the preceding paragraph. If, applying those rules,
the stated redemption price at maturity were considered to equal the principal
amount of such Certificate, then the rules
 
                                       71

<PAGE>

described below under 'Premium' would apply. The Prepayment Assumption is the
assumed rate of prepayment of the Mortgage Loans used in pricing the Regular
Certificates. The Prepayment Assumption will be set forth in the related
Supplement.
 
     Under a de minimis rule, original issue discount on a Regular Certificate
will be considered zero if it is less than 0.25% of the Certificate's stated
redemption price at maturity multiplied by the Certificate's weighted average
maturity. The weighted average maturity of a Regular Certificate is computed
based on the number of full years (i.e., rounding down partial years) each
distribution of principal (or other amount included in the stated redemption
price at maturity) is scheduled to be outstanding. The schedule of such
distributions likely should be determined in accordance with the Prepayment
Assumption.
 
     The Owner of a Regular Certificate generally must include in income the
original issue discount that accrues for each day on which the Owner holds such
Certificate, including the date of purchase, but excluding the date of
disposition. The original issue discount accruing in any period equals:
 
                             PV End + Dist - PV Beg
 
Where:
 
     PV End = present value of all remaining distributions to be made as of the
              end of the period;
 
     Dist   = distributions made during the period includible in the stated
              redemption price at maturity; and
 
     PV Beg = present value of all remaining distributions as of the beginning
              of the period.
 
The present value of the remaining distributions is calculated based on (i) the
original yield to maturity of the Regular Certificate, (ii) events (including
actual prepayments) that have occurred prior to the end of the period and (iii)
the Prepayment Assumption. For these purposes, the original yield to maturity of
a Regular Certificate will be calculated based on its issue price, assuming that
the Certificate will be prepaid in all periods in accordance with the Prepayment
Assumption, and with compounding at the end of each accrual period used in the
formula.
 
     Assuming the Regular Certificates have monthly Distribution Dates, discount
would be computed under the formula generally for the one-month periods (or
shorter initial period) ending on each Distribution Date. The original issue
discount accruing during any accrual period is divided by the number of days in
the period to determine the daily portion of original issue discount for each
day.
 
     The daily portions of original issue discount generally will increase if
prepayments on the underlying Mortgage Loans exceed the Prepayment Assumption
and decrease if prepayments are slower than the Prepayment Assumption (changes
in the rate of prepayments having the opposite effect in the case of an Interest
Only Certificate). If the relative principal payment priorities of the Classes
of Regular Certificates of a Series change, any increase or decrease in the
present value of the remaining payments to be made on any such Class will affect
the computation of original issue discount for the period in which the change in
payment priority occurs.
 
     If original issue discount computed as described above is negative for any
period, the Owner generally will not be allowed a current deduction for the
negative amount but instead will be entitled to offset such amount only against
future positive original issue discount from such Certificate. However, while
not free from doubt, such an Owner may be entitled to deduct 'negative original
issue discount' to the extent the Owner's adjusted basis (as defined in 'Sale or
Exchange of Certificates' below) in the Certificate remaining after such
deduction is not less than the principal amount of the Certificate.
 
     Acquisition Premium.  If an Owner of a Regular Certificate acquires such
Certificate at a price greater than its 'adjusted issue price,' but less than
its remaining stated redemption price at maturity, the daily portion for any day
(as computed above) is reduced by an amount equal to the product of (i) such
daily portion and (ii) a fraction, the numerator of which is the amount by which
the price exceeds the adjusted issue price and the denominator of which is the
sum of the daily portions for such Regular Certificate for all days on and after
the date of purchase. The adjusted issue price of a Regular Certificate on any
given day is its issue price, increased by
 
                                       72

<PAGE>

all original issue discount that has accrued on such Certificate and reduced by
the amount of all previous distributions on such Certificate of amounts included
in its stated redemption price at maturity.
 
     Market Discount.  A Regular Certificate may have market discount (as
defined in the Code). Market discount equals the excess of the adjusted issue
price of a Certificate over the Owner's adjusted basis in the Certificate. The
Owner of a Certificate with market discount must report ordinary interest
income, as the Owner receives distributions on the Certificate of principal or
other amounts included in its stated redemption price at maturity, equal to the
lesser of (a) the excess of the amount of those distributions over the amount,
if any, of accrued original issue discount on the Certificate or (b) the portion
of the market discount that has accrued and not previously been included in
income. Also, such Owner must treat gain from the disposition of the Certificate
as ordinary income to the extent of any accrued, but unrecognized, market
discount. Alternatively, an Owner may elect in any taxable year to include
market discount in income currently as it accrues on all market discount
instruments acquired by the Owner in that year or thereafter. An Owner may
revoke such an election only with the consent of the Internal Revenue Service.
 
     In general terms, market discount on a Regular Certificate may be treated,
at the Owner's election, as accruing either (a) on the basis of a constant yield
(similar to the method described above for accruing original issue discount) or
(b) alternatively, either (i) in the case of a Regular Certificate issued
without original issue discount, in the ratio of stated interest distributable
in the relevant period to the total stated interest remaining to be distributed
from the beginning of such period (computed taking into account the Prepayment
Assumption) or (ii) in the case of a Regular Certificate issued with original
issue discount, in the ratio of the amount of original issue discount accruing
in the relevant period to the total remaining original issue discount at the
beginning of such period. An election to accrue market discount on a Regular
Certificate on a constant yield basis is irrevocable with respect to that
Certificate.
 
     An Owner may be required to defer a portion of the deduction for interest
expense on any indebtedness that the Owner incurs or maintains in order to
purchase or carry a Regular Certificate that has market discount. The deferred
amount would not exceed the market discount that has accrued but not been taken
into income. Any such deferred interest expense is, in general, allowed as a
deduction not later than the year in which the related market discount income is
recognized.
 
     Market discount with respect to a Regular Certificate will be considered to
be zero if such market discount is de minimis under a rule similar to that
described above in the fourth paragraph under 'Original Issue Discount.' Owners
should consult their own tax advisors regarding the application of the market
discount rules as well as the advisability of making any election with respect
to market discount.
 
     Discount on a Regular Certificate that is neither original issue discount
nor market discount, as defined above, must be allocated ratably among the
principal payments on the Certificate and included in income (as gain from the
sale or exchange of the Certificate) as the related principal payments are made
(whether as scheduled payments or prepayments).
 
     Premium.  A Regular Certificate, other than an Accrual Certificate or, as
discussed above under 'Original Issue Discount', an Interest Only Certificate,
purchased at a cost (net of accrued interest) greater than its principal amount
generally is considered to be purchased at a premium. The Owner may elect under
Code Section 171 to amortize such premium under the constant yield method, using
the Prepayment Assumption. To the extent the amortized premium is allocable to
interest income from the Regular Certificate, it is treated as an offset to such
interest rather than as a separate deduction. An election made by an Owner would
generally apply to all its debt instruments and may not be revoked without the
consent of the Internal Revenue Service.
 
     Special Election to Apply OID Rules.  In lieu of the rules described above
with respect to de minimis discount, acquisition premium, market discount and
premium, an Owner of a Regular Certificate may elect to accrue such discount, or
adjust for such premium, by applying the principles of the OID rules described
above. An election made by a taxpayer with respect to one obligation can affect
other obligations it holds. Owners should consult with their tax advisors
regarding the merits of making this election.
 
     Retail Regular Certificates.  For purposes of the original issue and market
discount rules, a repayment in full of a Retail Certificate that is subject to
payment in units or other increments, rather than on a pro rata basis with other
Retail Certificates, will be treated in the same manner as any other prepayment.
 
                                       73

<PAGE>

     Variable Rate Regular Certificates.  The Regular Certificates may provide
for interest that varies based on an interest rate index. The OID Regulations
provide special rules for calculating income from certain 'variable rate debt
instruments' or 'VRDIs.' A debt instrument must meet certain technical
requirements to qualify as a VRDI, which are outlined in the next paragraph.
Under the regulations, income on a VRDI is calculated by (1) creating a
hypothetical debt instrument that pays fixed interest at rates equivalent to the
variable interest, (2) applying the original issue discount rules of the Code to
that fixed rate instrument, and (3) adjusting the income accruing in any accrual
period by the difference between the assumed fixed interest amount and the
actual amount for the period. In general, where a variable rate on a debt
instrument is based on an interest rate index (such as LIBOR), a fixed rate
equivalent to a variable rate is determined based on the value of the index as
of the issue date of the debt instrument. In cases where rates are reset at
different intervals over the life of a VRDI, adjustments are made to ensure that
the equivalent fixed rate for each accrual period is based on the same reset
interval.
 
     A debt instrument must meet a number of requirements in order to qualify as
a VRDI. A VRDI cannot be issued at a premium above its principal amount that
exceeds a specified percentage of its principal amount (15%, or if less 1.5%
times its weighted average life). As a result, Interest Only Certificates will
never be VRDIs. Also, a debt instrument that pays interest based on a multiple
of an interest rate index is not a VRDI if the multiple is less than or equal to
0.65 or greater than 1.35, unless, in general, interest is paid based on a
single formula that lasts over the life of the instrument. A debt instrument is
not a VRDI if it is subject to caps and floors, unless they remain the same over
the life of the instrument or are not expected to change significantly the yield
on the instrument. Variable rate Regular Certificates other than Interest Only
Certificates may or may not qualify as VRDIs depending on their terms.
 
     In a case where a variable rate Regular Certificate does not qualify as a
VRDI, it will be treated under the OID Regulations as a contingent payment debt
instrument. The Internal Revenue Service has issued final regulations addressing
contingent payment debt instruments, but such regulations are not applicable by
their terms to REMIC regular interests. Until further guidance is forthcoming,
one method of calculating income on such a Regular Certificate that appears to
be reasonable would be to apply the principles governing VRDIs outlined above.
 
     Subordinated Certificates.  Certain Series of Certificates may contain one
or more Classes of subordinated Certificates. In the event there are defaults or
delinquencies on the related Mortgage Loans, amounts that otherwise would be
distributed on a Class of subordinated Certificates may instead be distributed
on other more senior Classes of Certificates. Since Owners of Regular
Certificates are required to report income under an accrual method, Owners of
subordinated Certificates will be required to report income without giving
effect to delays and reductions in distributions on such Certificates
attributable to defaults or delinquencies on the Mortgage Loans, except to the
extent that it can be established that amounts are uncollectible. As a result,
the amount of income reported by an Owner of a subordinated Certificate in any
period could significantly exceed the amount of cash distributed to such Owner
in that period. The Owner will eventually be allowed a loss (or be allowed to
report a lesser amount of income) to the extent that the aggregate amount of
distributions on the subordinated Certificate is reduced as a result of defaults
and delinquencies on the Mortgage Loans. Such a loss could in some circumstances
be a capital loss. Also, the timing and amount of such losses or reductions in
income are uncertain. Owners of subordinated Certificates should consult their
tax advisors on these points.
 
INCOME FROM RESIDUAL CERTIFICATES
 
     Taxation of REMIC Income.  Generally, Owners of Residual Certificates in a
REMIC Pool ('Residual Owners') must report ordinary income or loss equal to
their pro rata shares (based on the portion of all Residual Certificates they
own) of the taxable income or net loss of the REMIC. Such income must be
reported regardless of the timing or amounts of distributions on the Residual
Certificates.
 
     The taxable income of a REMIC Pool is generally determined under the
accrual method of accounting in the same manner as the taxable income of an
individual taxpayer. Taxable income is generally gross income, including
interest and original issue discount income, if any, on the assets of the REMIC
Pool and income from the amortization of any premium on Regular Certificates,
minus deductions. Market discount (as defined in the Code) with respect to
Mortgage Loans held by a REMIC Pool is recognized in the same fashion as if it
were
 
                                       74

<PAGE>

original issue discount. Deductions include interest and original issue discount
expense on the Regular Certificates, reasonable servicing fees attributable to
the REMIC Pool, other administrative expenses and amortization of any premium on
assets of the REMIC Pool. As previously discussed, the timing of recognition of
'negative original issue discount,' if any, on a Regular Certificate is
uncertain; as a result, the timing of recognition of the corresponding income to
the REMIC Pool is also uncertain.
 
     If the Trust Fund consists of an Upper-Tier REMIC and a Lower-Tier REMIC,
the OID Regulations provide that the regular interests issued by the Lower-Tier
REMIC to the Upper-Tier REMIC will be treated as a single debt instrument for
purposes of the original issue discount provisions. A determination that these
regular interests are not treated as a single debt instrument would have a
material adverse effect on the Owners of Residual Certificates issued by the
Lower-Tier REMIC.
 
     A Residual Owner may not amortize the cost of its Residual Certificate.
Taxable income of the REMIC Pool, however, will not include cash received by the
REMIC Pool that represents a recovery of the REMIC Pool's initial basis in its
assets, and such basis will include the issue price of the Residual Certificates
(assuming the issue price is positive). Such recovery of basis by the REMIC Pool
will have the effect of amortization of the issue price of the Residual
Certificate over its life. The period of time over which such issue price is
effectively amortized, however, may be longer than the economic life of the
Residual Certificate. The issue price of a Residual Certificate is the price at
which a substantial portion of the Class of Certificates including the Residual
Certificate are first sold to the public (or if the Residual Certificate is not
publicly offered, the price paid by the first buyer).
 
     A subsequent Residual Owner must report the same amounts of taxable income
or net loss attributable to the REMIC Pool as an original Owner. No adjustments
are made to reflect the purchase price.
 
     Losses.  A Residual Owner that is allocated a net loss of the REMIC Pool
may not deduct such loss currently to the extent it exceeds the Owner's adjusted
basis (as defined in 'Sale or Exchange of Certificates' below) in its Residual
Certificate. A Residual Owner that is a U.S. person (as defined below in
'Taxation of Certain Foreign Investors'), however, may carry over any disallowed
loss to offset any taxable income generated by the same REMIC Pool.
 
     Excess Inclusions.  A portion of the taxable income allocated to a Residual
Certificate is subject to special tax rules. That portion, referred to as an
'excess inclusion,' is calculated for each calendar quarter and equals the
excess of such taxable income for the quarter over the daily accruals for the
quarter. The daily accruals equal the product of (i) 120% of the federal
long-term rate under Code Section 1274(d) for the month which includes the
Closing Date (determined on the basis of quarterly compounding and properly
adjusted for the length of the quarter) and (ii) the adjusted issue price of the
Certificate at the beginning of such quarter. The adjusted issue price of a
Residual Certificate at the beginning of a quarter is the issue price of the
Certificate, plus the amount of daily accruals on the Certificate for all prior
quarters, decreased (but not below zero) by any prior distributions on the
Certificate. If the aggregate value of the Residual Certificates is not
considered to be 'significant,' then to the extent provided in Treasury
regulations, a Residual Owner's entire share of REMIC taxable income will be
treated as an excess inclusion. The regulations that have been adopted under
Code Sections 860A through 860G (the 'REMIC Regulations') do not contain such a
rule.
 
     Excess inclusions generally may not be offset by unrelated losses or loss
carryforwards or carrybacks of a Residual Owner. In addition, for all taxable
years beginning after August 20, 1996, and unless a Residual Owner elects
otherwise for all other taxable years, the alternate minimum taxable income of a
Residual Owner for a taxable year may not be less than the Residual Owner's
excess inclusions for the taxable year and excess inclusions are disregarded
when calculating a Residual Owner's alternate minimum tax net operating loss
deduction.
 
     Excess inclusions are treated as unrelated business taxable income for an
organization subject to the tax on unrelated business income. In addition, under
Treasury regulations yet to be issued, if a real estate investment trust,
regulated investment company or certain other pass-through entities are Residual
Owners, a portion of the distributions made by such entities may be treated as
excess inclusions.
 
     Distributions.  Distributions on a Residual Certificate (whether at their
scheduled times or as a result of prepayments) generally will not result in any
taxable income or loss to the Residual Owner. If the amount of any
 
                                       75

<PAGE>

distribution exceeds a Residual Owner's adjusted basis in its Residual
Certificate, however, the Residual Owner will recognize gain (treated as gain
from the sale or exchange of its Residual Certificate) to the extent of such
excess. See 'Sale or Exchange of Certificates' below.
 
     Prohibited Transactions; Special Taxes.  Net income recognized by a REMIC
Pool from 'prohibited transactions' is subject to a 100% tax and is disregarded
in calculating the REMIC Pool's taxable income. In addition, a REMIC Pool is
subject to federal income tax at the highest corporate rate on 'net income from
foreclosure property' (which has a technical definition). A 100% tax also
applies to certain contributions to a REMIC Pool made after it is formed. It is
not anticipated that any REMIC Pool will (i) engage in prohibited transactions
in which it recognizes a significant amount of net income, (ii) receive
contributions of property that are subject to tax, or (iii) derive a significant
amount of net income from foreclosure property that is subject to tax.
 
     Negative Value Residual Certificates.  The federal income tax treatment of
any consideration paid to a transferee on a transfer of a Residual Certificate
is unclear. Such a transferee should consult its tax advisor. The preamble to
the REMIC Regulations indicates that the Internal Revenue Service may issue
future guidance on the tax treatment of such payments.
 
     Mark to Market Rules.  A REMIC residual interest that is acquired on or
after January 4, 1995 is not a 'security' for the purposes of Code Section 475,
and thus is not subject to the mark to market rules.
 
     The method of taxation of Residual Certificates described in this section
can produce a significantly less favorable after-tax return for a Residual
Certificate than would be the case if the Certificate were taxable as a debt
instrument. Also, a Residual Owner's return may be adversely affected by the
excess inclusions rules described above. In certain periods, taxable income and
the resulting tax liability for a Residual Owner may exceed any distributions it
receives. In addition, a substantial tax may be imposed on certain transferors
of a Residual Certificate and certain Residual Owners that are 'pass-thru'
entities. See 'Transfers of Residual Certificates' below. Investors should
consult their tax advisors before purchasing a Residual Certificate.
 
SALE OR EXCHANGE OF CERTIFICATES
 
     An Owner generally will recognize gain or loss upon sale or exchange of a
Regular or Residual Certificate equal to the difference between the amount
realized and the Owner's adjusted basis in the Certificate. The adjusted basis
in a Certificate generally will equal the cost of the Certificate, increased by
income previously recognized, and reduced (but not below zero) by previous
distributions, and by any amortized premium in the case of a Regular
Certificate, or net losses allowed as a deduction in the case of a Residual
Certificate.
 
     Except as described below, any gain or loss on the sale or exchange of a
Certificate held as a capital asset will be capital gain or loss and will be
long-term or short-term depending on whether the Certificate has been held for
more than one year. Such gain or loss will be ordinary income or loss (i) for a
bank or thrift institution, and (ii) in the case of a Regular Certificate, (a)
to the extent of any accrued, but unrecognized, market discount, or (b) to the
extent income recognized by the Owner is less than the income that would have
been recognized if the yield on such Certificate were 110% of the applicable
federal rate under Code Section 1274(d).
 
     A Residual Owner should be allowed a loss upon termination of the REMIC
Pool equal to the amount of the Owner's remaining adjusted basis in its Residual
Certificates. Whether the termination will be treated as a sale or exchange
(resulting in a capital loss) is unclear.
 
     Except as provided in Treasury regulations, the wash sale rules of Code
Section 1091 will apply to dispositions of a Residual Certificate where the
seller of the interest, during the period beginning six months before the sale
or disposition of the interest and ending six months after such sale or
disposition, acquires (or enters into any other transaction that results in the
application of Code Section 1091) any REMIC residual interest, or any interest
in a 'taxable mortgage pool' (such as a non-REMIC owner trust) that is
economically comparable to a residual interest.
 
                                       76

<PAGE>

TAXATION OF CERTAIN FOREIGN INVESTORS
 
     Regular Certificates.  A Regular Certificate held by an Owner that is a
non-U.S. person (as defined below), and that has no connection with the United
States other than owning the Certificate, will not be subject to U.S.
withholding or income tax with respect to the Certificate provided such Owner
(i) is not a '10-percent shareholder' within the meaning of Code Section
871(h)(3)(B) or a controlled foreign corporation described in Code Section
881(c)(3)(C), and (ii) provides an appropriate statement, signed under penalties
of perjury, identifying the Owner and stating, among other things, that the
Owner is a non-U.S. person. If these conditions are not met, a 30% withholding
tax will apply to interest (including original issue discount) unless an income
tax treaty reduces or eliminates such tax or unless the interest is effectively
connected with the conduct of a trade or business within the United States by
such Owner. In the latter case, such Owner will be subject to United States
federal income tax with respect to all income from the Certificate at regular
rates then applicable to U.S. taxpayers (and in the case of a corporation,
possibly also the branch profits tax).
 
     The term 'non-U.S. person' means any person other than a U.S. person. A
U.S. person is a citizen or resident of the United States, a corporation,
partnership or other entity created or organized in or under the laws of the
United States or any political subdivision thereof, or an estate or trust that
is subject to U.S. federal income tax regardless of the source of its income.
 
     Residual Certificates.  A Residual Owner that is a non-U.S. person, and
that has no connection with the United States other than owning a Residual
Certificate, will not be subject to U.S. withholding or income tax with respect
to the Certificate (other than with respect to excess inclusions) provided that
(i) the conditions described in the second preceding paragraph with respect to
Regular Certificates are met and (ii) in the case of a Residual Certificate in a
REMIC Pool holding Mortgage Loans, the Mortgage Loans were originated after July
18, 1984. Excess inclusions are subject to a 30% withholding tax in all events
(notwithstanding any contrary tax treaty provisions) when distributed to the
Residual Owner (or when the Residual Certificate is disposed of). The Code
grants the Treasury Department authority to issue regulations requiring excess
inclusions to be taken into account earlier if necessary to prevent avoidance of
tax. The REMIC Regulations do not contain such a rule. The preamble thereto
states that the Internal Revenue Service is considering issuing regulations
concerning withholding on distributions to foreign holders of residual interests
to satisfy accrued tax liability due to excess inclusions.
 
     With respect to a Residual Certificate that has been held at any time by a
non-U.S. person, the Trustee (or its agent) will be entitled to withhold (and to
pay to the Internal Revenue Service) any portion of any payment on such Residual
Certificate that the Trustee reasonably determines is required to be withheld.
If the Trustee (or its agent) reasonably determines that a more accurate
determination of the amount required to be withheld from a distribution can be
made within a reasonable period after the scheduled date for such distribution,
it may hold such distribution in trust for the Residual Owner until such
determination can be made.
 
     Special tax rules and restrictions that apply to transfers of Residual
Certificates to and from non-U.S. persons are discussed in the next section.
 
TRANSFERS OF RESIDUAL CERTIFICATES
 
     Special tax rules and restrictions apply to transfers of Residual
Certificates to disqualified organizations or foreign investors, and to
transfers of noneconomic Residual Certificates.
 
     Disqualified Organizations.  In order to comply with the REMIC rules of the
Code, the Agreement will provide that no legal or beneficial interest in a
Residual Certificate may be transferred to, or registered in the name of, any
person unless (i) the proposed purchaser provides to the Trustee an 'affidavit'
(within the meaning of the REMIC Regulations) to the effect that, among other
items, such transferee is not a 'disqualified organization' (as defined below),
is not purchasing a Residual Certificate as an agent for a disqualified
organization (i.e., as a broker, nominee, or other middleman) and is not an
entity (a 'Book-Entry Nominee') that holds REMIC residual securities as nominee
to facilitate the clearance and settlement of such securities through electronic
book-entry changes in accounts of participating organizations and (ii) the
transferor states in writing to the Trustee that it has no actual knowledge that
such affidavit is false.
 
                                       77

<PAGE>

     If despite these restrictions a Residual Certificate is transferred to a
disqualified organization, the transfer may result in a tax equal to the product
of (i) the present value of the total anticipated future excess inclusions with
respect to such Certificate and (ii) the highest corporate marginal federal
income tax rate. Such a tax generally is imposed on the transferor, except that
if the transfer is through an agent for a disqualified organization, the agent
is liable for the tax. A transferor is not liable for such tax if the transferee
furnishes to the transferor an affidavit that the transferee is not a
disqualified organization and, as of the time of the transfer, the transferor
does not have actual knowledge that the affidavit is false.
 
     A disqualified organization may hold an interest in a REMIC Certificate
through a 'pass-thru entity' (as defined below). In that event, the pass-thru
entity is subject to tax (at the highest corporate marginal federal income tax
rate) on excess inclusions allocable to the disqualified organization. However,
such tax will not apply to the extent the pass-thru entity receives affidavits
from record holders of interests in the entity stating that they are not
disqualified organizations and the entity does not have actual knowledge that
the affidavits are false.
 
     For these purposes, (i) 'disqualified organization' means the United
States, any state or political subdivision thereof, any foreign government, any
international organization, any agency or instrumentality of any of the
foregoing, certain organizations that are exempt from taxation under the Code
(including tax on excess inclusions) and certain corporations operating on a
cooperative basis, and (ii) 'pass-thru entity' means any regulated investment
company, real estate investment trust, common trust fund, partnership, trust or
estate and certain corporations operating on a cooperative basis. Except as may
be provided in Treasury regulations, any person holding an interest in a
pass-thru entity as a nominee for another will, with respect to that interest,
be treated as a pass-thru entity. Certain additional rules also apply to
'electing large partnerships.' If an electing large partnership holds a Residual
Certificate, all interests in the electing large partnership are treated as held
by disqualified organizations for the purposes of the tax on pass-through
entities described above. The exception to this tax described above for
pass-through entities that collect affidavits from their record holders is not
available to electing large partnerships.
 
     Foreign Investors.  Under the REMIC Regulations, a transfer of a Residual
Certificate to a non-U.S. person that will not hold the Certificate in
connection with a U.S. trade or business will be disregarded for all federal tax
purposes if the Certificate has 'tax avoidance potential.' A Residual
Certificate has tax avoidance potential unless, at the time of transfer, the
transferor reasonably expects that:
 
          (i) for each excess inclusion, the REMIC will distribute to the
     transferee residual interest holder an amount that will equal at least 30
     percent of the excess inclusion, and
 
          (ii) each such amount will be distributed at or after the time at
     which the excess inclusion accrues and not later than the close of the
     calendar year following the calendar year of accrual.
 
A transferor has such reasonable expectation if the above test would be met
assuming that the REMIC's Mortgage Loans will prepay at each rate between 50
percent and 200 percent of the Prepayment Assumption.
 
     The REMIC Regulations also provide that a transfer of a Residual
Certificate from a non-U.S. person to a U.S. person (or to a non-U.S. person
that will hold the Certificate in connection with a U.S. trade or business) is
disregarded if the transfer has 'the effect of allowing the transferor to avoid
tax on accrued excess inclusions.'
 
     In light of these provisions, the Agreement provides that a Residual
Certificate may not be purchased by or transferred to any person that is not a
U.S. person, unless (i) such person holds the Certificate in connection with the
conduct of a trade or business within the United States and furnishes the
transferor and the Trustee with an effective Internal Revenue Service Form 4224,
or (ii) the transferee delivers to both the transferor and the Trustee an
opinion of nationally recognized tax counsel to the effect that such transfer is
in accordance with the requirements of the Code and the regulations promulgated
thereunder and that such transfer will not be disregarded for federal income tax
purposes.
 
     Noneconomic Residual Certificates.  Under the REMIC Regulations, a transfer
of a 'noneconomic' Residual Certificate will be disregarded for all federal
income tax purposes if a significant purpose of the transfer is to impede the
assessment or collection of tax. Such a purpose exists if the transferor, at the
time of the transfer,
 
                                       78

<PAGE>

either knew or should have known that the transferee would be unwilling or
unable to pay taxes due on its share of the taxable income of the REMIC. A
transferor is presumed to lack such knowledge if:
 
          (i) the transferor conducted, at the time of the transfer, a
     reasonable investigation of the financial condition of the transferee and
     found that the transferee had historically paid its debts as they came due
     and found no significant evidence to indicate that the transferee will not
     continue to pay its debts as they become due, and
 
          (ii) the transferee represents to the transferor that it understands
     that, as the holder of the noneconomic residual interest, it may incur tax
     liabilities in excess of any cash flows generated by the interest and that
     it intends to pay taxes associated with holding the residual interest as
     they become due.
 
A Residual Certificate (including a Certificate with significant value at
issuance) is noneconomic unless, at the time of the transfer, (i) the present
value of the expected future distributions on the Certificate at least equals
the product of the present value of the anticipated excess inclusions and the
highest corporate income tax rate in effect for the year in which the transfer
occurs, and (ii) the transferor reasonably expects that the transferee will
receive distributions on the Certificate, at or after the time at which taxes
accrue, in an amount sufficient to pay the taxes.
 
     The Agreement will provide that no legal or beneficial interest in a
Residual Certificate may be transferred to, or registered in the name of, any
person unless the transferor represents to the Trustee that it has conducted the
investigation of the transferee, and made the findings, described in the
preceding paragraph, and the proposed transferee provides to the Trustee the
transferee representations described in the preceding paragraph, and agrees that
it will not transfer the Certificate to any person unless that person agrees to
comply with the same restrictions on future transfers.
 
SERVICING COMPENSATION AND OTHER REMIC POOL EXPENSES
 
     Under Code Section 67, an individual, estate or trust is allowed certain
itemized deductions only to the extent that such deductions, in the aggregate,
exceed 2% of the Owner's adjusted gross income, and such a person is not allowed
such deductions to any extent in computing its alternative minimum tax
liability. Under Treasury regulations, if such a person is an Owner of a REMIC
Certificate, the REMIC Pool is required to allocate to such a person its share
of the servicing fees and administrative expenses paid by a REMIC together with
an equal amount of income. Those fees and expenses are deductible as an offset
to the additional income, but subject to the 2% floor.
 
     In the case of a REMIC Pool that has multiple classes of Regular
Certificates with staggered maturities, fees and expenses of the REMIC Pool
would be allocated entirely to the Owners of Residual Certificates. However, if
the REMIC Pool were a 'single-class REMIC' as defined in applicable Treasury
regulations, such deductions would be allocated proportionately among the
Regular and Residual Certificates.
 
REPORTING AND ADMINISTRATIVE MATTERS
 
     Annual reports will be made to the Internal Revenue Service, and to Holders
of record of Regular Certificates, and Owners of Regular Certificates holding
through a broker, nominee or other middleman, that are not excepted from the
reporting requirements, of accrued interest, original issue discount,
information necessary to compute accruals of market discount, information
regarding the percentage of the REMIC Pool's assets meeting the qualified assets
tests described above under 'Status of Certificates' and, where relevant,
allocated amounts of servicing fees and other Code Section 67 expenses. Holders
not receiving such reports may obtain such information from the related REMIC by
contacting the person designated in IRS Publication 938. Quarterly reports will
be made to Residual Holders showing their allocable shares of income or loss
from the REMIC Pool, excess inclusions, and Code Section 67 expenses.
 
     The Trustee will sign and file federal income tax returns for each REMIC
Pool. To the extent allowable, the Company will act as the tax matters person
for each REMIC Pool. Each Owner of a Residual Certificate, by the acceptance of
its Residual Certificate, agrees that the Company will act as the Owner's agent
in the performance of any duties required of the Owner in the event that the
Owner is the tax matters person.
 
                                       79

<PAGE>

     An Owner of a Residual Certificate is required to treat items on its
federal income tax return consistently with the treatment of the items on the
REMIC Pool's return, unless the Owner owns 100% of the Residual Certificate for
the entire calendar year or the Owner either files a statement identifying the
inconsistency or establishes that the inconsistency resulted from incorrect
information received from the REMIC Pool. The Internal Revenue Service may
assess a deficiency resulting from a failure to comply with the consistency
requirement without instituting an administrative proceeding at the REMIC level.
Any person that holds a Residual Certificate as a nominee for another person may
be required to furnish the REMIC Pool, in a manner to be provided in Treasury
regulations, the name and address of such other person and other information.
 
NON-REMIC CERTIFICATES
 
     The discussion in this Section applies only to a Series of Certificates for
which no REMIC election is made.
 
TRUST FUND AS GRANTOR TRUST
 
     Upon issuance of each series of Certificates, Cleary, Gottlieb, Steen &
Hamilton, counsel to the Company, will deliver its opinion to the effect that,
under then current law, assuming compliance by the Company, the Servicer and the
Trustee with all the provisions of the Agreement (and such other agreements and
representations as may be referred to in the opinion), the Trust Fund will be
classified for federal income tax purposes as a grantor trust and not as an
association taxable as a corporation.
 
     Under the grantor trust rules of the Code, each Owner of a Certificate will
be treated for federal income tax purposes as the owner of an undivided interest
in the Mortgage Loans (and any related assets) included in the Trust Fund. The
Owner will include in its gross income, gross income from the portion of the
Mortgage Loans allocable to the Certificate, and may deduct its share of the
expenses paid by the Trust Fund that are allocable to the Certificate, at the
same time and to the same extent as if it had directly purchased and held such
interest in the Mortgage Loans and had directly received payments thereon and
paid such expenses. If an Owner is an individual, trust or estate, the Owner
will be allowed deductions for its share of Trust Fund expenses (including
reasonable servicing fees) only to the extent that the sum of those expenses and
the Owner's other miscellaneous itemized deductions exceeds 2% of adjusted gross
income, and will not be allowed to deduct such expenses for purposes of the
alternative minimum tax. Distributions on a Certificate will not be taxable to
the Owner, and the timing or amount of distributions will not affect the timing
or amount of income or deductions relating to a Certificate.
 
STATUS OF THE CERTIFICATES
 
     The Certificates, other than Interest Only Certificates, will be:
 
          o 'real estate assets' under Code Section 856(c)(4)(A); and
 
          o assets described in Section 7701(a)(19)(C) of the Code,
 
to the extent the assets of the Trust Fund are so treated. Interest income from
such Certificates will be 'interest on obligations secured by mortgages on real
property' under Code Section 856(c)(3)(B) to the extent the income of the Trust
Fund qualifies under that section. An 'Interest Only Certificate' is a
Certificate which is entitled to receive distributions of some or all of the
interest on the Mortgage Loans or other assets in a REMIC Pool and that has
either a notional or nominal principal amount. Although not certain,
Certificates that are Interest Only Certificates should qualify under the
foregoing Code sections to the same extent as other Certificates.
 
POSSIBLE APPLICATION OF STRIPPED BOND RULES
 
     The federal income tax treatment of Certificates will depend on whether
they are subject to the 'stripped bond' rules of Code Section 1286. In general,
Certificates will be subject to those rules in the hands of an Owner if (i) the
Company (or anyone else) retains rights to receive more than 100 basis points of
interest on any Mortgage Loans assigned to the Trust Fund (disregarding rights
to reasonable servicing compensation, but including rights to fees in excess of
reasonable compensation), or (ii) Certificates are issued in two or more Classes
representing rights to non-pro rata shares of interest and principal payments on
the Mortgage Loans.
 
                                       80

<PAGE>

     Notwithstanding the foregoing, a Certificate will not be subject to the
stripped bond rules in the hands of an Owner unless, viewing the Certificate as
a debt instrument issued by the Trust Fund, it would have original issue
discount. In general, a Certificate will not have original issue discount if it
pays interest at a fixed rate, or a single variable rate, monthly over its
entire life, is issued within one month of the first Distribution Date, and is
issued with no more than a de minimis amount of discount below its principal
amount. Discount is de minimis if the Certificate has an issue price (generally
the initial offering price at which a substantial amount of Certificates are
sold) that is not less than its principal amount by more than .25% times the
weighted average life of the Certificate (calculated by rounding down the number
of years to each principal payment to the next lowest number). For a more
detailed discussion of the definition of original issue discount, see 'REMIC
Certificates-- Income from Regular Certificates--Original Issue Discount' above.
 
TAXATION OF CERTIFICATES IF STRIPPED BOND RULES DO NOT APPLY
 
     If the stripped bond rules do not apply to a Certificate, then the Owner
will be required to include in income its share of the interest payments on the
Mortgage Loans held by the Trust Fund in accordance with its tax accounting
method. The Owner must also account for discount or premium on the Mortgage
Loans if it is considered to have purchased its interest in the Mortgage Loans
at a discount or premium. An Owner will be considered to have purchased an
interest in each Mortgage Loan at a price determined by allocating its purchase
price for the Certificate among the Mortgage Loans in proportion to their fair
market values at the time of purchase. It is likely that discount would be
considered to accrue and premium would be amortized, as described below, based
on an assumption that there will be no future prepayments of the Mortgage Loans,
and not based on a reasonable prepayment assumption.
 
     Discount.  The treatment of any discount relating to a Mortgage Loan will
depend on whether the discount is original issue discount or market discount.
Discount at which a Mortgage Loan is purchased will be original issue discount
only if the Mortgage Loan itself has original issue discount; the issuance of
Certificates is not considered a new issuance of a debt instrument that can give
rise to original issue discount. A Mortgage Loan generally will be considered to
have original issue discount if the greater of the amount of points charged to
the borrower, or the amount of any interest foregone during any initial teaser
period, exceeds .167% of the principal amount of the Mortgage Loan times the
number of full years to maturity (i.e., 5% of the principal amount for a 30 year
loan), or if interest is not paid at a fixed rate or a single variable rate
(disregarding any initial teaser rate) over the life of the Mortgage Loan. It is
not anticipated that the amount of original issue discount, if any, accruing on
the Mortgage Loans in each month will be significant relative to the interest
paid currently on the Mortgage Loans, but there can be no assurance that this
will be the case.
 
     In the case of a Mortgage Loan that is considered to have been purchased
with market discount that exceeds a de minimis amount (generally, .167% of the
principal amount times the number of whole years to maturity remaining at the
time of purchase), the Owner will be required to include in income in each month
the amount of such discount that has accrued through such month and not
previously been included in income, but limited to the amount of principal on
the Mortgage Loan that is received by the Trust Fund in that month. Because the
Mortgage Loans will provide for monthly principal payments, such discount may be
required to be included in income at a rate that is not significantly slower
than the rate at which such discount accrues. Any market discount that has not
previously been included in income will be recognized as ordinary income if and
when the Mortgage Loan is prepaid in full. For a more detailed discussion of the
market discount rules of the Code, see 'REMIC Certificates--Income from Regular
Certificates--Market Discount' above.
 
     In the case of market discount that does not exceed a de minimis amount,
the Owner generally will be required to allocate ratably the portion of such
discount that is allocable to a Mortgage Loan among the principal payments on
the Mortgage Loan and to include the discount in ordinary income as the related
principal payments are made (whether as scheduled payments or prepayments).
 
     Premium.  In the event that a Mortgage Loan is purchased at a premium, the
Owner may elect under Section 171 of the Code to amortize such premium under a
constant yield method based on the yield of the Mortgage Loan to such Owner,
provided that such Mortgage Loan was originated after September 27, 1985.
Premium allocable to a Mortgage Loan originated on or before that date should be
allocated among the principal
 
                                       81

<PAGE>

payments on the Mortgage Loan and allowed as an ordinary deduction as principal
payments are made (whether as scheduled payments or prepayments).
 
TAXATION OF CERTIFICATES IF STRIPPED BOND RULES APPLY
 
     If the stripped bond rules apply to a Certificate, income on the
Certificate will be treated as original issue discount and will be included in
income as it accrues under a constant yield method. More specifically, for
purposes of applying the original issue discount rules of the Code, the Owner
will likely be taxed as if it had purchased a newly issued, single debt
instrument providing for payments equal to the payments on the interests in the
Mortgage Loans allocable to the Certificate, and having original issue discount
equal to the excess of the sum of such payments over the Owner's purchase price
for the Certificate (which would be treated as the issue price). The amount of
original issue discount income accruing in any taxable year will be computed
generally as described above under 'REMIC Certificates--Income from Regular
Certificates--Original Issue Discount'. It is possible, however, that the
calculation must be made using as the Prepayment Assumption an assumption of
zero prepayments. If the calculation is made assuming no future prepayments,
then the Owner should be allowed to deduct currently any negative amount of
original issue discount produced by the accrual formula.
 
     Different approaches could be applied in calculating income under the
stripped bond rules. For example, a Certificate could be viewed as a collection
of separate debt instruments (one for each payment allocable to the Certificate)
rather than a single debt instrument. Also, in the case of an Interest-Only
Certificate, it could be argued that certain proposed regulations governing
contingent payment debt obligations apply. Owners should consult their own tax
advisors regarding the calculation of income under the stripped bond rules.
 
SALES OF CERTIFICATES
 
     A Certificateholder that sells a Certificate will recognize gain or loss
equal to the difference between the amount realized in the sale and its adjusted
tax basis in the Certificate. In general, such adjusted basis will equal the
Certificateholder's cost for the Certificate, increased by the amount of any
income previously reported with respect to the Certificate and decreased (but
not below zero) by the amount of any distributions received thereon, the amount
of any losses previously allowable to such Owner with respect to such
Certificate and any premium amortization thereon. Any such gain or loss would be
capital gain or loss if the Certificate was held as a capital asset, subject to
the potential treatment of gain as ordinary income to the extent of any accrued
but unrecognized market discount under the market discount rules of the Code, if
applicable.
 
FOREIGN INVESTORS
 
     Except as described in the following paragraph, an Owner that is not a U.S.
person (as defined under 'REMIC Certificates--Taxation of Foreign Investors'
above) and that is not subject to federal income tax as a result of any direct
or indirect connection to the United States in addition to its ownership of a
Certificate will not be subject to United States income or withholding tax in
respect of a Certificate (assuming the underlying Mortgage Loans were originated
after July 18, 1984), if the Owner provides an appropriate statement, signed
under penalties of perjury, identifying the Owner and stating, among other
things, that the Owner is not a U.S. person. If these conditions are not met, a
30% withholding tax will apply to interest (including original issue discount)
unless an income tax treaty reduces or eliminates such tax or unless the
interest is effectively connected with the conduct of a trade or business within
the United States by such Owner. Income effectively connected with a U.S. trade
or business will be subject to United States federal income tax at regular rates
then applicable to U.S. taxpayers (and in the case of a corporation, possibly
also the branch profits tax).
 
     In the event the Trust Fund acquires ownership of real property located in
the United States in connection with a default on a Mortgage Loan, then any
rental income from such property allocable to an Owner that is not a U.S. person
generally will be subject to a 30% withholding tax. In addition, any gain from
the disposition of such real property allocable to an Owner that is not a U.S.
person may be treated as income that is effectively connected with a U.S. trade
or business under special rules governing United States real property interests.
The Trust Fund may be required to withhold tax on gain realized upon a
disposition of such real property by the Trust Fund at a 35% rate.
 
                                       82

<PAGE>

REPORTING
 
     Tax information will be reported annually to the Internal Revenue Service
and to Holders of Certificates that are not excluded from the reporting
requirements.
 
BACKUP WITHHOLDING
 
     Distributions made on a Certificate and proceeds from the sale of a
Certificate to or through certain brokers may be subject to a 'backup'
withholding tax of 31% unless, in general, the Owner of the Certificate complies
with certain procedures or is a corporation or other person exempt from such
withholding. Any amounts so withheld from distributions on the Certificates
would be refunded by the Internal Revenue Service or allowed as a credit against
the Owner's federal income tax.
 
                              PLAN OF DISTRIBUTION
 
     Certificates are being offered hereby in series or in one or more classes
of a series through one or more of the various methods described below. The
Prospectus Supplement will describe the method of offering being utilized for
the related series or classes of Certificates and will state the public offering
or purchase price of each class of Certificates being offered thereby or the
method by which such price will be determined and the net proceeds to the
Company from the sale of each such class.
 
     The Certificates of each series or class will be offered through the
following methods from time to time, and offerings may be made concurrently
through more than one of these methods and an offering of a particular series or
of one or more classes of Certificates may be made through a combination of two
or more of these methods. Such methods are as follows:
 
          1. By negotiated firm commitment underwriting and public reoffering by
     underwriters;
 
          2. By placements by the Company with institutional investors through
     dealers or agents; and
 
          3. By direct placements by the Company with institutional investors.
 
     If underwriters are used in a sale of any Certificates, such Certificates
will be acquired by the underwriters for their own account and may be resold
from time to time in one or more transactions including negotiated transactions,
at fixed public offering prices or at varying prices to be determined at the
time of sale or at the time of commitment therefor. The managing underwriter or
underwriters with respect to the offer and sale of a particular series or class
of Certificates will be set forth on the cover of the Prospectus Supplement
relating to such series or class and the members of the underwriting syndicate,
if any, will be named in such Prospectus Supplement.
 
     In connection with the sale of the Certificates, underwriters may receive
compensation from the Company or from purchasers of the Certificates in the form
of discounts, concessions or commissions. Underwriters and dealers participating
in the distribution of the Certificates may be deemed to be underwriters in
connection with such Certificates, and any discounts or commissions received by
them from the Company and any profit on the resale of Certificates by them may
be deemed to be underwriting discounts and commissions under the Securities Act
of 1933, as amended (the 'Securities Act'). The Prospectus Supplement will
describe any such compensation paid by the Company.
 
     It is anticipated that the underwriting agreement pertaining to the sale of
any series or class of Certificates will provide that the obligations of the
underwriters will be subject to certain conditions precedent, that the
underwriters will be obligated to purchase all such Certificates if any are
purchased and that the Company will indemnify the underwriters against certain
civil liabilities, including liabilities under the Securities Act or will
contribute to payments required to be made in respect thereof.
 
     Purchasers of Certificates, including dealers, institutional investors and
sophisticated non-institutional investors, may, depending on the facts and
circumstances of such purchases, be deemed to be underwriters within the meaning
of the Securities Act, in connection with reoffers and sales by them of
Certificates. Holders of Certificates should consult with their legal advisors
in this regard prior to any such reoffer or sale.
 
                                       83

<PAGE>

     With respect to any series of Certificates offered other than through
underwriters, the Prospectus Supplement will contain information regarding the
nature of such offering and any agreements to be entered into between the
Company and purchasers of such Certificates.
 
                                USE OF PROCEEDS
 
     The net proceeds of sales of Certificates will be added to the Company's
general funds. Unless otherwise specified in the Prospectus Supplement, the
Company intends to use such proceeds for general corporate purposes, including
the acquisition of servicing rights, Mortgage Loans, Agency Securities and
Contracts.
 
                                 LEGAL MATTERS
 
     The legality of the Certificates offered hereby will be passed upon for the
Company by Cleary, Gottlieb, Steen & Hamilton, New York, New York. Certain
federal income tax matters will be passed upon for the Company by Cleary,
Gottlieb, Steen & Hamilton.
 
                             FINANCIAL INFORMATION
 
     A Trust Fund will be formed with respect to each series of Certificates. No
Trust Fund will have any assets or obligations prior to the issuance of the
related series of Certificates. No Trust Fund will engage in any activities
other than those described herein or in the Prospectus Supplement. Accordingly,
no financial statement with respect to any Trust Fund is included in this
Prospectus or will be included in the Prospectus Supplement.
 
                                       84

<PAGE>

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
    NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS SUPPLEMENT OR THE
PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT
BE RELIED UPON AS HAVING BEEN AUTHORIZED. THIS PROSPECTUS SUPPLEMENT AND THE
PROSPECTUS DO NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO
BUY ANY SECURITIES OTHER THAN THE SECURITIES DESCRIBED IN THIS PROSPECTUS
SUPPLEMENT OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY SUCH
SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION IS UNLAWFUL.
NEITHER THE DELIVERY OF THIS PROSPECTUS SUPPLEMENT OR THE PROSPECTUS NOR ANY
SALE MADE THEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT
THE INFORMATION CONTAINED HEREIN OR THEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT
TO THE DATE OF SUCH INFORMATION.
                               ------------------
 
                               TABLE OF CONTENTS
                             PROSPECTUS SUPPLEMENT
 
<TABLE>
<CAPTION>
                                                   PAGE
                                                  ------
<S>                                               <C>
Summary of Terms................................     S-3
Description of the Mortgage Pools and the
  Mortgaged Properties..........................    S-27
Description of the Certificates.................    S-28
GE Capital Mortgage Services, Inc...............    S-33
Delinquency and Foreclosure Experience of the
  Company.......................................    S-33
The Pooling and Servicing Agreement.............    S-35
Certain Federal Income Tax Consequences.........    S-40
ERISA Considerations............................    S-40
Legal Investment Matters........................    S-42
Plan of Distribution............................    S-43
Certificate Ratings.............................    S-43
Legal Matters...................................    S-44
Pool 1 Annex....................................    A1-1
Pool 2 Annex....................................    A2-1
Pool 3 Annex....................................    A3-1
Pool 4 Annex....................................    A4-1
Index of Certain Prospectus Supplement
  Definitions...................................     B-1
 
                       PROSPECTUS
Available Information...........................       2
Incorporation of Certain Documents by
  Reference.....................................       3
Reports of Certificateholders...................       3
Prospectus Summary..............................       6
Description of the Certificates.................      14
The Trust Fund..................................      19
Credit Support..................................      30
Yield, Maturity and Weighted Average Life
  Considerations................................      36
Servicing of the Mortgage Loans and Contracts...      38
The Pooling and Servicing Agreement.............      49
GE Capital Mortgage Services, Inc...............      56
The Guarantor...................................      57
Certain Legal Aspects of the Mortgage Loans and
  Contracts.....................................      57
The Mortgage Loans..............................      57
The Contracts...................................      64
Legal Investment Matters........................      67
ERISA Considerations............................      68
Certain Federal Income Tax Consequences.........      70
Plan of Distribution............................      83
Use of Proceeds.................................      84
Legal Matters...................................      84
Financial Information...........................      84
</TABLE>
 
                               ------------------
 
    UNTIL 90 DAYS AFTER THE DATE OF THIS PROSPECTUS SUPPLEMENT, ALL DEALERS
EFFECTING TRANSACTIONS IN THE CERTIFICATES OFFERED HEREBY, WHETHER OR NOT
PARTICIPATING IN THIS DISTRIBUTION, MAY BE REQUIRED TO DELIVER A PROSPECTUS
SUPPLEMENT AND PROSPECTUS TO WHICH IT RELATES. THIS IS IN ADDITION TO THE
OBLIGATION OF DEALERS TO DELIVER A PROSPECTUS SUPPLEMENT AND PROSPECTUS WHEN
ACTING AS UNDERWRITERS AND WITH RESPECT TO THEIR UNSOLD ALLOTMENTS OR
SUBSCRIPTIONS.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 

                                  $967,541,919
                                 (APPROXIMATE)
 
                              GE CAPITAL MORTGAGE
                                 SERVICES, INC.
                             (SELLER AND SERVICER)
 
                               REMIC MULTI-CLASS
                           PASS-THROUGH CERTIFICATES,
                                 SERIES 1998-12
 
                         ------------------------------
                             PROSPECTUS SUPPLEMENT
                                 JULY 24, 1998
                         ------------------------------

                              GREENWICH CAPITAL
                              -----------------

                           CREDIT SUISSE FIRST BOSTON

                                LEHMAN BROTHERS
 

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission