ADVANTA MORTGAGE LOAN TRUST 1997-4
8-K, 1997-12-08
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<PAGE>   1
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    Form 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

        Date of Report (Date of earliest event reported) December 4, 1997

                       Advanta Mortgage Loan Trust 1997-4

             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)

<TABLE>
<S>                                  <C>                   <C>
- ----------------------------         ------------          --------------------
          New York                    333-37107            Application Pending
(State or Other Jurisdiction         (Commission             (I.R.S. Employer 
     of Incorporation)               File Number)           Identification No.)

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

c/o Advanta Mortgage Conduit                                       92127
       Services, Inc.                                            (Zip Code)
 Attention: Milton Riseman
 16875 West Bernardo Drive
   San Diego, California
   (Address of Principal
     Executive Offices)
</TABLE>

        Registrant's telephone number, including area code (619) 674-1800
                                                           --------------

- --------------------------------------------------------------------------------
          (Former name or former address, if changed since last report)

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

<PAGE>   2


         Item 5.  Other Events

              In connection with the offering of Advanta Mortgage Loan Trust
1997-4 Mortgage Loan Asset-Backed Certificates, Series 1997-4, described in a
Prospectus Supplement dated as of December 4, 1997, certain "Computational
Materials" within the meanings of the May 20, 1994 Kidder, Peabody No-Action
Letter and the February 17, 1995 Public Securities Association No-Action Letter
were furnished to certain prospective investors (the "Related Computational
Materials").

         Item 7.  Financial Statements, Pro Forma Financial
                  Information and Exhibits.

         (a)  Not applicable

         (b)  Not applicable

         (c)  Exhibit 99.1. Related Computational Materials (as
              defined in Item 5 above).


<PAGE>   3


                                   SIGNATURES

                  Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf by
the undersigned hereunto duly authorized.

                                    ADVANTA MORTGAGE LOAN TRUST 1997-4

                                    By: Advanta Mortgage Conduit Services,
                                        Inc., as Sponsor

                                        By: /s/ Mark T. Dunsheath
                                           ------------------------
                                           Name:  Mark T. Dunsheath
                                           Title: Vice President

Dated:  December 5, 1997


<PAGE>   4


                                  EXHIBIT INDEX

<TABLE>
<CAPTION>
EXHIBIT NO.                  DESCRIPTION                                 PAGE NO.
- -----------                  -----------                                 --------
<S>                          <C>                                         <C>
99.1                         Related Computational                         5
                             Materials (as defined
                             in Item 5 above).
</TABLE>



<PAGE>   1
                                                                    EXHIBIT 99.1

                                LEHMAN BROTHERS

                               DERIVED INFORMATION

                     $900,000,000 Certificates (Approximate)

                       ADVANTA MORTGAGE LOAN TRUST 1997-4

                ADVANTA Mortgage Conduit Services, Inc. (Sponsor)

                  ADVANTA Mortgage Corp. USA (Master Servicer)





- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).


<PAGE>   2

2
LEHMAN BROTHERS

SECURITIES OFFERED

GROUP I (FIXED RATE HELS) - TO MATURITY

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                     APPROX.     ESTIMATED      EST. PRIN.     EXPECTED     STATED      EXPECTED
                 APPROX.      CLASS                 EXPECTED     WAL/MDUR      PMT. WINDOW      FINAL       FINAL        RATINGS
  SECURITIES     SIZE ($)      (%)     BENCHMARK      PRICE        (YRS)          (MOS.)       MATURITY    MATURITY    (MDY'S/S&P)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>           <C>      <C>          <C>          <C>           <C>             <C>         <C>          <C>
CLASS A-1  (1)  146,039,000   29.21    1 mo LIBOR    100.000%      0.85          1 - 18          6/25/99   8/25/10       Aaa/AAA
CLASS A-2  (1)   91,159,000   18.23      2 Yr Tsy    100.000%    2.00/1.82      18 - 30          6/25/00   9/25/12       Aaa/AAA
CLASS A-3  (1)   33,579,000    6.72         Curve    100.000%    2.76/2.45      30 - 36         12/25/00   8/25/14       Aaa/AAA
CLASS A-4  (1)   59,837,000   11.97         Curve    100.000%    3.90/3.33      36 - 59         11/25/02   3/25/22       Aaa/AAA
CLASS A-5  (1)   15,601,000    3.12         Curve    100.000%    5.40/4.39      59 - 71         11/25/03   3/25/24       Aaa/AAA
CLASS A-6  (1)   41,285,000    8.26     10 Yr Tsy    100.000%    9.99/6.82     71 - 198          6/25/14   1/25/29       Aaa/AAA
CLASS A-7  (1)   50,000,000   10.00         Curve    100.000%    6.61/5.13     37 - 177          9/25/12   1/25/29       Aaa/AAA
CLASS M-1  (1)   17,500,000    3.50         Curve    100.000%    6.17/4.68     37 - 168         12/25/11   1/25/29       Aa2/AA
CLASS M-2  (1)   30,000,000    6.00         Curve    100.000%    6.10/4.61     37 - 158          2/25/11   1/25/29        A2/A
CLASS B-1  (1)   15,000,000    3.00         Curve    100.000%    5.87/4.48     37 - 131         11/25/08   1/25/29      Baa2/BBB
CLASS A-IO (3)  (50,000,000)     NA            NA          NA       NA               NA          6/25/00   6/25/00      Aaa/AAAr
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


GROUP I (FIXED RATE HELS) - TO CALL

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                      APPROX.     ESTIMATED      EST. PRIN.    EXPECTED     STATED       EXPECTED
                 APPROX.      CLASS                  EXPECTED     WAL/MDUR      PMT. WINDOW      FINAL       FINAL       RATINGS
  SECURITIES     SIZE ($)      (%)      BENCHMARK      PRICE        (YRS)          (MOS.)      MATURITY    MATURITY    (MDY'S/S&P)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>           <C>      <C>          <C>          <C>           <C>             <C>         <C>          <C>
CLASS A-6  (1)   41,285,000    8.26      10 Yr Tsy    100.000%    7.67/5.74     71 - 98         2/25/06     1/25/29      Aaa/AAA
CLASS A-7  (1)   50,000,000   10.00          Curve    100.000%    6.43/5.03     37 - 98         2/25/06     1/25/29      Aaa/AAA
CLASS M-1  (1)   17,500,000    3.50          Curve    100.000%    5.61/4.42     37 - 98         2/25/06     1/25/29       Aa2/AA
CLASS M-2  (1)   30,000,000    6.00          Curve    100.000%    5.61/4.38     37 - 98         2/25/06     1/25/29        A2/A
CLASS B-1  (1)   15,000,000    3.00          Curve    100.000%    5.61/4.35     37 - 98         2/25/06     1/25/29      Baa2/BBB
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


GROUP II (ARMS) - TO CALL

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                                      APPROX.     ESTIMATED      EST. PRIN.    EXPECTED     STATED       EXPECTED
                  APPROX.     CLASS                  EXPECTED        WAL        PMT. WINDOW      FINAL       FINAL       RATINGS
  SECURITIES      SIZE ($)     (%)      BENCHMARK      PRICE        (YRS)          (MOS.)      MATURITY    MATURITY    (MDY'S/S&P)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>             <C>           <C>      <C>          <C>          <C>           <C>             <C>         <C>          <C>
CLASS A-8  (2)   98,000,000   24.50     1 mo LIBOR    100.000%      1.40         1 - 41         5/25/01     2/25/24      Aaa/AAA
CLASS A-9  (2)  302,000,000   75.50     1 mo LIBOR    100.000%      3.50         1 - 98         2/25/06     1/25/29      Aaa/AAA
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) Prepayments are sized at 115% of the Prepayment Assumption. A 100%
    Prepayment Assumption start at 3% CPR in month one, increase by 1.55% each
    month to 20% CPR by month 12, and remain at 20% CPR thereafter.

(2) Prepayments are sized at 25% CPR.

(3) Class A-IO will be an interest only class with a notional balance equal to
    the principal balance of the Class A-7 NAS Certificates. The Class A-IO will
    have a coupon of 5% and a final maturity of 30 months. The Class A-IO will
    be solely underwritten by Lehman Brothers.

- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).


<PAGE>   3

3
LEHMAN BROTHERS
LEHMAN BROTHERS.









- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).


<PAGE>   4

4
LEHMAN BROTHERS

                              PROJECTED PERFORMANCE
                      UNDER VARYING PREPAYMENT ASSUMPTIONS

GROUP I (FIXED RATE HELS) - TO MATURITY

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>           <C>          <C>           <C>           <C>           <C>         <C>
% of Prepayment Assumption                50.0%        75.0%        100.0%        115.0%        150.0%        200.0%      250.0%
Implied Group I Seasoned CPR              10.0%        15.0%         20.0%        23.0%         30.0%         40.0%       50.0%
Group II CPR                              10.0%        15.0%         20.0%        25.0%         30.0%         40.0%       50.0%

Class A-1
- ---------
Avg. Life (yrs)                           1.46          1.11         0.93          0.85          0.73          0.62        0.54
Window (begin-end) (mths)                1 - 34        1 - 25       1 - 20        1 - 18        1 - 15        1 - 12      1 - 10
Expected Final Maturity                 10/25/00      1/25/00       8/25/99      6/25/99       3/25/99       12/25/98    10/25/98

Class A-2
- ---------
Avg. Life (yrs)                           4.03          2.87         2.25          2.00          1.60          1.27        1.07
Mod Duration (yrs)                        3.43          2.53         2.03          1.82          1.48          1.18        1.01
Window (begin-end) (mths)                34 - 64      25 - 45       20 - 34      18 - 30       15 - 24       12 - 18     10 - 15
Expected Final Maturity                  4/25/03      9/25/01      10/25/00      6/25/00       12/25/99      6/25/99     3/25/99
Yield @ 100.000%                          6.59          6.55         6.50          6.48          6.42          6.35        6.28

Class A-3
- ---------
Avg. Life (yrs)                           6.04          4.16         3.15          2.76          2.17          1.68        1.37
Mod Duration (yrs)                        4.83          3.54         2.76          2.45          1.97          1.54        1.27
Window (begin-end) (mths)                64 - 83      45 - 56       34 - 42      30 - 36       24 - 28       18 - 21     15 - 17
Expected Final Maturity                 11/25/04      8/25/02       6/25/01      12/25/00      4/25/00       9/25/99     5/25/99
Yield @ 100.000%                          6.65          6.62         6.58          6.56          6.52          6.46        6.39

Class A-4
- ---------
Avg. Life (yrs)                           9.95          6.40         4.56          3.90          2.73          2.06        1.66
Mod Duration (yrs)                        7.01          5.02         3.81          3.33          2.42          1.87        1.52
Window (begin-end) (mths)               83 - 155      56 - 111      42 - 71      36 - 59       28 - 43       21 - 28     17 - 22
Expected Final Maturity                 11/25/10      3/25/07      11/25/03      11/25/02      7/25/01       4/25/00     10/25/99
Yield @ 100.000%                          6.77          6.75         6.72          6.70          6.65          6.60        6.54

Class A-5
- ---------
Avg. Life (yrs)                           13.81        10.15         6.52          5.40          3.85          2.42        1.92
Mod Duration (yrs)                        8.71          7.13         5.12          4.39          3.29          2.17        1.75
Window (begin-end) (mths)               155 - 176    111 - 133      71 - 94      59 - 71       43 - 49       28 - 30     22 - 24
Expected Final Maturity                  8/25/12      1/25/09      10/25/05      11/25/03      1/25/02       6/25/00     12/25/99
Yield @ 100.000%                          6.85          6.83         6.81          6.79          6.76          6.69        6.64

- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   5

5
LEHMAN BROTHERS

                              PROJECTED PERFORMANCE
                      UNDER VARYING PREPAYMENT ASSUMPTIONS

GROUP I (FIXED RATE HELS) - TO MATURITY

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>           <C>          <C>           <C>           <C>           <C>         <C>
% of Prepayment Assumption                50.0%        75.0%        100.0%        115.0%        150.0%        200.0%      250.0%
Implied Group I Seasoned CPR              10.0%        15.0%         20.0%        23.0%         30.0%         40.0%       50.0%
Group II CPR                              10.0%        15.0%         20.0%        25.0%         30.0%         40.0%       50.0%

Class A-6
- ---------
Avg. Life (yrs)                           18.06        14.63         11.78         9.99          6.42          2.76        2.18
Mod Duration (yrs)                        9.81          8.79         7.68          6.82          4.87          2.44        1.96
Window (begin-end) (mths)               176 - 329    133 - 274     94 - 222      71 - 198      49 - 165      30 - 36     24 - 28
Expected Final Maturity                  5/25/25      10/25/20      6/25/16      6/25/14       9/25/11       12/25/00    4/25/00
Yield @ 100.000%                          7.12          7.11         7.10          7.10          7.07          6.97        6.93

Class A-7
- ---------
Avg. Life (yrs)                           7.80          7.16         6.76          6.61          6.47          5.80        2.93
Mod Duration (yrs)                        5.79          5.44         5.21          5.13          5.04          4.63        2.56
Window (begin-end) (mths)               37 - 320      37 - 263     37 - 212      37 - 177      42 - 163      36 - 122    28 - 94
Expected Final Maturity                  8/25/24      11/25/19      8/25/15      9/25/12       7/25/11       2/25/08     10/25/05
Yield @ 100.000%                          6.72          6.71         6.71          6.71          6.71          6.70        6.62

Class M-1
- ---------
Avg. Life (yrs)                           11.45         8.75         6.97          6.17          4.99          4.44        5.49
Mod Duration (yrs)                        7.35          6.10         5.14          4.68          3.99          3.67        4.41
Window (begin-end) (mths)               69 - 278      50 - 217     39 - 177      37 - 168      40 - 131      45 - 96     55 - 82
Expected Final Maturity                  2/25/21      1/25/16       9/25/12      12/25/11      11/25/08      12/25/05    10/25/04
Yield @ 100.000%                          7.14          7.13         7.11          7.10          7.09          7.08        7.10

Class M-2
- ---------
Avg. Life (yrs)                           11.33         8.66         6.91          6.10          4.88          4.12        4.10
Mod Duration (yrs)                        7.22          6.00         5.07          4.61          3.89          3.42        3.43
Window (begin-end) (mths)               69 - 262      50 - 205     39 - 177      37 - 158      38 - 123      40 - 91     42 - 69
Expected Final Maturity                 10/25/19      1/25/15       9/25/12      2/25/11       3/25/08       7/25/05     9/25/03
Yield @ 100.000%                          7.40          7.38         7.37          7.36          7.34          7.32        7.32

Class B-1
- ---------
Avg. Life (yrs)                           10.99         8.48         6.66          5.87          4.67          3.83        3.53
Mod Duration (yrs)                        7.04          5.87         4.93          4.48          3.75          3.20        3.00
Window (begin-end) (mths)               69 - 217      50 - 177     39 - 148      37 - 131      37 - 101      38 - 74     39 - 57
Expected Final Maturity                  1/25/16      9/25/12       4/25/10      11/25/08      5/25/06       2/25/04     9/25/02
Yield @ 100.000%                          7.65          7.64         7.62          7.61          7.59          7.56        7.55

- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   6

6
LEHMAN BROTHERS

                              PROJECTED PERFORMANCE
                      UNDER VARYING PREPAYMENT ASSUMPTIONS

GROUP I (FIXED RATE HELS) - TO 10% CLEAN-UP CALL

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>           <C>          <C>           <C>           <C>           <C>         <C>
% of Prepayment Assumption                50.0%         75.0%        100.0%        115.0%        150.0%        200.0%      250.0%
Implied Group I Seasoned CPR              10.0%         15.0%         20.0%        23.0%         30.0%         40.0%       50.0%
Group II CPR                              10.0%         15.0%         20.0%        25.0%         30.0%         40.0%       50.0%

Class A-6
- ---------
Avg. Life (yrs)                           15.80         12.46         9.52          7.67          5.36          2.76        2.18
Mod Duration (yrs)                         9.26         8.05          6.73          5.74          4.32          2.44        1.96
Window (begin-end) (mths)               176 - 197     133 - 152     94 - 117      71 - 98       49 - 77       30 - 36     24 - 28
Expected Final Maturity                  5/25/14       8/25/10       9/25/07      2/25/06       5/25/04       12/25/00    4/25/00
Yield @ 100.000%                           7.11         7.11          7.09          7.08          7.06          6.97        6.93

Class A-7
- ---------
Avg. Life (yrs)                            7.80         7.15          6.69          6.43          5.73          4.58        2.74
Mod Duration (yrs)                         5.79         5.43          5.18          5.03          4.61          3.83        2.43
Window (begin-end) (mths)                37 - 197     37 - 152      37 - 117      37 - 98       42 - 77       36 - 56     28 - 42
Expected Final Maturity                  5/25/14       8/25/10       9/25/07      2/25/06       5/25/04       8/25/02     6/25/01
Yield @ 100.000%                           6.72         6.71          6.71          6.71          6.70          6.68        6.61

Class M-1
- ---------
Avg. Life (yrs)                           11.01         8.31          6.46          5.61          4.58          4.12        3.52
Mod Duration (yrs)                         7.24         5.94          4.93          4.42          3.76          3.47        3.02
Window (begin-end) (mths)                69 - 197     50 - 152      39 - 117      37 - 98       40 - 77       45 - 56     42 - 42
Expected Final Maturity                  5/25/14       8/25/10       9/25/07      2/25/06       5/25/04       8/25/02     6/25/01
Yield @ 100.000%                           7.14         7.13          7.11          7.10          7.08          7.07        7.05

Class M-2
- ---------
Avg. Life (yrs)                           11.01         8.31          6.46          5.61          4.52          3.85        3.52
Mod Duration (yrs)                         7.14         5.88          4.88          4.38          3.69          3.25        3.01
Window (begin-end) (mths)                69 - 197     50 - 152      39 - 117      37 - 98       38 - 77       40 - 56     42 - 42
Expected Final Maturity                  5/25/14       8/25/10       9/25/07      2/25/06       5/25/04       8/25/02     6/25/01
Yield @ 100.000%                           7.39         7.38          7.36          7.35          7.33          7.31        7.30

Class B
- -------
Avg. Life (yrs)                           10.93         8.30          6.46          5.61          4.49          3.69        3.40
Mod Duration (yrs)                         7.02         5.81          4.84          4.35          3.64          3.11        2.91
Window (begin-end) (mths)                69 - 197     50 - 152      39 - 117      37 - 98       37 - 77       38 - 56     39 - 42
Expected Final Maturity                  5/25/14       8/25/10       9/25/07      2/25/06       5/25/04       8/25/02     6/25/01
Yield @ 100.000%                           7.65         7.63          7.62          7.60          7.58          7.56        7.55

- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   7

7
LEHMAN BROTHERS

                              PROJECTED PERFORMANCE
                      UNDER VARYING PREPAYMENT ASSUMPTIONS

GROUP II (ARMS)

<TABLE>
<CAPTION>
TO 10% CLEANUP CALL
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                     <C>           <C>          <C>           <C>           <C>         <C>          <C>
Group II CPR                             10.0%        15.0%         20.0%         25.0%        30.0%         40.0%       50.0%
% Group I Prepay Assumption              50.0%        75.0%        100.0%        115.0%        150.0%       200.0%       250.0%

Class A-8
- ---------
Avg. Life (yrs)                          3.53          2.37         1.77          1.40          1.15         0.83         0.64
Window (begin-end) (mths)               1 - 106       1 - 71       1 - 52        1 - 41        1 - 33       1 - 23       1 - 17
Expected Final Maturity                10/25/06      11/25/03      4/25/02       5/25/01      9/25/00      11/25/99     5/25/99

Class A-9
- ---------
Avg. Life (yrs)                          8.25          5.83         4.38          3.50          2.83         2.01         1.49
Window (begin-end) (mths)               1 - 197      1 - 152       1 - 117       1 - 98        1 - 77       1 - 56       1 - 42
Expected Final Maturity                 5/25/14      8/25/10       9/25/07       2/25/06      5/25/04       8/25/02     6/25/01

- ----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   8

8
LEHMAN BROTHERS

GROUP I - COLLATERAL SUMMARY

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------------------------------------------
                                                  INITIAL GROUP I LOANS
- ---------------------------------------------------------------------------------------------------------------------------
<S>                                                             <C>                            <C>
NUMBER OF LOANS                                                                     5,264
TOTAL OUTSTANDING PRINCIPAL BALANCE                                       $304,022,482.01
       BALLOON (% OF TOTAL)                                                        18.46%
       LEVEL PAY (% OF TOTAL)                                                      81.54%

AVERAGE PRINCIPAL BALANCE                                                      $57,755.03      $568.91 - $559,727.44
WEIGHTED AVERAGE LOAN RATE                                                         10.72%      7.05% - 18.99%
WEIGHTED AVERAGE ORIGINAL TERM (MOS.)                                                 250      36 - 360
WEIGHTED AVERAGE REMAINING TERM (MOS.)                                                249      4 - 360
WEIGHTED AVERAGE CLTV                                                              74.46%      8.77% - 95.00%
WEIGHTED AVERAGE SECOND MORTGAGE RATIO                                             35.49%      (for second liens only)

LIEN POSITION (FIRST/SECOND)                                                 92.15%/7.85%
PROPERTY TYPE
        SINGLE FAMILY/PUD                                                          87.16%
        CONDO/TOWNHOUSE/ROWHOUSE                                                    4.05%
        TWO TO FOUR FAMILY                                                          4.16%
        PREFABRICATED SINGLE FAMILY                                                 4.15%
        OTHER                                                                       0.49%

OCCUPANCY STATUS
        OWNER OCCUPIED                                                             93.85%
        INVESTOR OWNER                                                              6.15%

GEOGRAPHIC DISTRIBUTION

other states account individually for less than                        MI          11.49%
5% of Group I pool balance                                             CA           8.15%
                                                                       PA           6.45%
                                                                       NY           5.28%

ORIGINATION YEAR                                                     1997          99.68%
                                                                     1996           0.13%
                                                                1986-1990           0.19%

CREDIT CLASS                                                         A/A-          66.12%      C              12.12%

                                                                        B          17.41%      D               4.34%

PREPAYMENT PENALTY                                                    Yes          72.18%

                                                                       No          27.82%

- ---------------------------------------------------------------------------------------------------------------------------
</TABLE>


- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   9

9
LEHMAN BROTHERS

GROUP I - COLLATERAL SUMMARY (CONTINUED)

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
                                                                                       % OF TOTAL
   STATE                          NUMBER OF LOANS     PRINCIPAL BALANCE ($)        PRINCIPAL BALANCE
- ------------------------------------------------------------------------------------------------------------
<S>                               <C>                 <C>                          <C>
MI                                      747                34,941,756.92                    11.49
CA                                      266                24,789,999.68                     8.15
PA                                      387                19,616,745.67                     6.45
NY                                      219                16,040,622.81                     5.28
FL                                      268                15,051,916.92                     4.95
OH                                      278                14,278,555.66                     4.70
IL                                      191                11,451,617.33                     3.77
NC                                      197                10,562,190.61                     3.47
MD                                      140                10,483,267.40                     3.45
NJ                                      142                10,050,883.68                     3.31
IN                                      211                 9,670,873.32                     3.18
WA                                      136                 8,870,127.38                     2.92
VA                                      156                 8,838,188.76                     2.91
CO                                      102                 7,488,306.98                     2.46
MO                                      154                 7,451,555.29                     2.45
SC                                      149                 7,357,360.70                     2.42
GA                                      117                 6,784,808.94                     2.23
AZ                                      131                 6,333,810.24                     2.08
KS                                      105                 6,001,429.97                     1.97
OR                                       73                 5,525,551.10                     1.82
IA                                      109                 5,153,531.68                     1.70
MA                                       64                 4,921,799.91                     1.62
LA                                       89                 4,474,948.86                     1.47
UT                                       59                 3,614,394.96                     1.19
OK                                       74                 3,585,256.18                     1.18
MN                                       56                 3,570,489.93                     1.17
WV                                       68                 3,483,145.97                     1.15
TN                                       52                 3,112,574.72                     1.02
DE                                       36                 2,904,750.49                     0.96
CT                                       38                 2,813,886.41                     0.93
WI                                       47                 2,750,158.15                     0.90
HI                                       13                 2,342,906.03                     0.77
TX                                       36                 2,150,595.00                     0.71
NE                                       43                 1,909,857.78                     0.63
MS                                       43                 1,717,588.50                     0.56
ID                                       30                 1,615,573.10                     0.53
AL                                       41                 1,555,227.51                     0.51
AR                                       36                 1,526,325.00                     0.50
- ------------------------------------------------------------------------------------------------------------
</TABLE>


- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   10

10
LEHMAN BROTHERS

GROUP I - COLLATERAL SUMMARY (CONTINUED)

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
                                                                                       % OF TOTAL
   STATE (CONTINUED)              NUMBER OF LOANS     PRINCIPAL BALANCE ($)        PRINCIPAL BALANCE
- ------------------------------------------------------------------------------------------------------------
<S>                               <C>                 <C>                          <C>
RI                                       24                1,188,331.22                     0.39
NV                                       19                1,184,118.39                     0.39
NM                                       24                1,080,238.30                     0.36
ME                                       19                1,076,356.97                     0.35
KY                                       16                  989,810.38                     0.33
DC                                       11                  970,525.66                     0.32
MT                                       13                  620,255.06                     0.20
WY                                        9                  574,813.56                     0.19
VT                                        9                  574,065.38                     0.19
NH                                        4                  443,636.18                     0.15
SD                                       10                  407,407.40                     0.13
AK                                        2                  107,593.97                     0.04
ND                                        1                   12,750.00                     0.00

Total:                                5,264              304,022,482.01                   100.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
                                                                                       % OF TOTAL
   COMBINED LTV (%)               NUMBER OF LOANS     PRINCIPAL BALANCE ($)        PRINCIPAL BALANCE
- ------------------------------------------------------------------------------------------------------------
<S>                               <C>                 <C>                          <C>
5.001- 10.000                             2                   36,320.54                     0.01
10.001- 15.000                            7                   94,200.54                     0.03
15.001- 20.000                           26                  476,522.67                     0.16
20.001- 25.000                           42                1,032,509.41                     0.34
25.001- 30.000                           51                1,407,643.97                     0.46
30.001- 35.000                           84                2,658,740.46                     0.87
35.001- 40.000                           98                3,371,356.13                     1.11
40.001- 45.000                          118                4,661,502.23                     1.53
45.001- 50.000                          185                7,264,607.80                     2.39
50.001- 55.000                          151                6,558,684.12                     2.16
55.001- 60.000                          222               10,270,075.53                     3.38
60.001- 65.000                          339               17,802,074.42                     5.86
65.001- 70.000                          445               25,245,590.32                     8.30
70.001- 75.000                          746               46,164,247.47                    15.18
75.001- 80.000                        1,147               74,267,118.27                    24.43
80.001- 85.000                        1,463               94,200,799.73                    30.98
85.001- 90.000                          119                7,371,002.63                     2.42
90.001- 95.000                           19                1,139,485.77                     0.37

Total:                                5,264              304,022,482.01                   100.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>


- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   11

11
LEHMAN BROTHERS







- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   12

12
LEHMAN BROTHERS

GROUP I - COLLATERAL SUMMARY (CONTINUED)

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
                                                                                       % OF TOTAL
   LTV (%)                        NUMBER OF LOANS     PRINCIPAL BALANCE ($)        PRINCIPAL BALANCE
- ------------------------------------------------------------------------------------------------------------
<S>                               <C>                 <C>                          <C>
0.001-  5.000                             1                    8,864.45                    0.00
5.001- 10.000                            39                  680,485.61                    0.22
10.001- 15.000                          150                3,377,655.78                    1.11
15.001- 20.000                          180                4,850,452.83                    1.60
20.001- 25.000                          196                5,729,834.67                    1.88
25.001- 30.000                          143                4,729,474.83                    1.56
30.001- 35.000                          141                4,957,304.06                    1.63
35.001- 40.000                          137                5,225,018.76                    1.72
40.001- 45.000                          127                5,301,593.34                    1.74
45.001- 50.000                          192                7,928,771.52                    2.61
50.001- 55.000                          141                6,205,953.56                    2.04
55.001- 60.000                          210                9,775,250.71                    3.22
60.001- 65.000                          321               17,343,351.56                    5.70
65.001- 70.000                          407               23,933,085.81                    7.87
70.001- 75.000                          663               43,112,979.46                   14.18
75.001- 80.000                          975               68,359,425.33                   22.48
80.001- 85.000                        1,133               84,812,081.26                   27.90
85.001- 90.000                           93                6,695,078.94                    2.20
90.001- 95.000                           15                  995,819.53                    0.33

Total:                                5,264              304,022,482.01                  100.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
JR. LIEN RATIO                                                                         % OF TOTAL
   (JR. ONLY) (%)                 NUMBER OF LOANS     PRINCIPAL BALANCE ($)        PRINCIPAL BALANCE
- ------------------------------------------------------------------------------------------------------------
<S>                               <C>                 <C>                          <C>
0.001- 10.000                            11                  197,977.91                    0.83
10.001- 20.000                          180                4,084,835.41                   17.11
20.001- 30.000                          247                6,799,589.23                   28.47
30.001- 40.000                          134                4,419,985.50                   18.51
40.001- 50.000                           83                4,211,695.45                   17.64
50.001- 60.000                           40                1,985,618.00                    8.31
60.001- 70.000                           17                  648,742.75                    2.72
70.001- 80.000                           16                  694,200.31                    2.91
80.001- 90.000                           11                  757,506.57                    3.17
90.001-100.000                            2                   80,357.50                    0.34

Total:                                  741               23,880,508.63                  100.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>

- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   13

13
LEHMAN BROTHERS

GROUP I - COLLATERAL SUMMARY (CONTINUED)

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
                                                                                       % OF TOTAL
   LOAN RATE (%)                  NUMBER OF LOANS     PRINCIPAL BALANCE ($)        PRINCIPAL BALANCE
- ------------------------------------------------------------------------------------------------------------
<S>                               <C>                 <C>                          <C>
7.001- 8.000                             27                3,305,514.24                     1.09
8.001- 9.000                            580               42,123,792.68                    13.86
9.001-10.000                          1,192               86,239,084.80                    28.37
10.001-11.000                         1,007               62,587,710.15                    20.59
11.001-12.000                           833               44,809,656.63                    14.74
12.001-13.000                         1,018               41,915,115.38                    13.79
13.001-14.000                           399               15,538,250.02                     5.11
14.001-15.000                           159                5,654,542.91                     1.86
15.001-16.000                            35                1,434,663.27                     0.47
16.001-17.000                            11                  346,333.54                     0.11
18.001-19.000                             3                   67,818.39                     0.02

Total:                                5,264              304,022,482.01                   100.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------
REMAINING TERM TO MATURITY                                                             % OF TOTAL
   (MONTHS)                       NUMBER OF LOANS     PRINCIPAL BALANCE ($)        PRINCIPAL BALANCE
- ------------------------------------------------------------------------------------------------------------
<S>                               <C>                 <C>                          <C>
1-12                                      1                      568.91                     0.00
25- 36                                    2                  128,961.79                     0.04
37- 48                                    4                   70,925.43                     0.02
49- 60                                   39                  805,623.37                     0.26
61- 72                                   15                  429,432.51                     0.14
73- 84                                   49                1,362,094.76                     0.45
85- 96                                   26                  960,897.01                     0.32
97-108                                    5                  295,353.87                     0.10
109-120                                 325               10,661,214.51                     3.51
121-132                                   2                   75,030.58                     0.02
133-144                                  44                1,940,125.88                     0.64
145-156                                   1                   52,558.18                     0.02
157-168                                   1                  204,000.00                     0.07
169-180                               2,434              122,816,539.13                    40.40
181-192                                   5                  159,294.73                     0.05
193-204                                  10                  686,963.97                     0.23
205-216                                   2                  219,000.00                     0.07
217-228                                 101                7,077,389.75                     2.33
229-240                                 809               50,974,899.35                    16.77
241-252                                   1                   45,000.00                     0.01
289-300                                  12                1,243,300.78                     0.41
349-360                               1,376              103,813,307.50                    34.15

Total:                                5,264              304,022,482.01                   100.00
- ------------------------------------------------------------------------------------------------------------
</TABLE>

- --------------------------------------------------------------------------------
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   14
                                                                              14

LEHMAN BROTHERS

GROUP II - COLLATERAL SUMMARY (CONTINUED)


                             INITIAL GROUP II LOANS

<TABLE>
<S>                                                              <C>       <C>                  <C>
 NUMBER OF LOANS                                                                     3,296
 TOTAL OUTSTANDING PRINCIPAL BALANCE                                       $294,570,732.03
       BALLOON (% OF TOTAL)                                                          0.17%
       LEVEL PAY (% OF TOTAL)                                                       99.83%
 AVERAGE PRINCIPAL BALANCE                                                      $89,372.19      $1,934.43 - $1,387,500.00
 WEIGHTED AVERAGE LOAN RATE                                                         10.54%      6.74% - 15.99%
 WEIGHTED AVERAGE MARGIN                                                             6.28%      2.09% - 10.25%
 WEIGHTED AVERAGE ORIGINAL TERM (MOS.)                                                 357      60 - 360
 WEIGHTED AVERAGE REMAINING TERM (MOS.)                                                355      16 - 360
 WEIGHTED AVERAGE LIFE CAP                                                          17.11%      10.48% - 30.50%
 WEIGHTED AVERAGE PERIODIC CAP                                                       1.23%      1.00% - 2.00%
 WEIGHTED AVERAGE FLOOR                                                             10.18%      2.55% - 15.99%
 INDEX                                                                       6 month LIBOR      93.61%
                                                                                  1 Yr CMT      5.35%
                                                                                      COFI      1.04%
 WEIGHTED AVERAGE CLTV                                                              77.70%      16.75% - 95.00%
 LIEN POSITION (FIRST/SECOND)                                               99.00% / 1.00%
 PROPERTY TYPE
         SINGLE FAMILY/PUD                                                          88.03%
         CONDO/TOWNHOUSE/ROWHOUSE                                                    6.06%
         TWO TO FOUR FAMILY                                                          3.54%
         PREFABRICATED SINGLE FAMILY                                                 1.88%
         OTHER                                                                       0.49%

 OCCUPANCY STATUS
         OWNER OCCUPIED / INVESTOR OWNED                                    95.69% / 4.31%

 GEOGRAPHIC DISTRIBUTION
 other states account individually for less than                   MI               18.61%
 5% of Group II principal balance                                  CA               12.37%
                                                                   NJ                7.11%
                                                                   IL                6.81%
 ORIGINATION YEAR                                                1997               98.18%      1994           0.14%
                                                                 1996                0.56%      1984-88        1.12%
 CREDIT CLASS                                                    A/A-               52.58%      C             16.34%
                                                                    B               21.83%      D              8.66%
                                                                                                Unknown        0.59%
 PREPAYMENT PENALTY                                               Yes               65.01%
                                                                   No               34.99%
</TABLE>
                                                                        
THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).
<PAGE>   15
                                                                              15

LEHMAN BROTHERS

GROUP II - COLLATERAL SUMMARY (CONTINUED)

                             INITIAL GROUP II LOANS

<TABLE>
<CAPTION>
         LOAN TYPE             % BY PRINCIPAL      WTD. AVG.     WTD. AVG.     PERIODIC CAP     PERIODIC CAP      WTD. AVG.
                                  BALANCE          LOAN RATE       MARGIN       (1ST RESET)     (SUBS. RESET)     LIFE CAP
 --------------------------- ------------------- -------------- ------------- ---------------- ---------------- --------------
<S>                               <C>              <C>           <C>            <C>              <C>             <C>   
                 6 mo LIBOR          13.54%           10.47%        6.52%          1.28%            1.28%           17.01%
                   1 Yr CMT           3.82%            9.66%        6.26%          2.00%            1.98%           16.53%
                  1 Yr COFI           1.04%           10.73%        3.29%          2.00%            2.00%           16.18%
       2 Yr Fix, 6 mo LIBOR          62.14%           10.77%        6.58%          2.97%            1.21%           17.25%
       3 Yr Fix, 6 mo LIBOR           9.42%            9.81%        5.51%          2.97%            1.03%           16.67%
         3 Yr Fix, 1 Yr CMT           1.44%           10.07%        5.93%          3.00%            2.00%           16.40%
       5 Yr Fix, 6 mo LIBOR           8.52%           10.28%        5.10%          1.74%            1.01%           17.26%
         5 Yr Fix, 1 Yr CMT           0.09%            9.91%        5.24%          3.00%            2.00%           16.91%
 --------------------------- ------------------- -------------- ------------- ---------------- ---------------- --------------
</TABLE>

THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   16
                                                                              16

LEHMAN BROTHERS

GROUP II - COLLATERAL SUMMARY (CONTINUED)

<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
     STATE                            NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
- --------------------------------------------------------------------------------------------------------------------
<S>                                   <C>                  <C>                           <C>  
     MI                                      752                54,830,870.53                     18.61
     CA                                      291                36,452,267.98                     12.37
     NJ                                      170                20,929,750.98                      7.11
     IL                                      189                20,073,672.86                      6.81
     WA                                      116                13,029,842.89                      4.42
     NY                                      124                12,481,180.31                      4.24
     MD                                      105                11,499,781.83                      3.90
     FL                                      137                 9,816,942.08                      3.33
     OH                                      122                 9,329,681.03                      3.17
     PA                                      122                 8,507,342.92                      2.89
     OR                                       74                 8,174,039.14                      2.77
     CO                                       90                 8,068,552.71                      2.74
     MA                                       80                 7,550,132.89                      2.56
     UT                                       66                 6,733,263.29                      2.29
     TX                                       74                 5,917,486.51                      2.01
     IN                                       91                 5,893,910.55                      2.00
     AZ                                       86                 5,860,169.78                      1.99
     MN                                       60                 5,309,740.88                      1.80
     WI                                       63                 4,607,923.38                      1.56
     NV                                       40                 3,943,329.72                      1.34
     VA                                       30                 3,558,513.67                      1.21
     NC                                       43                 3,457,699.06                      1.17
     GA                                       44                 3,424,757.39                      1.16
     KS                                       34                 2,789,292.77                      0.95
     MO                                       43                 2,722,697.95                      0.92
     CT                                       26                 2,680,885.61                      0.91
     OK                                       26                 1,724,554.10                      0.59
     IA                                       24                 1,427,168.83                      0.48
     KY                                       23                 1,320,927.93                      0.45
     NH                                       14                 1,248,467.30                      0.42
     SC                                       18                 1,247,828.77                      0.42
     DE                                       10                 1,113,690.30                      0.38
     TN                                       11                 1,046,330.98                      0.36
     ID                                       12                   945,925.57                      0.32
     NM                                       10                   936,543.14                      0.32
     HI                                        4                   880,982.64                      0.30
</TABLE>

THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).
<PAGE>   17
                                                                              17

LEHMAN BROTHERS

GROUP II - COLLATERAL SUMMARY (CONTINUED)


<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
     STATE (CONTINUED)                NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                    <C>                           <C> 
     RI                                      10                     675,446.86                    0.23
     DC                                       7                     612,991.85                    0.21
     MS                                       6                     513,401.13                    0.17
     NE                                       6                     486,056.14                    0.17
     SD                                       7                     463,053.32                    0.16
     ME                                       7                     450,452.64                    0.15
     LA                                       7                     423,343.64                    0.14
     WV                                       4                     286,580.41                    0.10
     AR                                       3                     265,015.56                    0.09
     WY                                       5                     237,474.28                    0.08
     MT                                       4                     202,360.11                    0.07
     VT                                       2                     156,000.00                    0.05
     AK                                       1                     107,559.40                    0.04
     CO                                       1                      78,748.42                    0.03
     AL                                       2                      76,100.00                    0.03

     Total:                               3,296                 294,570,732.03                  100.00
</TABLE>


<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
    COMBINED LTV (%)                  NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                   <C>                           <C> 
    15.001- 20.000                            6                     152,307.43                    0.05
    20.001- 25.000                            6                     196,681.28                    0.07
    25.001- 30.000                           13                     404,558.81                    0.14
    30.001- 35.000                           15                     757,697.21                    0.26
    35.001- 40.000                           18                   1,249,842.00                    0.42
    40.001- 45.000                           37                   2,189,948.98                    0.74
    45.001- 50.000                           48                   2,867,744.60                    0.97
    50.001- 55.000                           55                   3,153,751.73                    1.07
    55.001- 60.000                           78                   5,320,073.17                    1.81
    60.001- 65.000                          270                  21,335,019.63                    7.24
    65.001- 70.000                          274                  23,441,709.27                    7.96
    70.001- 75.000                          380                  32,840,106.01                   11.15
    75.001- 80.000                          890                  86,173,833.13                   29.25
    80.001- 85.000                          925                  84,309,139.13                   28.62
    85.001- 90.000                          252                  27,603,920.46                    9.37
    90.001- 95.000                           29                   2,574,399.19                    0.87

    Total:                                3,296                 294,570,732.03                  100.00
</TABLE>

THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).

<PAGE>   18
                                                                              18

LEHMAN BROTHERS

GROUP II - COLLATERAL SUMMARY (CONTINUED)



<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
     LOAN RATE (%)                    NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                  <C>                           <C> 
     6.001- 7.000                             2                    508,362.05                       0.17
     7.001- 8.000                            50                  5,812,293.09                       1.97
     8.001- 9.000                           306                 34,119,215.16                      11.58
     9.001-10.000                           780                 79,710,424.49                      27.06
     10.001-11.000                          961                 85,357,032.72                      28.98
     11.001-12.000                          672                 52,695,005.81                      17.89
     12.001-13.000                          293                 19,441,356.97                       6.60
     13.001-14.000                          126                  8,946,791.54                       3.04
     14.001-15.000                           71                  5,224,504.05                       1.77
     15.001-16.000                           35                  2,755,746.15                       0.94

     Total:                               3,296                294,570,732.03                     100.00
</TABLE>

<TABLE>
<CAPTION>
    REMAINING TERM TO MATURITY                                                               % OF TOTAL
    (MONTHS)                          NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                  <C>                           <C> 
    13- 24                                   9                       58,565.50                      0.02
    25- 36                                  22                      182,914.16                      0.06
    37- 48                                  13                      108,725.98                      0.04
    49- 60                                  17                      251,649.26                      0.09
    61- 72                                   5                       99,096.14                      0.03
    109-120                                  5                      269,115.14                      0.09
    133-144                                  7                      191,291.74                      0.06
    145-156                                  1                       26,082.10                      0.01
    169-180                                 32                    2,011,541.72                      0.68
    193-204                                  1                       38,634.16                      0.01
    205-216                                  9                      311,676.53                      0.11
    217-228                                 18                      775,122.49                      0.26
    229-240                                 41                    1,704,581.29                      0.58
    241-252                                 20                      731,274.45                      0.25
    265-276                                  1                      123,000.00                      0.04
    289-300                                 13                    1,116,358.27                      0.38
    313-324                                  1                       67,958.60                      0.02
    325-336                                  2                      400,384.55                      0.14
    337-348                                  8                      649,687.88                      0.22
    349-360                              3,071                  285,453,072.07                     96.90

    Total:                               3,296                  294,570,732.03                    100.00
</TABLE>

THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).
<PAGE>   19
                                                                              19

LEHMAN BROTHERS

GROUP II - COLLATERAL SUMMARY (CONTINUED)



<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
     PRINCIPAL BALANCE ($)            NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                  <C>                           <C> 
     0.01- 5,000.00                           15                     61,461.58                      0.02
     5,000.01- 10,000.00                      32                    234,189.12                      0.08
     10,000.01- 15,000.00                     18                    219,283.02                      0.07
     15,000.01- 20,000.00                     43                    783,854.09                      0.27
     20,000.01- 25,000.00                     59                  1,355,334.57                      0.46
     25,000.01- 30,000.00                    101                  2,810,173.47                      0.95
     30,000.01- 35,000.00                     87                  2,860,365.97                      0.97
     35,000.01- 40,000.00                    137                  5,212,801.12                      1.77
     40,000.01- 45,000.00                    148                  6,365,865.95                      2.16
     45,000.01- 50,000.00                    158                  7,552,733.81                      2.56
     50,000.01- 55,000.00                    149                  7,843,598.61                      2.66
     55,000.01- 60,000.00                    198                 11,436,458.26                      3.88
     60,000.01- 65,000.00                    168                 10,599,140.17                      3.60
     65,000.01- 70,000.00                    181                 12,270,488.96                      4.17
     70,000.01- 75,000.00                    159                 11,550,901.99                      3.92
     75,000.01- 80,000.00                    147                 11,429,373.00                      3.88
     80,000.01- 85,000.00                    130                 10,767,113.51                      3.66
     85,000.01- 90,000.00                    120                 10,553,645.60                      3.58
     90,000.01- 95,000.00                    115                 10,699,706.16                      3.63
     95,000.01-100,000.00                    136                 13,294,562.24                      4.51
     100,000.01-150,000.00                   623                 74,768,890.04                     25.38
     150,000.01-200,000.00                   214                 36,663,839.43                     12.45
     200,000.01-250,000.00                    70                 15,472,752.64                      5.25
     250,000.01-300,000.00                    44                 12,009,939.19                      4.08
     300,000.01-350,000.00                    18                  5,808,047.27                      1.97
     350,000.01-400,000.00                    14                  5,295,082.65                      1.80
     400,000.01-450,000.00                     3                  1,259,212.39                      0.43
     450,000.01-500,000.00                     5                  2,352,800.00                      0.80
     500,000.01-550,000.00                     2                  1,029,956.98                      0.35
     550,000.01+                               2                  2,009,160.24                      0.68

     Total:                                3,296                294,570,732.03                    100.00
</TABLE>

THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).
<PAGE>   20
                                                                              20

LEHMAN BROTHERS

GROUP II - COLLATERAL SUMMARY (CONTINUED)

<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
     SEASONING (MONTHS)               NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                  <C>                           <C>
     0                                     1,113                 95,252,376.65                     32.34
     1-6                                   1,988                190,765,969.92                     64.76
     7-12                                     44                  4,302,816.30                      1.46
     13- 18                                    5                    501,708.05                      0.17
     19- 24                                    1                     52,105.69                      0.02
     31- 36                                    2                    400,384.55                      0.14
     109-114                                   7                    175,366.48                      0.06
     115-120                                  23                    767,487.84                      0.26
     121-126                                  30                    839,781.43                      0.29
     127-132                                  12                    322,004.54                      0.11
     133-138                                  11                    228,553.55                      0.08
     139-144                                  14                    191,913.77                      0.07
     145-150                                  18                    369,166.73                      0.13
     151-156                                  13                    146,290.65                      0.05
     157-162                                  12                    170,240.47                      0.06
     163-168                                   3                     84,565.41                      0.03

     Total:                                3,296                294,570,732.03                    100.00
</TABLE>


<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
     LIFECAP (%)                      NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                  <C>                           <C> 
     <12.000                                   3                    279,067.96                      0.09
     -                                                                                                  
     12.001-12.500                             1                    227,000.00                      0.08
     13.001-13.500                            11                    692,763.10                      0.24
     13.501-14.000                            22                    779,381.04                      0.26
     14.001-14.500                            32                  2,936,845.09                      1.00
     14.501-15.000                            70                  7,040,185.91                      2.39
     15.001-15.500                           149                 17,052,017.00                      5.79
     15.501-16.000                           329                 36,047,784.10                     12.24
     16.001-16.500                           534                 49,502,607.67                     16.80
     16.501-17.000                           476                 46,863,721.40                     15.91
     17.001-17.500                           460                 39,919,497.33                     13.55
     17.501-18.000                           471                 36,664,911.14                     12.45
     18.001-18.500                           229                 17,073,537.35                      5.80
     18.501-19.000                           167                 13,662,139.28                      4.64
     19.001-19.500                           104                  7,351,396.25                      2.50
     19.501-20.000                            75                  5,431,776.58                      1.84
     20.001-20.500                            62                  4,966,941.79                      1.69
     20.501-21.000                            35                  3,064,055.03                      1.04
     21.001-21.500                            30                  2,109,210.84                      0.72
     21.501-22.000                            28                  2,144,283.11                      0.73
     22.001-22.500                             6                    611,809.14                      0.21
     26.001+                                   2                    149,800.92                      0.05

     Total:                                3,296                294,570,732.03                    100.00
</TABLE>

THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).
<PAGE>   21
                                                                              21

LEHMAN BROTHERS

GROUP II - COLLATERAL SUMMARY (CONTINUED)


<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
     FLOOR (%)                        NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                  <C>                           <C>  
     <12.000                               2,842                263,356,949.07                     89.40
     -                                                                                                  
     12.001-12.500                           125                  8,727,656.57                      2.96
     12.501-13.000                           117                  6,926,733.41                      2.35
     13.001-13.500                            53                  3,737,262.47                      1.27
     13.501-14.000                            57                  4,057,269.89                      1.38
     14.001-14.500                            34                  2,803,750.31                      0.95
     14.501-15.000                            33                  2,205,364.16                      0.75
     15.001-15.500                            29                  2,143,937.01                      0.73
     15.501-16.000                             6                    611,809.14                      0.21

     Total:                                3,296                294,570,732.03                    100.00
</TABLE>

<TABLE>
<CAPTION>
                                                                                             % OF TOTAL
     MARGIN (%)                       NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                  <C>                           <C> 
     2.001- 3.000                             56                  1,633,897.79                      0.55
     3.001- 4.000                            143                  8,511,066.04                      2.89
     4.001- 5.000                            349                 37,066,152.29                     12.58
     5.001- 6.000                            688                 73,012,302.28                     24.79
     6.001- 7.000                          1,095                 98,001,817.64                     33.27
     7.001- 8.000                            730                 58,745,623.94                     19.94
     8.001- 9.000                            191                 14,566,194.49                      4.94
     9.001-10.000                             42                  2,945,277.56                      1.00
     10.001-11.000                             2                     88,400.00                      0.03

     Total:                                3,296                294,570,732.03                    100.00
</TABLE>

THIS INFORMATION DOES NOT CONSTITUTE EITHER AN OFFER TO SELL OR A SOLICITATION
OF AN OFFER TO BUY ANY OF THE SECURITIES REFERRED TO HEREIN. OFFERS TO SELL AND
SOLICITATIONS OF OFFERS TO BUY THE SECURITIES ARE MADE ONLY BY , AND THIS
INFORMATION MUST BE READ IN CONJUNCTION WITH, THE FINAL PROSPECTUS SUPPLEMENT
AND THE RELATED PROSPECTUS OR, IF NOT REGISTERED UNDER THE SECURITIES LAWS, THE
FINAL OFFERING MEMORANDUM (THE "OFFERING DOCUMENT"). INFORMATION CONTAINED
HEREIN DOES NOT PURPORT TO BE COMPLETE AND IS SUBJECT TO THE SAME QUALIFICATIONS
AND ASSUMPTIONS, AND SHOULD BE CONSIDERED BY INVESTORS ONLY IN THE LIGHT OF THE
SAME WARNINGS, LACK OF ASSURANCES AND REPRESENTATIONS AND OTHER PRECAUTIONARY
MATTERS, AS DISCLOSED IN THE OFFERING DOCUMENT. INFORMATION REGARDING THE
UNDERLYING ASSETS HAS BEEN PROVIDED BY THE ISSUER OF THE SECURITIES OR AN
AFFILIATE THEREOF AND HAS NOT BEEN INDEPENDENTLY VERIFIED BY LEHMAN BROTHERS
INC. OR ANY AFFILIATE. THE ANALYSES CONTAINED HEREIN HAVE BEEN PREPARED AND
DELIVERED BY LEHMAN BROTHERS INC. AND THE CONTENTS AND ACCURACY THEREOF HAVE NOT
BEEN REVIEWED BY THE ISSUER. THIS INFORMATION WAS PREPARED ON THE BASIS OF
CERTAIN ASSUMPTIONS (INCLUDING, IN CERTAIN CASES, ASSUMPTIONS SPECIFIED BY THE
RECIPIENT HEREOF) REGARDING PAYMENTS, INTEREST RATES, WEIGHTED AVERAGE LIVES,
WEIGHTED AVERAGE LOAN AGE, LOSSES AND OTHER MATTERS, INCLUDING, BUT NOT LIMITED
TO, THE ASSUMPTIONS DESCRIBED IN THE OFFERING DOCUMENT. LEHMAN BROTHERS INC.,
AND ANY OF ITS AFFILIATES, MAKE NO REPRESENTATION OR WARRANTY AS TO THE ACTUAL
RATE OR TIMING OF PAYMENTS ON ANY OF THE UNDERLYING ASSETS OR THE PAYMENTS OR
YIELD ON THE SECURITIES. THIS INFORMATION SUPERSEDES ANY PRIOR VERSIONS HEREOF
AND WILL BE DEEMED TO BE SUPERSEDED BY ANY SUBSEQUENT VERSIONS (INCLUDING, WITH
RESPECT TO ANY DESCRIPTION OF THE SECURITIES OR UNDERLYING ASSETS, THE
INFORMATION CONTAINED IN THE OFFERING DOCUMENT).
<PAGE>   22
                                                                              22

LEHMAN BROTHERS

GROUP II COLLATERAL SUMMARY (CONTINUED)

<TABLE>
<CAPTION>
     NEXT RATE ADJUSTMENT DATE                                                               % OF TOTAL
     (YEAR-MONTH)                     NUMBER OF LOANS      PRINCIPAL BALANCE ($)         PRINCIPAL BALANCE
<S>                                   <C>                  <C>                           <C> 
     1998-01                                  30                  2,332,860.44                      0.79
     1998-02                                  43                  3,242,400.75                      1.10
     1998-03                                 121                 12,336,353.77                      4.19
     1998-04                                 159                 14,972,428.88                      5.08
     1998-05                                  61                  6,362,497.51                      2.16
     1998-06                                  44                  2,713,640.68                      0.92
     1998-07                                  20                  1,151,893.42                      0.39
     1998-08                                  21                  1,583,478.86                      0.54
     1998-09                                  38                  2,554,151.46                      0.87
     1998-10                                  50                  4,767,880.21                      1.62
     1998-11                                  37                  2,478,245.53                      0.84
     1998-12                                  13                    302,145.55                      0.10
     1999-01                                   4                    200,008.86                      0.07
     1999-02                                   1                    109,558.41                      0.04
     1999-03                                   6                    556,118.73                      0.19
     1999-04                                  11                  1,285,377.16                      0.44
     1999-05                                  25                  2,617,140.90                      0.89
     1999-06                                  43                  4,381,517.57                      1.49
     1999-07                                  54                  5,397,276.01                      1.83
     1999-08                                  53                  4,474,701.62                      1.52
     1999-09                                 428                 43,796,935.31                     14.87
     1999-10                                 842                 75,691,312.28                     25.70
     1999-11                                 478                 37,875,741.69                     12.86
     1999-12                                  89                  6,038,375.00                      2.05
     2000-02                                   2                    244,262.70                      0.08
     2000-03                                   1                     34,405.85                      0.01
     2000-04                                   7                    804,200.42                      0.27
     2000-05                                   5                    505,042.02                      0.17
     2000-06                                   8                    628,647.62                      0.21
     2000-07                                  14                  2,009,664.62                      0.68
     2000-08                                   9                    760,604.29                      0.26
     2000-09                                  55                  4,593,716.20                      1.56
     2000-10                                 146                 14,921,663.48                      5.07
     2000-11                                  86                  7,301,561.88                      2.48
     2000-12                                   4                    196,900.00                      0.07
     2002-05                                   2                    433,068.80                      0.15
     2002-06                                   2                    207,686.74                      0.07
     2002-07                                   1                    218,255.56                      0.07
     2002-09                                  63                  5,694,883.62                      1.93
     2002-10                                 131                 11,040,700.52                      3.75
     2002-11                                  89                  7,753,427.11                      2.63

     Total:                                3,296                294,570,732.03                    100.00
</TABLE>

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