BANCFIRST CORP /OK/
8-K, 1997-03-05
NATIONAL COMMERCIAL BANKS
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<PAGE>
 
                      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) FEBRUARY 4, 1997


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


          OKLAHOMA                         0-14384              73-1221379
          --------                         -------              ----------
(State or other jurisdiction of     Commission File Number    (I.R.S. Employer
incorporation or organization)                               Identification No.)
 

   101 NORTH BROADWAY, SUITE 200, OKLAHOMA CITY, OKLAHOMA        73102
   ------------------------------------------------------        -----
             (Address of principal executive offices)          (Zip Code)


       Registrant's telephone number, including area code:  (405)270-1086
                                                            -------------
<PAGE>
 
Item 5.  OTHER EVENTS

On February 4, 1997, the closing of the sale of $25,000,000 of aggregate
liquidation amount of 9.65% Capital Securities, Series A (Liquidation Amount
$1,000 per Capital Security) (the "Capital Securities") of BFC Capital Trust I
(the "Trust") occurred pursuant to the Purchase Agreement dated January 30,
1997, among the Trust, BancFirst Corporation (the "Company"), Bear Stearns &
Co., Inc. and Sandler O'Neill & Partners, L.P.  The Capital Securities are fully
and unconditionally guaranteed by the Company which also sponsored the Trust.
The Capital Securities were issued pursuant to the terms of the Amended and
Restated Declaration of Trust, dated as of February 4, 1997, relating to the
Trust and are guaranteed by the Company under the Guarantee dated as of February
4, 1997.  The proceeds from the sale of the Capital Securities were invested in
the 9.65% Junior Subordinated Deferrable Interest Debentures, Series A due
January 15, 2027 of the Company, which were issued pursuant to an Indenture
dated as of February 4, 1997, by and between the Company and the Bank of New
York, as trustee.

Item 7.  FINANCIAL STATEMENTS AND EXHIBITS.
 
 
(A)  EXHIBIT

<TABLE> 
<CAPTION>  
  EXHIBIT NUMBER         DESCRIPTION OF EXHIBIT
- ------------------     ---------------------------------------------------------
<S>                    <C> 
       4.1               Amended and Restated Declaration of Trust of BFC
                         Capital Trust I dated as of February 4, 1997.

       4.2               Indenture dated as of February 4, 1997.

       4.3               Series A Capital Securities Guarantee Agreement dated
                         as of February 4, 1997.
</TABLE>

                                  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.



February 26, 1997                            /Randy P. Foraker/
                                             --------------------------------
                                             Randy P. Foraker
                                             Sr. Vice President and Controller
<PAGE>
 
                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
  EXHIBIT NUMBER         DESCRIPTION OF EXHIBIT
- ------------------     ---------------------------------------------------------
<S>                    <C>
       4.1               Amended and Restated Declaration of Trust of BFC
                         Capital Trust I dated as of February 4, 1997.

       4.2               Indenture dated as of February 4, 1997.

       4.3               Series A Capital Securities Guarantee Agreement dated
                         as of February 4, 1997.
</TABLE>

<PAGE>
 
                                                                     EXHIBIT 4.1

                      ===================================


                       AMENDED AND RESTATED DECLARATION
                                   OF TRUST
                                      OF
                             BFC CAPITAL TRUST  I
                         DATED AS OF FEBRUARY 4, 1997


                      ===================================
<PAGE>
 
                            CROSS-REFERENCE TABLE*

<TABLE>
<CAPTION>
     Section of
Trust Indenture Act                                     Section of
of 1939, as amended                                     Declaration
- -------------------                                     -----------
<S>                                                     <C>  
     310(b)........................................     Section 5.3
     311(a)........................................     Section 2.2
     311(b)........................................     Section 2.2
     312(b)........................................     Section 2.2
     313...........................................     Section 2.3
     314...........................................     Section 2.4
     314(a)........................................     Section 3.6
     314(c)........................................     Section 2.5
     314(e)........................................     Section 1.1
     315...........................................     Section 3.9
     316(a)........................................     Section 2.6
     316(c)........................................     Section 3.6
     317(a)........................................     Section 3.8
     317(b)........................................     Section 3.8
     318...........................................     Section 2.1
</TABLE>

        
_____________________
* This Cross-Reference Table does not constitute part of the Declaration and
shall not affect the interpretation of any of its terms or provisions.

                                      -i-
<PAGE>
 
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                      Page
                                                                      ----
<S>                                                                   <C> 
ARTICLE I - INTERPRETATION AND DEFINITIONS..............................-1-
     SECTION 1.1    Definitions.........................................-1-

ARTICLE II - TRUST INDENTURE ACT........................................-7-
     SECTION 2.1    Trust Indenture Act; Application....................-7-
     SECTION 2.2    Lists of Holders of Securities......................-7-
     SECTION 2.3    Reports by the Property Trustee.....................-8-
     SECTION 2.4    Periodic Reports to Property Trustee................-8-
     SECTION 2.5    Evidence of Compliance with Conditions Precedent....-8-
     SECTION 2.6    Events of Default; Waiver...........................-8-
     SECTION 2.7    Event of Default; Notice............................-9-

ARTICLE III - ORGANIZATION..............................................-10-
     SECTION 3.1    Name................................................-10-
     SECTION 3.2    Office..............................................-10-
     SECTION 3.3    Purpose.............................................-10-
     SECTION 3.4    Authority...........................................-10-
     SECTION 3.5    Title to Property of the Trust......................-10-
     SECTION 3.6    Powers and Duties of the Administrative Trustees....-10-
     SECTION 3.7    Prohibition of Actions by the Trust and the
                      Trustees..........................................-13-
     SECTION 3.8    Powers and Duties of the Property Trustee...........-13-
     SECTION 3.9    Certain Duties and Responsibilities of the Property
                      Trustee...........................................-15-
     SECTION 3.10   Certain Rights of Property Trustee..................-16-
     SECTION 3.11   Delaware Trustee....................................-17-
     SECTION 3.12   Execution of Documents..............................-18-
     SECTION 3.13   Not Responsible for Recitals or Issuance of
                      Securities........................................-18-
     SECTION 3.14   Duration of Trust...................................-18-
     SECTION 3.15   Mergers.............................................-18-

ARTICLE IV - SPONSOR....................................................-19-
     SECTION 4.1    Sponsor's Purchase of Common Securities.............-19-
     SECTION 4.2    Responsibilities of the Sponsor.....................-19-
     SECTION 4.3    Right to Proceed....................................-20-

ARTICLE V - TRUSTEES....................................................-20-
     SECTION 5.1    Number of Trustees: Appointment of Co-Trustee.......-20-
     SECTION 5.2    Delaware Trustee....................................-21-
     SECTION 5.3    Property Trustee: Eligibility.......................-21-
     SECTION 5.4    Certain Qualifications of Administrative Trustees
                      and Delaware Trustee Generally....................-22-
     SECTION 5.5    Administrative Trustees.............................-22-
     SECTION 5.6    Appointment, Removal and Resignation of Trustees....-22-
     SECTION 5.7    Vacancies among Trustees............................-23-
     SECTION 5.8    Effect of Vacancies.................................-23-
     SECTION 5.9    Meetings............................................-24-
     SECTION 5.10   Delegation of Power.................................-24-
     SECTION 5.11   Merger, Conversion, Consolidation or Succession
                      to Business.......................................-24-
</TABLE>

                                     -ii-
<PAGE>
 
<TABLE>
                                                                        Page
                                                                        ----
<S>                                                                     <C>
ARTICLE VI - DISTRIBUTIONS..............................................-25-
     SECTION 6.1    Distributions.......................................-25-

ARTICLE VII - ISSUANCE OF SECURITIES....................................-25-
     SECTION 7.1    General Provisions Regarding Securities.............-25-
     SECTION 7.2    Execution and Authentication........................-25-
     SECTION 7.3    Form and Dating.....................................-26-
     SECTION 7.4    Registrar Paying Agent and Exchange Agent...........-27-
     SECTION 7.5    Paying Agent to Hold Money in Trust.................-27-
     SECTION 7.6    Replacement Securities..............................-28-
     SECTION 7.7    Outstanding Capital Securities......................-28-
     SECTION 7.8    Capital Securities in Treasury......................-28-
     SECTION 7.9    Temporary Securities................................-28-
     SECTION 7.10   Cancellation........................................-29-
     SECTION 7.11   CUSIP Numbers.......................................-29-

ARTICLE VIII - TERMINATION OF TRUST.....................................-30-
     SECTION 8.1    Termination of Trust................................-30-

ARTICLE IX - TRANSFER OF INTERESTS......................................-30-
     SECTION 9.1    Transfer of Securities..............................-30-
     SECTION 9.2    Transfer Procedures and Restrictions................-31-
     SECTION 9.3    Deemed Security Holders.............................-37-
     SECTION 9.4    Book Entry Interests................................-37-
     SECTION 9.5    Notices to Clearing Agency..........................-37-
     SECTION 9.6    Appointment of Successor Clearing Agency............-37-

ARTICLE X - LIMITATION OF LIABILITY OF HOLDERS OF SECURITIES, TRUSTEES
  OR OTHERS.............................................................-38-
     SECTION 10.1   Liability...........................................-38-
     SECTION 10.2   Exculpation.........................................-38-
     SECTION 10.3   Fiduciary Duty......................................-38-
     SECTION 10.4   Indemnification.....................................-39-
     SECTION 10.5   Compensation of the Property Trustee and Delaware
                      Trustee...........................................-41-
     SECTION 10.6   Outside Businesses..................................-41-

ARTICLE XI - ACCOUNTING.................................................-41-
     SECTION 11.1   Fiscal Year.........................................-41-
     SECTION 11.2   Certain Accounting Matters..........................-42-
     SECTION 11.3   Banking.............................................-42-
     SECTION 11.4   Withholding.........................................-42-

ARTICLE XII - AMENDMENTS AND MEETINGS...................................-43-
     SECTION 12.1   Amendments..........................................-43-
     SECTION 12.2   Meetings of the Holders of Securities; Action by
                      Written Consent...................................-44-

ARTICLE XIII - REPRESENTATIONS OF PROPERTY TRUSTEE AND DELAWARE TRUSTEE.-45-
     SECTION 13.1   Representations and Warranties of Property Trustee..-45-
     SECTION 13.2   Representations and Warranties of Delaware Trustee..-46-
</TABLE> 
 
                                    -iii- 
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                                        Page
                                                                        ----
<S>                                                                     <C>
ARTICLE XIV - REGISTRATION RIGHTS.......................................-46-
     SECTION 14.1   Registration Rights Agreement; Liquidated Damages...-46-

ARTICLE XV - MISCELLANEOUS..............................................-47-
     SECTION 15.1   Notices.............................................-47-
     SECTION 15.2   Governing Law.......................................-48-
     SECTION 15.3   Intention of the Parties............................-48-
     SECTION 15.4   Headings............................................-49-
     SECTION 15.5   Successors and Assigns..............................-49-
     SECTION 15.6   Partial Enforceability..............................-49-
     SECTION 15.7   Counterparts........................................-49-

ANNEX I - TERMS OF 9.65% SERIES A/SERIES B
     CAPITAL SECURITIES AND 9.65% COMMON SECURITIES..................... I-1


EXHIBIT A-1 - FORM OF CAPITAL SECURITY CERTIFICATE......................A1-1

EXHIBIT A-2 - FORM OF COMMON SECURITY CERTIFICATE.......................A2-1
</TABLE>

                                     -iv-
<PAGE>
 
                             AMENDED AND RESTATED
                             DECLARATION OF TRUST
                                      OF
                              BFC CAPITAL TRUST I

                         Dated as of February 4, 1997


     AMENDED AND RESTATED DECLARATION OF TRUST ("Declaration") dated and
effective as of February 4, 1997, by the Trustees (as defined herein), the
Sponsor (as defined herein) and by the holders, from time to time, of undivided
beneficial interests in the Trust to be issued pursuant to this Declaration;

     WHEREAS, the Trustees and the Sponsor established BFC Capital Trust I (the
"Trust"), a trust formed under the Delaware Business Trust Act pursuant to a
Declaration of Trust dated as of January 28, 1997 (the "Original Declaration"),
and a Certificate of Trust filed with the Secretary of State of the State of
Delaware on January 28, 1997, for the purpose of issuing and selling certain
securities representing undivided beneficial interests in the assets of the
Trust and investing the proceeds thereof in certain Debentures of the Debenture
Issuer (each as hereinafter defined);

     WHEREAS, prior to the date hereof, no Securities (as defined herein) have
been issued;

     WHEREAS, all of the Trustees and the Sponsor, by this Declaration, amend
and restate each and every term and provision of the Original Declaration; and

     NOW, THEREFORE, it being the intention of the parties hereto to continue
the Trust as a business trust under the Business Trust Act and that this
Declaration constitute the governing instrument of such business trust, the
Trustees declare that all assets contributed to the Trust will be held in trust
for the benefit of the holders, from time to time, of the securities
representing undivided beneficial interests in the assets of the Trust issued
hereunder, subject to the provisions of this Declaration and, in consideration
of the mutual covenants contained herein and other good and valuable
consideration, the receipt of which is hereby acknowledged, the Trustees,
intending to be legally bound hereby, agree as follows.

                                   ARTICLE I
                        INTERPRETATION AND DEFINITIONS

SECTION 1.1    Definitions.
               ----------- 

     Unless the context otherwise requires:

     (a)       Capitalized terms used in this Declaration but not defined in the
preamble above have the respective meanings assigned to them in this Section
1.1;

     (b)       a term defined anywhere in this Declaration has the same meaning
throughout;

     (c)       all references to "the Declaration" or "this Declaration" are to
this Declaration as modified, supplemented or amended from time to time;

     (d)       all references in this Declaration to Articles and Sections and
Annexes and Exhibits are to Articles and Sections of and Annexes and Exhibits to
this Declaration unless otherwise specified;

     (e)       a term defined in the Trust Indenture Act has the same meaning
when used in this Declaration unless otherwise defined in this Declaration or
unless the context otherwise requires;

                                      -1-
<PAGE>
 
     (f)       a term defined in the Indenture (as defined herein) has the same
meaning when used in this Declaration unless otherwise defined in this
Declaration or the context otherwise requires; and

     (g)       a reference to the singular includes the plural and vice versa.

     "Administrative Trustee" has the meaning set forth in Section 5.1.
      ----------------------                                           

     "Affiliate" has the same meaning as given to that term in Rule 405 under
      ---------                                                              
the Securities Act or any successor rule thereunder.

     "Agent" means any Paying Agent, Registrar or Exchange Agent.
      -----                                                      

     "Authorized Officer" of a Person means any other Person that is authorized
      ------------------                                                       
to legally bind such former Person.

     "Book Entry Interest" means a beneficial interest in a Global Capital
      -------------------                                                 
Security registered in the name of a Clearing Agency or its nominee, ownership
and transfers of which shall be maintained and made through book entries by a
Clearing Agency as described in Section 9.4.

     "Business Day" means any day other than a Saturday or a Sunday or a day on
      ------------                                                             
which banking institutions in The City of New York or Oklahoma City, Oklahoma
are authorized or required by law or executive order to close.

     "Business Trust Act" means Chapter 38 of Title 12 of the Delaware Code, 12
      ------------------                                                       
Del. Code (S) 3801 et seq., as it may be amended from time to time or any
successor legislation.

     "Capital Security Beneficial Owner" means, with respect to a Book Entry
      ---------------------------------                                     
Interest, a Person who is the beneficial owner of such Book Entry Interest, as
reflected on the books of the Clearing Agency, or on the books of a Person
maintaining an account with such Clearing Agency (directly as a Clearing Agency
Participant or as an indirect participant, in each case in accordance with the
rules of such Clearing Agency).

     "Capital Securities" means, collectively, the Series A Capital Securities
      ------------------                                                      
and the Series B Capital Securities.

     "Capital Securities Guarantee" means, collectively, the Series A Capital
      ----------------------------                                           
Securities Guarantee and the Series B Capital Securities Guarantee.

     "Capital Security Certificate" has the meaning set forth in Section 9.4.
      ----------------------------                                           

     "Clearing Agency" means an organization registered as a "Clearing Agency"
      ---------------                                                         
pursuant to Section 17A of the Exchange Act that is acting as depositary for the
Capital Securities and in whose name or in the name of a nominee of that
organization shall be registered a Global Certificate and which shall undertake
to effect book entry transfers and pledges of the Capital Securities.

     "Clearing Agency Participant" means a broker, dealer, bank, other financial
      ---------------------------                                               
institution or other Person for whom from time to time the Clearing Agency
effects book entry transfers and pledges of securities deposited with the
Clearing Agency.

     "Closing Time" means the "Closing Time" under the Purchase Agreement.
      ------------                                                        

     "Code" means the Internal Revenue Code of 1986, as amended from time to
      ----                                                                  
time, or any successor legislation.

     "Commission" means the United States Securities and Exchange Commission as
      ----------                                                               
from time to time constituted, or if any time after the execution of this
Declaration such Commission is not existing and performing the duties now
assigned to it under applicable Federal securities laws, then the body
performing such duties at such time.

                                      -2-
<PAGE>
 
     "Common Securities" has the meaning specified in Section 7.1(a).
      -----------------                                              

     "Common Securities Guarantee" means the Common Securities Guarantee
      ---------------------------                                       
Agreement, dated as of the Closing Time, of the Sponsor in respect of the Common
Securities.

     "Common Securities Subscription Agreement" means the Common Securities
      ----------------------------------------                             
Subscription Agreement, dated as of the Closing Time, between the Trust and the
Sponsor relating to the Common Securities.

     "Company Indemnified Person" means (a) any Administrative Trustee; (b) any
      --------------------------                                               
Affiliate of any Administrative Trustee; (c) any officers, directors,
shareholders, members, partners, employees, representatives or agents of any
Administrative Trustee; or (d) any officer, employee or agent of the Trust or
its Affiliates.

     "Corporate Trust Office" means the office of the Property Trustee at which
      ----------------------                                                   
the corporate trust business of the Property Trustee shall, at any particular
time, be principally administered, which office at the date of execution of this
Agreement is located at 101 Barclay Street, 21 West, New York, New York 10286.

     "Covered Person" means: (a) any officer, director, shareholder, partner,
      --------------                                                         
member, representative, employee or agent of (i) the Trust or (ii) the Trust's
Affiliates; and (b) any Holders of Securities.

     "Debenture Issuer" means BancFirst Corporation, an Oklahoma corporation, or
      ----------------                                                          
any successor entity resulting from any consolidation, amalgamation, merger or
other business combination, in its capacity as issuer of the Debentures under
the Indenture.

     "Debenture Trustee" means The Bank of New York, a New York banking
      -----------------                                                
corporation, as trustee under the Indenture until a successor is appointed
thereunder, and thereafter means such successor trustee.

     "Debentures" means, collectively, the Series A Debentures and the Series B
      ----------                                                               
Debentures.

     "Default" means an event, act or condition that with notice or lapse of
      -------                                                               
time, or both, would constitute an Event of Default.

     "Definitive Capital Securities" has the meaning set forth in Section
      -----------------------------                                      
7.3(d).

     "Delaware Trustee" has the meaning set forth in Section 5.2.
      ----------------                                           

     "Direct Action" has the meaning set forth in Section 3.8(e).
      -------------                                              

     "Distribution" means a distribution payable to Holders of Securities in
      ------------                                                          
accordance with Section 6.1.

     "DTC" means The Depository Trust Company, the initial Clearing Agency.
      ---                                                                  

     "Event of Default" in respect of the Securities means an Event of Default
      ----------------                                                        
(as defined in the Indenture) that has occurred and is continuing in respect of
the Debentures.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended from
      ------------                                                            
time to time, or any successor legislation.

     "Exchange Agent" has the meaning set forth in Section 7.4.
      --------------                                           

     "Exchange Offer" means the offer that may be made pursuant to the
      --------------                                                  
Registration Rights Agreement (i) by the Trust to exchange Series B Capital
Securities for Series A Capital Securities and (ii) by the Debenture Issuer to
exchange Series B Debentures for Series A Debentures and the Series B Capital
Securities Guarantee for the Series A Capital Securities Guarantee.

                                      -3-
<PAGE>
 
     "Exchange Offer Registration Statement" has the meaning set forth in
      -------------------------------------                              
Section 14.1.

     "Federal Reserve Board" means the Board of Governors of the Federal Reserve
      ---------------------                                                     
System.

     "Fiduciary Indemnified Person" has the meaning set forth in Section 10.
      ----------------------------                                          
4(b).

     "Global Capital Securities" has the meaning set forth in Section 7.3(b).
      -------------------------                                              

     "Holder" means a Person in whose name a Security is registered, such Person
      ------                                                                    
being a beneficial owner within the meaning of the Business Trust Act.

     "Indemnified Person" means a Company Indemnified Person or a Fiduciary
      ------------------                                                   
Indemnified Person.

     "Indenture" means the Indenture, dated as of the Closing Time, between the
      ---------                                                                
Debenture Issuer and the Debenture Trustee, as amended from time to time.

     "Initial Optional Redemption Date" has the meaning set forth in Section
      --------------------------------                                      
4(b) of Annex I hereto.

     "Investment Company" means an investment company as defined in the
      ------------------                                               
Investment Company Act.

     "Investment Company Act" means the Investment Company Act of 1940, as
      ----------------------                                              
amended from time to time, or any successor legislation.

     "Legal Action" has the meaning set forth in Section 3.6(g).
      ------------                                              

     "Like Amount" has the meaning set forth in Section 3 of Annex I hereto.
      -----------                                                           

     "List of Holders" has the meaning set forth in Section 2.2(a).
      ---------------                                              

     "Majority in liquidation amount" means, with respect to the Trust
      ------------------------------                                  
Securities, except as provided in the terms of the Capital Securities or by the
Trust Indenture Act, Holder(s) of outstanding Trust Securities voting together
as a single class or, as the context may require, Holders of outstanding Capital
Securities or Holders of outstanding Common Securities voting separately as a
class, who are the record owners of more than 50% of the aggregate liquidation
amount (including the stated amount that would be paid on redemption,
liquidation or otherwise, plus accumulated and unpaid Distributions to the date
upon which the voting percentages are determined) of all outstanding Securities
of the relevant class.

     "Offering Memorandum" has the meaning set forth in Section 3.6(b).
      -------------------                                              

     "Officers' Certificate" means, with respect to any Person, a certificate
      ---------------------                                                  
signed by the Chief Executive Officer, the President, a Vice President, the
Secretary or an Assistant Secretary of such Person. Any Officers' Certificate
delivered with respect to compliance with a condition or covenant provided for
in this Declaration shall include:

     (i)       a statement that each officer signing the Certificate has read
the covenant or condition and the definitions relating thereto;

     (ii)      a brief statement of the nature and scope of the examination or
investigation undertaken by each officer in rendering the Certificate;

     (iii)     a statement that each such officer has made such examination or
investigation as, in such officer's opinion, is necessary to enable such officer
to express an informed opinion as to whether or not such covenant or condition
has been complied with; and

                                      -4-
<PAGE>
 
     (iv)      a statement as to whether, in the opinion of each such officer,
such condition or covenant has been complied with.

     "Opinion of Counsel" means a written opinion of counsel, who may be an
      ------------------                                                   
employee of the Sponsor, and who shall be acceptable to the Property Trustee.

     "Participants" has the meaning set forth in Section 7.3(c).
      ------------                                              

     "Paying Agent" has the meaning specified in Section 7.4.
      ------------                                           

     "Person" means a legal person, including any individual, corporation,
      ------                                                              
estate, partnership, joint venture, association, joint stock company, limited
liability company, trust, unincorporated association, or government or any
agency or political subdivision thereof, or any other entity of whatever nature.

     "Property Trustee" has the meaning set forth in Section 5.3(a).
      ----------------                                              

     "Property Trustee Account" has the meaning set forth in Section 3.8(c).
      ------------------------                                              

     "Purchase Agreement" means the Purchase Agreement, dated January 30, 1997,
      ------------------                                                       
by and among the Trust, the Debenture Issuer and the Initial Purchasers named
therein.

     "QIBs" shall mean qualified institutional buyers as defined in Rule 144A.
      ----                                                                    

     "Quorum" means a majority of the Administrative Trustees or, if there are
      ------                                                                  
only two Administrative Trustees, both of them.

     "Registrar" has the meaning set forth in Section 7.4.
      ---------                                           

     "Registration Rights Agreement" means the Registration Rights Agreement,
      -----------------------------                                          
dated as of the Closing Time, by and among the Trust, the Debenture Issuer and
the Initial Purchasers named therein, as amended from time to time.

     "Registration Statement" has the meaning set forth in the Registration
      ----------------------                                               
Rights Agreement.

     "Regulation S" means Regulation S under the Securities Act, as such
      ------------                                                      
regulation may be amended from time to time, or any similar rule or regulation
hereafter adopted by the Commission.

     "Regulation S Global Capital Security" has the meaning set forth in Section
      ------------------------------------                                      
7.3(b).

     "Related Party" means, with respect to the Sponsor, any direct or indirect
      -------------                                                            
wholly owned subsidiary of the Sponsor or any other Person that owns, directly
or indirectly, 100% of the outstanding voting securities of the Sponsor.

     "Responsible Officer" means, with respect to the Property Trustee, any
      -------------------                                                  
officer within the Corporate Trust Office of the Property Trustee, including any
vice president, any assistant vice president, the secretary, any assistant
secretary, the treasurer, any assistant treasurer or other officer of the
Corporate Trust Office of the Property Trustee customarily performing functions
similar to those performed by any of the above designated officers, and also
means, with respect to a particular corporate trust matter, any other officer to
whom such matter is referred because of that officer's knowledge of and
familiarity with the particular subject.

     "Restricted Definitive Capital Securities" has the meaning set forth in
      ----------------------------------------                              
Section 7.3(d).

     "Restricted Capital Security" means a Capital Security required by Section
      ---------------------------                                              
9.2 to contain a Restricted Securities Legend.

                                      -5-
<PAGE>
 
     "Restricted Securities Legend" has the meaning set forth in Section 9.2.
      ----------------------------                                           

     "Rule 3a-5" means Rule 3a-5 under the Investment Company Act, or any
      ---------                                                          
successor rule or regulation.

     "Rule 144" means Rule 144 under the Securities Act, as such rule may be
      --------                                                              
amended from time to time, or any similar rule or regulation hereafter adopted
by the Commission.

     "Rule 144A" means Rule 144A under the Securities Act, as such rule may be
      ---------                                                               
amended from time to time, or any similar rule or regulation hereafter adopted
by the Commission.

     "Rule 144A Global Capital Security" has the meaning set forth in Section
      ---------------------------------                                      
7.3(b).

     "Securities" or "Trust Securities" means the Common Securities and the
      ----------      ----------------                                     
Capital Securities.

     "Securities Act" means the Securities Act of 1933, as amended from time to
      --------------                                                           
time, or any successor legislation.

     "Securities Guarantees" means the Common Securities Guarantee and the
      ---------------------                                               
Capital Securities Guarantee.

     "Series A Capital Securities" has the meaning specified in Section 7.1(a).
      ---------------------------                                              

     "Series A Capital Securities Guarantee" means the Series A Capital
      -------------------------------------                            
Securities Guarantee Agreement, dated as of the Closing Time, between the
Sponsor and The Bank of New York as guarantee trustee in respect of the Series A
Capital Securities.

     "Series A Debentures" means the 9.65% Series A Junior Subordinated
      -------------------                                              
Deferrable Interest Debentures due January 15, 2027 of the Debenture Issuer
issued pursuant to the Indenture.

     "Series B Capital Securities" has the meaning specified in Section 7.1(a).
      ---------------------------                                              

     "Series B Capital Securities Guarantee" means the Series B Capital
      -------------------------------------                            
Securities Guarantee Agreement to be entered in connection with the Exchange
Offer by the Sponsor in respect of the Series B Capital Securities.

     "Series B Debentures" means the 9.65% Series B Junior Subordinated
      -------------------                                              
Deferrable Interest Debentures due January 15, 2027 of the Debenture Issuer
issued pursuant to the Indenture.

     "Special Event" has the meaning set forth in Section 4(c) of Annex I
      -------------                                                      
hereto.

     "Special Event Redemption Price" has the meaning set forth in Section 4(c)
      ------------------------------                                           
of Annex I hereto.

     "Sponsor" means BancFirst Corporation, an Oklahoma corporation, or any
      -------                                                              
successor Person resulting from any merger, consolidation, amalgamation or other
business combination, in its capacity as sponsor of the Trust.

     "Successor Entity" has the meaning specified in Section 3.15(b).
      ----------------                                               

     "Successor Property Trustee" has the meaning specified in Section 3.8(f).
      --------------------------                                              

     "Successor Securities" has the meaning specified in Section 3.15(b).
      --------------------                                               

     "Super Majority" has the meaning set forth in Section 2.6(a)(ii).
      --------------                                                  

     "10% in liquidation amount" means, with respect to the Trust Securities,
      -------------------------                                              
except as provided in the terms of the Capital Securities or by the Trust
Indenture Act, Holder(s) of outstanding Trust Securities voting together as a
single class or, as the context may require, Holders of outstanding Capital
Securities or Holders of outstanding Common

                                      -6-
<PAGE>
 
Securities voting separately as a class, who are the record owners of 10% or
more of the aggregate liquidation amount (including the stated amount that would
be paid on redemption, liquidation or otherwise, plus accumulated and unpaid
Distributions to the date upon which the voting percentages are determined) of
all outstanding Securities of the relevant class.

     "Treasury Regulations" means the income tax regulations, including
      --------------------                                             
temporary and proposed regulations, promulgated under the Code by the United
States Treasury, as such regulations may be amended from time to time (including
corresponding provisions of succeeding regulations).

     "Trustee" or "Trustees" means each Person who has signed this Declaration
      -------      --------                                                   
as a trustee, so long as such Person shall continue as trustee of the Trust in
accordance with the terms hereof, and all other Persons who may from time to
time be duly appointed, qualified and serving as Trustees in accordance with the
provisions hereof, and references herein to a Trustee or the Trustees shall
refer to such Person or Persons solely in their capacity as trustees hereunder.

     "Trust Indenture Act" means the Trust Indenture Act of 1939, as amended
      -------------------                                                   
from time to time, or any successor legislation.

     "Unrestricted Global Capital Security" has the meaning set forth in Section
      ------------------------------------                                      
9.2(b).

                                  ARTICLE II
                              TRUST INDENTURE ACT

SECTION 2.1    Trust Indenture Act; Application.
               -------------------------------- 

     (a)       This Declaration is subject to the provisions of the Trust
Indenture Act that are required to be part of this Declaration and shall, to the
extent applicable, be governed by such provisions.

     (b)       The Property Trustee shall be the only Trustee that is a Trustee
for the purposes of the Trust Indenture Act.

     (c)       If and to the extent that any provision of this Declaration
limits, qualifies or conflicts with the duties imposed by (S)(S) 310 to 317,
inclusive, of the Trust Indenture Act, such imposed duties shall control.

     (d)       The application of the Trust Indenture Act to this Declaration
shall not affect the nature of the Securities as equity securities representing
undivided beneficial interests in the assets of the Trust.

SECTION 2.2    Lists of Holders of Securities.
               ------------------------------ 

     (a)       Each of the Sponsor and the Administrative Trustees on behalf of
the Trust shall provide the Property Trustee, unless the Property Trustee is
Registrar for the Securities (i) within 14 days after each record date for
payment of Distributions, a list, in such form as the Property Trustee may
reasonably require, of the names and addresses of the Holders of the Securities
("List of Holders") as of such record date, provided that neither the Sponsor
nor the Administrative Trustees on behalf of the Trust shall be obligated to
provide such List of Holders at any time the List of Holders does not differ
from the most recent List of Holders given to the Property Trustee by the
Sponsor and the Administrative Trustees on behalf of the Trust, and (ii) at any
other time, within 30 days of receipt by the Trust of a written request for a
List of Holders as of a date no more than 14 days before such List of Holders is
given to the Property Trustee. The Property Trustee shall preserve, in as
current a form as is reasonably practicable, all information contained in Lists
of Holders given to it or which it receives in the capacity as Paying Agent (if
acting in such capacity), provided that the Property Trustee may destroy any
List of Holders previously given to it on receipt of a new List of Holders.

     (b)       The Property Trustee shall comply with its obligations under
(S)(S) 311(a), 311(b) and 312(b) of the Trust Indenture Act.

                                      -7-
<PAGE>
 
SECTION 2.3    Reports by the Property Trustee.
               ------------------------------- 

     Within 60 days after January 15 of each year, commencing January 15, 1998,
the Property Trustee shall provide to the Holders of the Capital Securities such
reports as are required by (S) 313 of the Trust Indenture Act, if any, in the
form and in the manner provided by (S) 313 of the Trust Indenture Act.  The
Property Trustee shall also comply with the requirements of (S) 313(d) of the
Trust Indenture Act.

SECTION 2.4    Periodic Reports to Property Trustee.
               ------------------------------------ 

     Each of the Sponsor and the Administrative Trustees on behalf of the Trust
shall provide to the Property Trustee such documents, reports and information as
are required by (S) 314 (if any) of the Trust Indenture Act and the compliance
certificate required by (S) 314 of the Trust Indenture Act in the form, in the
manner and at the times required by (S) 314 of the Trust Indenture Act.

SECTION 2.5    Evidence of Compliance with Conditions Precedent.
               ------------------------------------------------ 

     Each of the Sponsor and the Administrative Trustees on behalf of the Trust
shall provide to the Property Trustee such evidence of compliance with any
conditions precedent provided for in this Declaration that relate to any of the
matters set forth in (S) 314(c) of the Trust Indenture Act. Any certificate or
opinion required to be given by an officer pursuant to (S) 314(c)(1) of the
Trust Indenture Act may be given in the form of an Officers' Certificate.

SECTION 2.6    Events of Default; Waiver.
               ------------------------- 

     (a)       The Holders of a Majority in liquidation amount of Capital
Securities may, by vote, on behalf of the Holders of all of the Capital
Securities, waive any past Event of Default in respect of the Capital Securities
and its consequences, provided that, if the underlying Event of Default under
the Indenture:

          (i)       is not waivable under the Indenture, the Event of Default
     under the Declaration shall also not be waivable; or

          (ii)      requires the consent or vote of greater than a majority in
     aggregate principal amount of the holders of the Debentures (a "Super
     Majority") to be waived under the Indenture, the Event of Default under the
     Declaration may only be waived by the vote of the Holders of at least the
     proportion in aggregate liquidation amount of the Capital Securities that
     the relevant Super Majority represents of the aggregate principal amount of
     the Debentures outstanding.

The foregoing provisions of this Section 2.6(a) shall be in lieu of (S)
316(a)(1)(B) of the Trust Indenture Act and such (S) 316(a)(1)(B) of the Trust
Indenture Act is hereby expressly excluded from this Declaration and the
Securities, as permitted by the Trust Indenture Act. Upon such waiver, any such
Default shall cease to exist, and any Event of Default with respect to the
Capital Securities arising therefrom shall be deemed to have been cured, for
every purpose of this Declaration, but no such waiver shall extend to any
subsequent or other Default or an Event of Default with respect to the Capital
Securities or impair any right consequent thereon. Any waiver by the Holders of
the Capital Securities of an Event of Default with respect to the Capital
Securities shall also be deemed to constitute a waiver by the Holders of the
Common Securities of any such Event of Default with respect to the Common
Securities for all purposes of this Declaration without any further act, vote,
or consent of the Holders of the Common Securities.

     (b)       The Holders of a Majority in liquidation amount of the Common
Securities may, by vote, on behalf of the Holders of all of the Common
Securities, waive any past Event of Default with respect to the Common
Securities and its consequences, provided that, if the underlying Event of
                                 -------- ----                            
Default under the Indenture:

          (i)       is not waivable under the Indenture, except where the
     Holders of the Common Securities are deemed to have waived such Event of
     Default under the Declaration as provided below in this Section 2.6(b), the
     Event of Default under the Declaration shall also not be waivable; or

                                      -8-
<PAGE>
 
          (ii)      requires the consent or vote of a Super Majority to be
     waived, except where the Holders of the Common Securities are deemed to
     have waived such Event of Default under the Declaration as provided below
     in this Section 2.6(b), the Event of Default under the Declaration may only
     be waived by the vote of the Holders of at least the proportion in
     aggregate liquidation amount of the Common Securities that the relevant
     Super Majority represents of the aggregate principal amount of the
     Debentures outstanding;

provided further, each Holder of Common Securities will be deemed to have waived
- -------- -------                                                                
any such Event of Default and all Events of Default with respect to the Common
Securities and its consequences if all Events of Default with respect to the
Capital Securities have been cured, waived or otherwise eliminated, and until
such Events of Default have been so cured, waived or otherwise eliminated, the
Property Trustee will be deemed to be acting solely on behalf of the Holders of
the Capital Securities and only the Holders of the Capital Securities will have
the right to direct the Property Trustee in accordance with the terms of the
Securities.  The foregoing provisions of this Section 2.6(b) shall be in lieu of
(S)(S) 316(a)(1)(A) and 316(a)(1)(B) of the Trust Indenture Act and such (S)(S)
316(a)(1)(A) and 316(a)(1)(B) of the Trust Indenture Act are hereby expressly
excluded from this Declaration and the Securities, as permitted by the Trust
Indenture Act.  Subject to the foregoing provisions of this Section 2.6(b), upon
such waiver, any such Default shall cease to exist and any Event of Default with
respect to the Common Securities arising therefrom shall be deemed to have been
cured for every purpose of this Declaration, but no such waiver shall extend to
any subsequent or other Default or Event of Default with respect to the Common
Securities or impair any right consequent thereon.

     (c)       A waiver of an Event of Default under the Indenture by the
Property Trustee, at the direction of the Holders of the Capital Securities,
constitutes a waiver of the corresponding Event of Default under this
Declaration. The foregoing provisions of this Section 2.6(c) shall be in lieu of
(S) 316(a)(1)(B) of the Trust Indenture Act and such (S) 316(a)(1)(B) of the
Trust Indenture Act is hereby expressly excluded from this Declaration and the
Securities, as permitted by the Trust Indenture Act.

SECTION 2.7    Event of Default; Notice.
               ------------------------ 

     (a)       The Property Trustee shall, within 90 days after a Responsible
Officer obtains knowledge of the occurrence of a Default, transmit by mail,
first class postage prepaid, to the Holders of the Securities, the
Administrative Trustees and the Sponsor, notices of all Defaults with respect to
the Securities actually known to a Responsible Officer of the Property Trustee,
unless such Defaults have been cured before the giving of such notice; provided
that, except for a Default in the payment of principal of (or premium, if any)
or interest on any of the Debentures, the Property Trustee shall be protected in
withholding such notice if and so long as a Responsible Officer of the Property
Trustee in good faith determines that the withholding of such notice is in the
interests of the Holders of the Securities.

     (b)       The Property Trustee shall not be deemed to have knowledge of any
Default or Event of Default except:

          (i)       a Default or Event of Default under Sections 5.1(a) and
     5.1(b) of the Indenture; or

          (ii)      any Default or Event of Default as to which the Property
     Trustee shall have received written notice or of which a Responsible
     Officer of the Property Trustee charged with the administration of the
     Declaration shall have actual knowledge.

     (c)       Within ten Business Days after the occurrence of any Event of
Default actually known to the Property Trustee, the Property Trustee shall
transmit notice of such Event of Default to the Holders of the Capital
Securities, the Administrative Trustees and the Sponsor, unless such Event of
Default shall have been cured or waived. The Sponsor and the Administrative
Trustees shall file annually with the Property Trustee a certification as to
whether or not they are in compliance with all the conditions and covenants
applicable to them under this Declaration.

                                      -9-
<PAGE>
 
                                  ARTICLE III
                                 ORGANIZATION

SECTION 3.1    Name.
               ---- 

     The Trust is named "BFC Capital Trust I" as such name may be modified from
time to time by the Administrative Trustees following written notice to the
Holders of Securities. The Trust's activities may be conducted under the name of
the Trust or any other name deemed advisable by the Administrative Trustees.

SECTION 3.2    Office.
               ------ 

     The address of the principal office of the Trust is c/o BancFirst
Corporation, 101 N. Broadway, Oklahoma City, Oklahoma 73102. On ten Business
Days prior written notice to the Property Trustee, the Delaware Trustee and the
Holders of Securities, the Administrative Trustees may designate another
principal office.

SECTION 3.3    Purpose.
               ------- 

     The exclusive purposes and functions of the Trust are (a) to issue and sell
Securities, (b) use the proceeds from the sale of the Securities to acquire the
Debentures, and (c) except as otherwise limited herein, to engage in only those
other activities necessary, advisable or incidental thereto, including without
limitation, those activities specified in Section 3.6.  The Trust shall not
borrow money, issue debt or reinvest proceeds derived from investments, mortgage
or pledge any of its assets, or otherwise undertake (or permit to be undertaken)
any activity that would cause the Trust not to be classified for United States
federal income tax purposes as a grantor trust.

SECTION 3.4    Authority.
               --------- 

     Subject to the limitations provided in this Declaration and to the specific
duties of the Property Trustee, the Administrative Trustees shall have exclusive
and complete authority to carry out the purposes of the Trust. An action taken
by the Administrative Trustees in accordance with their powers shall constitute
the act of and serve to bind the Trust and an action taken by the Property
Trustee on behalf of the Trust in accordance with its powers shall constitute
the act of and serve to bind the Trust. In dealing with the Trustees acting on
behalf of the Trust, no Person shall be required to inquire into the authority
of the Trustees to bind the Trust. Persons dealing with the Trust are entitled
to rely conclusively on the power and authority of the Trustees as set forth in
this Declaration.

SECTION 3.5    Title to Property of the Trust.
               ------------------------------ 

     Except as provided in Section 3.8 with respect to the Debentures and the
Property Trustee Account or as otherwise provided in this Declaration, legal
title to all assets of the Trust shall be vested in the Trust. The Holders shall
not have legal title to any part of the assets of the Trust, but shall have an
undivided beneficial interest in the assets of the Trust.

SECTION 3.6    Powers and Duties of the Administrative Trustees.
               ------------------------------------------------ 

     The Administrative Trustees shall have the exclusive power, duty and
authority to cause the Trust to engage in the following activities:

     (a)       to issue and sell the Capital Securities and (pursuant to the
Common Securities Subscription Agreement) the Common Securities in accordance
with this Declaration; provided, however, that except, in the case of (i) and
(ii), as contemplated in Section 7.1(a), (i) the Trust may issue no more than
one series of Capital Securities and no more than one series of Common
Securities, (ii) there shall be no interests in the Trust other than the
Securities, and (iii) the issuance of Securities shall be limited to a
simultaneous issuance of both Capital Securities and Common Securities at the
Closing Time;

                                     -10-
<PAGE>
 
     (b)       in connection with the issue and sale of the Capital Securities
and the consummation of the Exchange Offer, at the direction of the Sponsor, to:

          (i)       prepare and execute, if necessary, an offering memorandum
     (the "Offering Memorandum") in preliminary and final form prepared by the
     Sponsor, in relation to the offering and sale of Series A Capital
     Securities to qualified institutional buyers in reliance on Rule 144A under
     the Securities Act, and to institutional "accredited investors" (as defined
     in Rule 501(a)(1), (2), (3) or (7) under the Securities Act) and outside
     the United States to non-U.S. Persons in offshore transactions in reliance
     on Regulation S under the Securities Act, and to execute and file with the
     Commission, at such time as determined by the Sponsor, any Registration
     Statement, including any amendments thereto, as contemplated by the
     Registration Rights Agreement;

          (ii)      execute and file any documents prepared by the Sponsor, or
     take any acts as determined by the Sponsor to be necessary in order to
     qualify or register all or part of the Capital Securities in any State in
     which the Sponsor has determined to qualify or register such Capital
     Securities for sale;

          (iii)     at the direction of the Sponsor, execute and file an
     application, prepared by the Sponsor, to the New York Stock Exchange or any
     other national stock exchange or the Nasdaq Stock Market's National Market
     for listing or inclusion of the Capital Securities;

          (iv)      execute and deliver letters, documents, or instruments with
     DTC and other Clearing Agencies relating to the Capital Securities;

          (v)       if required, execute and file with the Commission a
     registration statement on Form 8-A, including any amendments thereto,
     prepared by the Sponsor, relating to the registration of the Capital
     Securities under Section 12(b) or 12(g) of the Exchange Act as the case may
     be; and

          (vi)      execute and enter into the Purchase Agreement and the
     Registration Rights Agreement providing for the sale of the Capital
     Securities and take any and all actions necessary, advisable or appropriate
     to satisfy the Trustee's obligations thereunder;

     (c)       to acquire the Series A Debentures with the proceeds of the sale
of the Series A Capital Securities and the Common Securities pursuant to the
Debenture Subscription Agreement between the Trust and the Debenture Issuer,
dated as of the Closing Time, and to exchange, or to direct the Property Trustee
in writing to exchange, the Series A Debentures for a like principal amount of
Series B Debentures, pursuant to the Exchange Offer; provided, however, that the
Administrative Trustees shall cause legal title to the Debentures to be held of
record in the name of the Property Trustee for the benefit of the Holders of the
Capital Securities and the Holders of Common Securities;

     (d)       to give the Sponsor and the Property Trustee prompt written
notice of the occurrence of a Special Event;

     (e)       to establish a record date with respect to all actions to be
taken hereunder that require a record date be established, including and with
respect to, for the purposes of (S) 316(c) of the Trust Indenture Act,
Distributions, voting rights, redemptions and exchanges, and to issue relevant
notices to the Holders of Capital Securities and Holders of Common Securities as
to such actions and applicable record dates;

     (f)       to take all actions and perform such duties as may be required of
the Administrative Trustees pursuant to the terms of the Securities;

     (g)       to bring or defend, pay, collect, compromise, arbitrate, resort
to legal action, or otherwise adjust claims or demands of or against the Trust
("Legal Action"), unless pursuant to Section 3.8(e), the Property Trustee has
the exclusive power to bring such Legal Action;

                                     -11-
<PAGE>
 
     (h)       to employ or otherwise engage employees and agents (who may be
designated as officers with titles) and managers, contractors, advisors, and
consultants and pay reasonable compensation for such services;

     (i)       to cause the Trust to comply with the Trust's obligations under
the Trust Indenture Act;

     (j)       to give the certificate required by (S) 314(a)(4) of the Trust
Indenture Act to the Property Trustee, which certificate may be executed by any
Administrative Trustee;

     (k)       to incur expenses that are necessary or incidental to carry out
any of the purposes of the Trust;

     (l)       to act as, or appoint another Person to act as, Registrar and
Exchange Agent for the Securities or to appoint a Paying Agent for the
Securities as provided in Section 7.4 except for such time as such power to
appoint a Paying Agent is vested in the Property Trustee;

     (m)       to give prompt written notice to the Property Trustee and to
Holders of the Securities of any notice received from the Debenture Issuer of
its election to defer payments of interest on the Debentures by extending the
interest payment period under the Indenture;

     (n)       to execute all documents or instruments, perform all duties and
powers, and do all things for and on behalf of the Trust in all matters
necessary or incidental to the foregoing;

     (o)       to take all action that may be necessary or appropriate for the
preservation and the continuation of the Trust's valid existence, rights,
franchises and privileges as a statutory business trust under the laws of the
State of Delaware and of each other jurisdiction in which such existence is
necessary to protect the limited liability of the Holders of the Capital
Securities or to enable the Trust to effect the purposes for which the Trust was
created;

     (p)       to take any action, not inconsistent with this Declaration or
with applicable law, that the Administrative Trustees determine in their
discretion to be necessary, advisable or incidental to carrying out the
activities of the Trust as set out in this Section 3.6, including, but not
limited to:

          (i)       causing the Trust not to be deemed to be an Investment
     Company required to be registered under the Investment Company Act;

          (ii)      causing the Trust to be classified for United States federal
     income tax purposes as a grantor trust; and

          (iii)     cooperating with the Debenture Issuer to ensure that the
     Debentures will be treated as indebtedness of the Debenture Issuer for
     United States federal income tax purposes;

     (q)       to take all action necessary to consummate the Exchange Offer or
otherwise cause the Capital Securities to be registered pursuant to an effective
registration statement in accordance with the provisions of the Registration
Rights Agreement; and

     (r)       to take all action necessary to cause all applicable tax returns
and tax information reports that are required to be filed with respect to the
Trust to be duly prepared and filed by the Administrative Trustees, on behalf of
the Trust.

     The Administrative Trustees must exercise the powers set forth in this
Section 3.6 in a manner that is consistent with the purposes and functions of
the Trust set out in Section 3.3, and the Administrative Trustees shall not take
any action that is inconsistent with the purposes and functions of the Trust set
forth in Section 3.3.

     Subject to this Section 3.6, the Administrative Trustees shall have none of
the powers or the authority of the Property Trustee set forth in Section 3.8.

                                     -12-
<PAGE>
 
     Any expenses incurred by the Administrative Trustees pursuant to this
Section 3.6 shall be reimbursed by the Debenture Issuer.

SECTION 3.7    Prohibition of Actions by the Trust and the Trustees.
               ---------------------------------------------------- 

     (a)       The Trust shall not, and the Trustees (including the Property
Trustee) shall not, engage in any activity other than as required or authorized
by this Declaration. The Trust shall not:

          (i)       invest any proceeds received by the Trust from holding the
     Debentures, but shall distribute all such proceeds to Holders of Securities
     pursuant to the terms of this Declaration and of the Securities;

          (ii)      acquire any assets other than as expressly provided herein;

          (iii)     possess Trust property for other than a Trust purpose;

          (iv)      make any loans or incur any indebtedness other than loans
     represented by the Debentures;

          (v)       possess any power or otherwise act in such a way as to vary
     the Trust assets or the terms of the Securities in any way whatsoever;

          (vi)      issue any securities or other evidences of beneficial
     ownership of, or beneficial interest in, the Trust other than the
     Securities; or

          (vii)     other than as provided in this Declaration or Annex I to
     this Declaration, (A) direct the time, method and place of conducting any
     proceeding with respect to any remedy available to the Debenture Trustee,
     or exercising any trust or power conferred upon the Debenture Trustee with
     respect to the Debentures, (B) waive any past default that is waivable
     under the Indenture, (C) exercise any right to rescind or annul any
     declaration that the principal of all the Debentures shall be due and
     payable, or (D) consent to any amendment, modification or termination of
     the Indenture or the Debentures where such consent shall be required unless
     the Trust shall have received an opinion of a nationally recognized
     independent tax counsel experienced in such matters to the effect that such
     amendment, modification or termination will not cause more than an
     insubstantial risk that for United States federal income tax purposes the
     Trust will not be classified as a grantor trust.

SECTION 3.8    Powers and Duties of the Property Trustee.
               ----------------------------------------- 

     (a)       The legal title to the Debentures shall be owned by and held of
record in the name of the Property Trustee in trust for the benefit of the
Holders of the Securities. The right, title and interest of the Property Trustee
to the Debentures shall vest automatically in each Person who may hereafter be
appointed as Property Trustee in accordance with Section 5.6. Such vesting and
cessation of title shall be effective whether or not conveyancing documents with
regard to the Debentures have been executed and delivered.

     (b)       The Property Trustee shall not transfer its right, title and
interest in the Debentures to the Administrative Trustees or to the Delaware
Trustee (if the Property Trustee does not also act as Delaware Trustee).

     (c)       The Property Trustee shall:

          (i)       establish and maintain a segregated non-interest bearing
     trust account (the "Property Trustee Account") in the name of and under the
     exclusive control of the Property Trustee on behalf of the Holders of the
     Securities and, upon the receipt of payments of funds made in respect of
     the Debentures held by the Property Trustee, deposit such funds into the
     Property Trustee Account and make payments to the Holders of the Capital
     Securities and Holders of the Common Securities from the Property Trustee
     Account in accordance with Section 6.1. Funds in the Property Trustee
     Account shall be held uninvested until disbursed in accordance with this
     Declaration. The Property Trustee Account shall be an account that is
     maintained with a banking institution the 

                                     -13-
<PAGE>
 
     rating on whose long-term unsecured indebtedness is at least equal to the
     rating assigned to the Capital Securities by a "nationally recognized
     statistical rating organization", as that term is defined for purposes of
     Rule 436(g)(2) under the Securities Act;

          (ii)      engage in such ministerial activities as shall be necessary
     or appropriate to effect the redemption of the Capital Securities and the
     Common Securities to the extent the Debentures are redeemed or mature; and

          (iii)     upon written notice of distribution issued by the
     Administrative Trustees in accordance with the terms of the Securities,
     engage in such ministerial activities as shall be necessary or appropriate
     to effect the distribution of the Debentures to Holders of Securities upon
     the occurrence of certain events.

     (d)       The Property Trustee shall take all actions and perform such
duties as may be specifically required of the Property Trustee pursuant to the
terms of this Declaration and the Securities.

     (e)       Subject to Section 3.9(a), the Property Trustee shall take any
Legal Action which arises out of or in connection with an Event of Default of
which a Responsible Officer of the Property Trustee has actual knowledge or the
Property Trustee's duties and obligations under this Declaration or the Trust
Indenture Act and if the Property Trustee shall have failed to take such Legal
Action, the Holders of the Capital Securities may take such Legal Action, to the
same extent as if such Holders of Capital Securities held an aggregate principal
amount of Debentures equal to the aggregate liquidation amount of such Capital
Securities, without first proceeding against the Property Trustee or the Trust;
provided however, that if an Event of Default has occurred and is continuing and
such event is attributable to the failure of the Debenture Issuer to pay the
principal of or premium, if any, or interest on the Debentures on the date such
principal, premium, if any, or interest is otherwise payable (or in the case of
redemption, on the redemption date), then a Holder of Capital Securities may
directly institute a proceeding for enforcement of payment to such Holder of the
principal of or premium, if any, or interest on the Debentures having a
principal amount equal to the aggregate liquidation amount of the Capital
Securities of such Holder (a "Direct Action") on or after the respective due
date specified in the Debentures. In connection with such Direct Action, the
rights of the Holders of the Common Securities will be subrogated to the rights
of such Holder of Capital Securities to the extent of any payment made by the
Debenture Issuer to such Holder of Capital Securities in such Direct Action.
Except as provided in the preceding sentences, the Holders of Capital Securities
will not be able to exercise directly any other remedy available to the holders
of the Debentures.

     (f)       The Property Trustee shall not resign as a Trustee unless either:

          (i)       the Trust has been completely liquidated and the proceeds of
     the liquidation distributed to the Holders of Securities pursuant to the
     terms of the Securities; or

          (ii)      a successor Property Trustee possessing the qualifications
     to act as Property Trustee under Section 5.3 (a "Successor Property
     Trustee") has been appointed and has accepted that appointment in
     accordance with Section 5.6(b).

     (g)       The Property Trustee shall have the legal power to exercise all
of the rights, powers and privileges of a holder of Debentures under the
Indenture and, if an Event of Default actually known to a Responsible Officer of
the Property Trustee occurs and is continuing, the Property Trustee shall, for
the benefit of Holders of the Securities, enforce its rights as holder of the
Debentures subject to the rights of the Holders pursuant to the terms of this
Declaration and the Securities.

     (h)       The Property Trustee shall be authorized to undertake any actions
set forth in (S)317(a) of the Trust Indenture Act.

     (i)       For such time as the Property Trustee is the Paying Agent, the
Property Trustee may authorize one or more Persons to act as additional Paying
Agents and to pay Distributions, redemption payments or liquidation payments on
behalf of the Trust with respect to all Securities and any such Paying Agent
shall comply with (S) 317(b) of the Trust 

                                     -14-
<PAGE>
 
Indenture Act. Any such additional Paying Agent may be removed by the Property
Trustee at any time the Property Trustee remains as Paying Agent and a successor
Paying Agent or additional Paying Agents may be (but are not required to be)
appointed at any time by the Property Trustee.

     (j)       Subject to this Section 3.8, the Property Trustee shall have none
of the duties, liabilities, powers or the authority of the Administrative
Trustees set forth in Section 3.6.

     The Property Trustee must exercise the powers set forth in this Section 3.8
in a manner that is consistent with the purposes and functions of the Trust set
out in Section 3.3, and the Property Trustee shall not take any action that is
inconsistent with the purposes and functions of the Trust set out in Section
3.3.

SECTION 3.9    Certain Duties and Responsibilities of the Property Trustee.
               ----------------------------------------------------------- 

     (a)       The Property Trustee, before the occurrence of any Event of
Default and after the curing or waiving of all Events of Default that may have
occurred, shall undertake to perform only such duties as are specifically set
forth in this Declaration and in the Securities and no implied covenants shall
be read into this Declaration against the Property Trustee. In case an Event of
Default has occurred (that has not been cured or waived pursuant to Section 2.6)
of which a Responsible Officer of the Property Trustee has actual knowledge, the
Property Trustee shall exercise such of the rights and powers vested in it by
this Declaration, and use the same degree of care and skill in their exercise,
as a prudent person would exercise or use under the circumstances in the conduct
of his or her own affairs.

     (b)       No provision of this Declaration shall be construed to relieve
the Property Trustee from liability for its own negligent action, its own
negligent failure to act, or its own willful misconduct, except that:

          (i)       prior to the occurrence of an Event of Default and after the
     curing or waiving of all such Events of Default that may have occurred:

          (A)       the duties and obligations of the Property Trustee shall be
          determined solely by the express provisions of this Declaration and in
          the Securities and the Property Trustee shall not be liable except for
          the performance of such duties and obligations as are specifically set
          forth in this Declaration and in the Securities, and no implied
          covenants or obligations shall be read into this Declaration against
          the Property Trustee; and

          (B)       in the absence of bad faith on the part of the Property
          Trustee, the Property Trustee may conclusively rely, as to the truth
          of the statements and the correctness of the opinions expressed
          therein, upon any certificates or opinions furnished to the Property
          Trustee and conforming to the requirements of this Declaration;
          provided, however, that in the case of any such certificates or
          opinions that by any provision hereof are specifically required to be
          furnished to the Property Trustee, the Property Trustee shall be under
          a duty to examine the same to determine whether or not they conform to
          the requirements of this Declaration;

          (ii)      the Property Trustee shall not be liable for any error of
     judgment made in good faith by a Responsible Officer of the Property
     Trustee, unless it shall be proved that the Property Trustee was negligent
     in ascertaining the pertinent facts;

          (iii)     the Property Trustee shall not be liable with respect to any
     action taken or omitted to be taken by it in good faith in accordance with
     the direction of the Holders of not less than a Majority in liquidation
     amount of the Securities relating to the time, method and place of
     conducting any proceeding for any remedy available to the Property Trustee,
     or exercising any trust or power conferred upon the Property Trustee under
     this Declaration;

          (iv)      no provision of this Declaration shall require the Property
     Trustee to expend or risk its own funds or otherwise incur personal
     financial liability in the performance of any of its duties or in the
     exercise of 

                                     -15-
<PAGE>
 
     any of its rights or powers, if it shall have reasonable grounds for
     believing that the repayment of such funds or liability is not reasonably
     assured to it under the terms of this Declaration or indemnity reasonably
     satisfactory to the Property Trustee against such risk or liability is not
     reasonably assured to it;

          (v)       the Property Trustee's sole duty with respect to the
     custody, safe keeping and physical preservation of the Debentures and the
     Property Trustee Account shall be to deal with such property in a similar
     manner as the Property Trustee deals with similar property for its own
     account, subject to the protections and limitations on liability afforded
     to the Property Trustee under this Declaration and the Trust Indenture Act;

          (vi)      the Property Trustee shall have no duty or liability for or
     with respect to the value, genuineness, existence or sufficiency of the
     Debentures or the payment of any taxes or assessments levied thereon or in
     connection therewith;

          (vii)     the Property Trustee shall not be liable for any interest on
     any money received by it except as it may otherwise agree in writing with
     the Sponsor. Money held by the Property Trustee need not be segregated from
     other funds held by it except in relation to the Property Trustee Account
     maintained by the Property Trustee pursuant to Section 3.8(c)(i) and except
     to the extent otherwise required by law; and

          (viii)    the Property Trustee shall not be responsible for monitoring
     the compliance by the Administrative Trustees or the Sponsor with their
     respective duties under this Declaration, nor shall the Property Trustee be
     liable for any default or misconduct of the Administrative Trustees or the
     Sponsor.

SECTION 3.10   Certain Rights of Property Trustee.
               ---------------------------------- 

     (a)       Subject to the provisions of Section 3.9:

          (i)       the Property Trustee may conclusively rely and shall be
     fully protected in acting or refraining from acting upon any resolution,
     certificate, statement, instrument, opinion, report, notice, request,
     direction, consent, order, bond, debenture, note, other evidence of
     indebtedness or other paper or document believed by it to be genuine and to
     have been signed, sent or presented by the proper party or parties;

          (ii)      any direction or act of the Sponsor or the Administrative
     Trustees contemplated by this Declaration may be sufficiently evidenced by
     an Officers' Certificate;

          (iii)     whenever in the administration of this Declaration, the
     Property Trustee shall deem it desirable that a matter be proved or
     established before taking, suffering or omitting any action hereunder, the
     Property Trustee (unless other evidence is herein specifically prescribed)
     may, in the absence of bad faith on its part, request and conclusively rely
     upon an Officers' Certificate which, upon receipt of such request, shall be
     promptly delivered by the Sponsor or the Administrative Trustees;

          (iv)      the Property Trustee shall have no duty to see to any
     recording, filing or registration of any instrument (including any
     financing or continuation statement or any filing under tax or securities
     laws) or any rerecording, refiling or registration thereof;

          (v)       the Property Trustee may consult with counsel or other
     experts of its selection and the advice or opinion of such counsel and
     experts with respect to legal matters or advice within the scope of such
     experts' area of expertise shall be full and complete authorization and
     protection in respect of any action taken, suffered or omitted by it
     hereunder in good faith and in accordance with such advice or opinion, such
     counsel may be counsel to the Sponsor or any of its Affiliates, and may
     include any of its employees, and the Property Trustee shall have the right
     at any time to seek instructions concerning the administration of this
     Declaration from any court of competent jurisdiction;

                                     -16-
<PAGE>
 
          (vi)      the Property Trustee shall be under no obligation to
     exercise any of the rights or powers vested in it by this Declaration at
     the request or direction of any Holder, unless such Holder shall have
     provided to the Property Trustee security and indemnity, reasonably
     satisfactory to the Property Trustee, against the costs, expenses
     (including reasonable attorneys' fees and expenses and the expenses of the
     Property Trustee's agents, nominees or custodians) and liabilities that
     might be incurred by it in complying with such request or direction,
     including such reasonable advances as may be requested by the Property
     Trustee; provided that, nothing contained in this Section 3.10(a)(vi) shall
     be taken to relieve the Property Trustee, upon the occurrence of an Event
     of Default, of its obligation to exercise the rights and powers vested in
     it by this Declaration;

          (vii)     the Property Trustee shall not be bound to make any
     investigation into the facts or matters stated in any resolution,
     certificate, statement, instrument, opinion, report, notice, request,
     direction, consent, order, bond, debenture, note, other evidence of
     indebtedness or other paper or document, but the Property Trustee, in its
     discretion, may make such further inquiry or investigation into such facts
     or matters as it may see fit;

          (viii)    the Property Trustee may execute any of the trusts or powers
     hereunder or perform any duties hereunder either directly or by or through
     agents, custodians, nominees or attorneys and the Property Trustee shall
     not be responsible for any misconduct or negligence on the part of any
     agent or attorney appointed with due care by it hereunder;

          (ix)      any action taken by the Property Trustee or its agents
     hereunder shall bind the Trust and the Holders of the Securities, and the
     signature of the Property Trustee or its agents alone shall be sufficient
     and effective to perform any such action and no third party shall be
     required to inquire as to the authority of the Property Trustee to so act
     or as to its compliance with any of the terms and provisions of this
     Declaration, both of which shall be conclusively evidenced by the Property
     Trustee's or its agent's taking such action;

          (x)       whenever in the administration of this Declaration the
     Property Trustee shall deem it desirable to receive instructions with
     respect to enforcing any remedy or right or taking any other action
     hereunder, the Property Trustee (i) may request instructions from the
     Holders of the Securities which instructions may only be given by the
     Holders of the same proportion in liquidation amount of the Securities as
     would be entitled to direct the Property Trustee under the terms of the
     Securities in respect of such remedy, right or action, (ii) may refrain
     from enforcing such remedy or right or taking such other action until such
     instructions are received and (iii) shall be protected in conclusively
     relying on or acting in or accordance with such instructions;

          (xi)      except as otherwise expressly provided by this Declaration,
     the Property Trustee shall not be under any obligation to take any action
     that is discretionary under the provisions of this Declaration; and

          (xii)     the Property Trustee shall not be liable for any action
     taken, suffered, or omitted to be taken by it in good faith, without
     negligence or willful misconduct, and reasonably believed by it to be
     authorized or within the discretion or rights or powers conferred upon it
     by this Declaration.

     (b)       No provision of this Declaration shall be deemed to impose any
duty or obligation on the Property Trustee to perform any act or acts or
exercise any right, power, duty or obligation conferred or imposed on it, in any
jurisdiction in which it shall be illegal, or in which the Property Trustee
shall be unqualified or incompetent in accordance with applicable law, to
perform any such act or acts, or to exercise any such right, power, duty or
obligation. No permissive power or authority available to the Property Trustee
shall be construed to be a duty.

SECTION 3.11   Delaware Trustee.
               ---------------- 

     Notwithstanding any other provision of this Declaration other than Section
5.2, the Delaware Trustee shall not be entitled to exercise any powers, nor
shall the Delaware Trustee have any of the duties and responsibilities of the
Administrative Trustees or the Property Trustee described in this Declaration.
Except as set forth in Section 5.2, the 

                                     -17-
<PAGE>
 
Delaware Trustee shall be a Trustee for the sole and limited purpose of
fulfilling the requirements of (S) 3807 of the Business Trust Act and taking
such actions contemplated thereby.

SECTION 3.12   Execution of Documents.
               ---------------------- 

     Unless otherwise determined by the Administrative Trustees, and except as
otherwise required by the Business Trust Act, any Administrative Trustee is
authorized to execute on behalf of the Trust any documents that the
Administrative Trustees have the power and authority to execute pursuant to
Section 3.6; provided that, the Registration Statement referred to in Section
3.6(b)(i), including any amendments thereto, shall be signed by all of the
Administrative Trustees.

SECTION 3.13   Not Responsible for Recitals or Issuance of Securities.
               ------------------------------------------------------ 

     The recitals contained in this Declaration and the Securities shall be
taken as the statements of the Sponsor, and the Trustees do not assume any
responsibility for their correctness. The Trustees make no representations as to
the value or condition of the property of the Trust or any part thereof. The
Trustees make no representations as to the validity or sufficiency of this
Declaration or the Securities.

SECTION 3.14   Duration of Trust.
               ----------------- 

     The Trust, unless terminated pursuant to the provisions of Article VIII
hereof, shall have existence up to January 15, 2028.

SECTION 3.15   Mergers.
               ------- 

     (a)       The Trust may not merge with or into, consolidate, amalgamate, or
be replaced by, or convey, transfer or lease its properties and assets
substantially as an entirety to any Person, except as described in Section
3.15(b) and (c).

     (b)       The Trust may, at the request of the Sponsor, with the consent of
the Administrative Trustees or, if there are more than two, a majority of the
Administrative Trustees and without the consent of the Holders of the
Securities, the Delaware Trustee or the Property Trustee, merge with or into,
consolidate, amalgamate or be replaced by, or convey, transfer or lease its
properties and assets as an entirety or substantially as an entirety to, a trust
organized as such under the laws of any State; provided that:

          (i)       such successor entity (the "Successor Entity") either:

               (A)  expressly assumes all of the obligations of the Trust under
the Securities; or

               (B)  substitutes for the Securities other securities having
          substantially the same terms as the Securities (the "Successor
          Securities") so long as the Successor Securities rank the same as the
          Securities rank with respect to Distributions and payments upon
          liquidation, redemption and otherwise;

          (ii)      the Sponsor expressly appoints a trustee of the Successor
     Entity that possesses the same powers and duties as the Property Trustee as
     the holder of the Debentures;

          (iii)     the Successor Securities are listed or included for trading,
     or any Successor Securities will be listed or included for trading upon
     notification of issuance, on any national securities exchange or with
     another organization on which the Capital Securities are then listed or
     included;

                                     -18-
<PAGE>
 
          (iv)      such merger, consolidation, amalgamation, replacement,
     conveyance, transfer or lease does not cause the Capital Securities
     (including any Successor Securities) to be downgraded by any nationally
     recognized statistical rating organization, if then rated;

          (v)       such merger, consolidation, amalgamation, replacement,
     conveyance, transfer or lease does not adversely affect the rights,
     preferences and privileges of the Holders of the Securities (including any
     Successor Securities) in any material respect (other than with respect to
     any dilution of such Holders' interests in the new entity);

          (vi)      such Successor Entity has a purpose identical to that of the
     Trust;

          (vii)     prior to such merger, consolidation, amalgamation,
     replacement, conveyance, transfer or lease, the Sponsor has received an
     opinion of an independent counsel to the Trust experienced in such matters
     to the effect that:

          (A)       such merger, consolidation, amalgamation, replacement,
          conveyance, transfer or lease does not adversely affect the rights,
          preferences and privileges of the Holders of the Securities (including
          any Successor Securities) in any material respect (other than with
          respect to any dilution of the Holders' interest in the new entity);
          and

          (B)       following such merger, consolidation, amalgamation,
          replacement, conveyance, transfer or lease, neither the Trust nor the
          Successor Entity will be required to register as an Investment
          Company; and

the Sponsor or any permitted successor or assignee owns all of the common
securities of such Successor Entity and guarantees the obligations of such
Successor Entity under the Successor Securities at least to the extent provided
by the Capital Securities Guarantee and the Common Securities Guarantee.

     (c)  Notwithstanding Section 3.15(b), the Trust shall not, except with the
consent of Holders of 100% in liquidation amount of the Securities, consolidate,
amalgamate, merge with or into, or be replaced by, or convey, transfer or lease
its properties and assets as an entirety or substantially as an entirety to, any
other Person or permit any other Person to consolidate, amalgamate, merge with
or into, or replace it if such consolidation, amalgamation, merger, replacement,
conveyance, transfer or lease would cause the Trust or the Successor Entity not
to be classified as a grantor trust for United States federal income tax
purposes.

                                  ARTICLE IV
                                    SPONSOR

SECTION 4.1    Sponsor's Purchase of Common Securities.
               --------------------------------------- 

     At the Closing Time, pursuant to the Common Securities Subscription
Agreement, the Sponsor will purchase all of the Common Securities then issued by
the Trust, in an amount at least equal to 3% of the capital of the Trust, at the
same time as the Series A Capital Securities are issued and sold.

SECTION 4.2    Responsibilities of the Sponsor.
               ------------------------------- 

     In connection with the issue and sale of the Capital Securities, the
Sponsor shall have the exclusive right and responsibility to engage in the
following activities:

     (a)       to prepare the Offering Memorandum and to prepare for filing by
the Trust with the Commission any Registration Statement, including any
amendments thereto as contemplated by the Registration Rights Agreement;

                                     -19-
<PAGE>
 
     (b)       to determine the States in which to take appropriate action to
qualify or register for sale all or part of the Capital Securities and to do any
and all such acts, other than actions which must be taken by the Trust, and
advise the Trust of actions it must take, and prepare for execution and filing
any documents to be executed and filed by the Trust, as the Sponsor deems
necessary or advisable in order to comply with the applicable laws of any such
States;

     (c)       if deemed necessary or advisable by the Sponsor, to prepare for
filing by the Trust an application to the New York Stock Exchange or any other
national stock exchange or the Nasdaq National Market for listing or inclusion
of the Capital Securities;

     (d)       if deemed necessary or advisable by the Sponsor, to prepare for
filing by the Trust with the Commission a registration statement on Form 8-A
relating to the registration of the Capital Securities under Section 12(b) or
12(g) of the Exchange Act, as the case may be, including any amendments thereto;
and

     (e)       to negotiate the terms of the Purchase Agreement and the
Registration Rights Agreement providing for the sale of the Capital Securities.

SECTION 4.3    Right to Proceed.
               ---------------- 

     The Sponsor acknowledges the rights of the Holders of Capital Securities,
in the event that a failure of the Trust to pay Distributions on the Capital
Securities is attributable to the failure of the Company to pay interest or
principal on the Debentures, to institute a proceeding directly against the
Debenture Issuer for enforcement of its payment obligations on the Debentures.

                                   ARTICLE V
                                   TRUSTEES

SECTION 5.1    Number of Trustees: Appointment of Co-Trustee.
               --------------------------------------------- 

     The number of Trustees initially shall be five (5), and:

     (a)       at any time before the issuance of any Securities, the Sponsor
may, by written instrument, increase or decrease the number of Trustees; and

     (b)       after the issuance of any Securities, the number of Trustees may
be increased or decreased by vote of the Holders of a Majority in liquidation
amount of the Common Securities voting as a class at a meeting of the Holders of
the Common Securities;

provided, however, that, the number of Trustees shall in no event be less than
- --------  -------                                                             
two (2); provided further that (1) one Trustee shall be the Delaware Trustee;
(2) there shall be at least one Trustee who is an employee or officer of, or is
affiliated with the Sponsor (an "Administrative Trustee"); and (3) one Trustee
shall be the Property Trustee for so long as this Declaration is required to
qualify as an indenture under the Trust Indenture Act, and such Trustee may also
serve as Delaware Trustee if it meets the applicable requirements.
Notwithstanding the above, unless an Event of Default shall have occurred and be
continuing, at any time or times, for the purpose of meeting the legal
requirements of the Trust Indenture Act or of any jurisdiction in which any part
of the Trust's property may at the time be located, the Holders of a Majority in
liquidation amount of the Common Securities acting as a class at a meeting of
the Holders of the Common Securities, and the Administrative Trustees shall have
power to appoint one or more Persons either to act as a co-trustee, jointly with
the Property Trustee, of all or any part of the Trust's property, or to act as
separate trustee of any such property, in either case with such powers as may be
provided in the instrument of appointment, and to vest in such Person or Persons
in such capacity any property, title, right or power deemed necessary or
desirable, subject to the provisions of this Declaration. In case an Event of
Default has occurred and is continuing, the Property Trustee alone shall have
power to make any such appointment of a co-trustee.

                                     -20-
<PAGE>
 
SECTION 5.2    Delaware Trustee.
               ---------------- 

     For so long as required by the Business Trust Act, one Trustee (the
"Delaware Trustee") shall be:

     (a)       a natural person who is a resident of the State of Delaware; or

     (b)       if not a natural person, an entity which has its principal place
of business in the State of Delaware, and otherwise meets the requirements of
applicable law,

provided that, if the Property Trustee has its principal place of business in
- -------- ----                                                                
the State of Delaware and otherwise meets the requirements of applicable law,
then the Property Trustee shall also be the Delaware Trustee and Section 3.11
shall have no application.

     The initial Delaware Trustee shall be:

     The Bank of New York (Delaware)
     White Clay Center
     Route 273
     Newark, Delaware 19711

SECTION 5.3    Property Trustee: Eligibility.
               ----------------------------- 

     (a)       There shall at all times be one Trustee (the "Property Trustee")
which shall act as Property Trustee which shall:

          (i)       not be an Affiliate of the Sponsor; and

          (ii)      be a corporation organized and doing business under the laws
     of the United States of America or any State or Territory thereof or of the
     District of Columbia, or a corporation or other Person permitted by the
     Commission to act as an institutional trustee under the Trust Indenture
     Act, authorized under such laws to exercise corporate trust powers, having
     a combined capital and surplus of at least 50 million U.S. dollars
     ($50,000,000), and subject to supervision or examination by Federal, State,
     Territorial or District of Columbia authority. If such corporation
     publishes reports of condition at least annually, pursuant to law or to the
     requirements of the supervising or examining authority referred to above,
     then for the purposes of this Section 5.3(a)(ii), the combined capital and
     surplus of such corporation shall be deemed to be its combined capital and
     surplus as set forth in its most recent report of condition so published.

     (b)       If at any time the Property Trustee shall cease to be eligible to
so act under Section 5.3(a), the Property Trustee shall immediately resign in
the manner and with the effect set forth in Section 5.6(c).

     (c)       If the Property Trustee has or shall acquire any "conflicting
interest" within the meaning of (S)310(b) of the Trust Indenture Act, the
Property Trustee and the Holder of the Common Securities (as if it were the
obligor referred to in (S) 310(b) of the Trust Indenture Act) shall in all
respects comply with the provisions of (S) 310(b) of the Trust Indenture Act.

     (d)       The Capital Securities Guarantee shall be deemed to be
specifically described in this Declaration for purposes of clause (i) of the
proviso contained in paragraph (1) of (S) 310(b) of the Trust Indenture Act.

                                     -21-
<PAGE>
 
     (e)       The initial Property Trustee shall be:

               The Bank of New York
               101 Barclay Street, Floor 21 West
               New York, New York 10286
               Attention:  Corporate Trust Administration

SECTION 5.4    Certain Qualifications of Administrative Trustees and Delaware
               --------------------------------------------------------------
     Trustee Generally.
     ----------------- 

     Each Administrative Trustee and the Delaware Trustee (unless the Property
Trustee also acts as Delaware Trustee) shall be either a natural person who is
at least 21 years of age or a legal entity that shall act through one or more
Authorized Officers.

SECTION 5.5    Administrative Trustees.
               ----------------------- 

     (a)       The initial Administrative Trustees shall be:

                    David E. Rainbolt
                    Joe T. Shockley, Jr.
                    Randy P. Foraker

     (b)       Except as expressly set forth in this Declaration and except if a
meeting of the Administrative Trustees is called with respect to any matter over
which the Administrative Trustees have power to act, any power of the
Administrative Trustees may be exercised by, or with the consent of, any one
such Administrative Trustee.

     (c)       Unless otherwise determined by the Administrative Trustees, and
except as otherwise required by the Business Trust Act or applicable law, any
Administrative Trustee is authorized to execute on behalf of the Trust any
documents which the Administrative Trustees have the power and authority to
cause the Trust to execute pursuant to Section 3.6, provided that, the
Registration Statement referred to in Section 3.6, including any amendments
thereto, shall be signed by all of the Administrative Trustees.

     (d)       An Administrative Trustee may, by power of attorney consistent
with applicable law, delegate to any other natural person over the age of 21 his
or her power for the purposes of signing any documents which the Administrative
Trustees have power and authority to cause the Trust to execute pursuant to
Section 3.6.

SECTION 5.6    Appointment, Removal and Resignation of Trustees.
               ------------------------------------------------ 

     (a)       Subject to Section 5.6(b), Trustees may be appointed or removed
without cause at any time:

          (i)       until the issuance of any Securities, by written instrument
executed by the Sponsor;

          (ii)      unless an Event of Default shall have occurred and be
     continuing after the issuance of any Securities, by vote of the Holders of
     a Majority in liquidation amount of the Common Securities voting as a class
     at a meeting of the Holders of the Common Securities; and

          (iii)     if an Event of Default shall have occurred and be continuing
     after the issuance of the Securities, with respect to the Property Trustee
     or the Delaware Trustee, by vote of Holders of a Majority in liquidation
     amount of the Capital Securities voting as a class at a meeting of Holders
     of the Capital Securities.

     (b)  (i)       The Trustee that acts as Property Trustee shall not be
removed in accordance with Section 5.6(a) until a Successor Property Trustee has
been appointed and has accepted such appointment by written instrument executed
by such Successor Property Trustee and delivered to the removed Property
Trustees, the Administrative Trustees and the Sponsor; and

                                     -22-
<PAGE>
 
          (ii)      the Trustee that acts as Delaware Trustee shall not be
     removed in accordance with this Section 5.6 until a successor Trustee
     possessing the qualifications to act as Delaware Trustee under Sections 5.2
     and 5.4 (a "Successor Delaware Trustee") has been appointed and has
     accepted such appointment by written instrument executed by such Successor
     Delaware Trustee and delivered to the removed Delaware Trustee, the
     Administrative Trustees and the Sponsor.

     (c)       A Trustee appointed to office shall hold office until his
successor shall have been appointed or until his death, removal or resignation.
Any Trustee may resign from office (without need for prior or subsequent
accounting) by an instrument in writing signed by the Trustee and delivered to
the Sponsor and the Trust, which resignation shall take effect upon such
delivery or upon such later date as is specified therein; provided, however,
that:

          (i)       No such resignation of the Trustee that acts as the Property
     Trustee shall be effective:

          (A)       until a Successor Property Trustee has been appointed and
          has accepted such appointment by instrument executed by such Successor
          Property Trustee and delivered to the Trust, the Sponsor and the
          resigning Property Trustee; or

          (B)       until the assets of the Trust have been completely
          liquidated and the proceeds thereof distributed to the Holders of the
          Securities; and

          (ii)      no such resignation of the Trustee that acts as the Delaware
     Trustee shall be effective until a Successor Delaware Trustee has been
     appointed and has accepted such appointment by instrument executed by such
     Successor Delaware Trustee and delivered to the Trust, the Sponsor and the
     resigning Delaware Trustee.

     (d)       The Holders of the Common Securities shall use their best efforts
to promptly appoint a Successor Delaware Trustee or Successor Property Trustee,
as the case may be, if the Property Trustee or the Delaware Trustee delivers an
instrument of resignation in accordance with this Section 5.6.

     (e)       If no Successor Property Trustee or Successor Delaware Trustee
shall have been appointed and accepted appointment as provided in this Section
5.6 within 60 days after delivery of an instrument of resignation or removal,
the Property Trustee or Delaware Trustee resigning or being removed, as
applicable, may petition any court of competent jurisdiction for appointment of
a Successor Property Trustee or Successor Delaware Trustee. Such court may
thereupon, after prescribing such notice, if any, as it may deem proper and
prescribe, appoint a Successor Property Trustee or Successor Delaware Trustee,
as the case may be.

     (f)       No Property Trustee or Delaware Trustee shall be liable for the
acts or omissions to act of any Successor Property Trustee or successor Delaware
Trustee, as the case may be.

SECTION 5.7    Vacancies among Trustees.
               ------------------------ 

     If a Trustee ceases to hold office for any reason and the number of
Trustees is not reduced pursuant to Section 5.1, or if the number of Trustees is
increased pursuant to Section 5.1, a vacancy shall occur. A resolution
certifying the existence of such vacancy by the Administrative Trustees or, if
there are more than two, a majority of the Administrative Trustees shall be
conclusive evidence of the existence of such vacancy. The vacancy shall be
filled with a Trustee appointed in accordance with Section 5.6.

SECTION 5.8    Effect of Vacancies.
               ------------------- 

     The death, resignation, retirement, removal, bankruptcy, dissolution,
liquidation, incompetence or incapacity to perform the duties of a Trustee shall
not operate to annul the Trust. Whenever a vacancy in the number of
Administrative Trustees shall occur, until such vacancy is filled by the
appointment of an Administrative Trustee in accordance with Section 5.6, the
Administrative Trustees in office, regardless of their number, shall have all
the powers

                                     -23-
<PAGE>
 
granted to the Administrative Trustees and shall discharge all the duties
imposed upon the Administrative Trustees by this Declaration.

SECTION 5.9    Meetings.
               -------- 

     If there is more than one Administrative Trustee, meetings of the
Administrative Trustees shall be held from time to time upon the call of any
Administrative Trustee. Regular meetings of the Administrative Trustees may be
held at a time and place fixed by resolution of the Administrative Trustees.
Notice of any in-person meetings of the Administrative Trustees shall be hand
delivered or otherwise delivered in writing (including by facsimile, with a hard
copy by overnight courier) not less than 24 hours before such meeting. Notice of
any telephonic meetings of the Administrative Trustees or any committee thereof
shall be hand delivered or otherwise delivered in writing (including by
facsimile, with a hard copy by overnight courier) not less than 24 hours before
a meeting. Notices shall contain a brief statement of the time, place and
anticipated purposes of the meeting. The presence (whether in person or by
telephone) of an Administrative Trustee at a meeting shall constitute a waiver
of notice of such meeting except where an Administrative Trustee attends a
meeting for the express purpose of objecting to the transaction of any activity
on the ground that the meeting has not been lawfully called or convened. Unless
provided otherwise in this Declaration, any action of the Administrative
Trustees may be taken at a meeting by vote of a majority of the Administrative
Trustees present (whether in person or by telephone) and eligible to vote with
respect to such matter, provided that a Quorum is present, or without a meeting
by the unanimous written consent of the Administrative Trustees. In the event
there is only one Administrative Trustee, any and all action of such
Administrative Trustee shall be evidenced by a written consent of such
Administrative Trustee.

SECTION 5.10   Delegation of Power.
               ------------------- 

     (a)       Any Administrative Trustee may, by power of attorney to the
extent permitted by applicable law, delegate to any other natural person over
the age of 21 his or her power for the purpose of executing any documents
contemplated in Section 3.6, including any registration statement or amendment
thereto filed with the Commission, or making any other governmental filing; and

     (b)       the Administrative Trustees shall have power to delegate from
time to time to such of their number or to officers of the Trust the doing of
such things and the execution of such instruments either in the name of the
Trust or the names of the Administrative Trustees or otherwise as the
Administrative Trustees may deem expedient, to the extent such delegation is not
prohibited by applicable law or contrary to the provisions of the Trust, as set
forth herein.

SECTION 5.11   Merger, Conversion, Consolidation or Succession to Business.
               ----------------------------------------------------------- 

     Any corporation into which the Property Trustee or the Delaware Trustee or
any Administrative Trustee that is not a natural person, as the case may be, may
be merged or converted or with which it may be consolidated, or any corporation
resulting from any merger, conversion or consolidation to which the Property
Trustee or the Delaware Trustee, as the case may be, shall be a party, or any
corporation succeeding to all or substantially all the corporate trust business
of the Property Trustee or the Delaware Trustee, as the case may be, shall be
the successor of the Property Trustee or the Delaware Trustee, as the case may
be, hereunder, provided such corporation shall be otherwise qualified and
eligible under this Article V, without the execution or filing of any paper or
any further act on the part of any of the parties hereto.

                                     -24-
<PAGE>
 
                                  ARTICLE VI
                                 DISTRIBUTIONS

SECTION 6.1    Distributions.
               ------------- 

     Holders shall receive Distributions in accordance with the applicable terms
of the relevant Holder's Securities. If and to the extent that the Debenture
Issuer makes a payment of interest (including Compounded Interest (as defined in
the Indenture) and Additional Interest (as defined in the Indenture)), premium
and/or principal on the Debentures held by the Property Trustee or Liquidated
Damages (as defined in the Registration Rights Agreement) or any other payments
pursuant to the Registration Rights Agreement with respect to the Debentures
held by the Property Trustee (the amount of any such payment being a "Payment
Amount"), the Property Trustee shall and is directed, to the extent funds are
available for that purpose, to make a distribution (a "Distribution") of the
Payment Amount to Holders of Securities in accordance with the terms thereof.

                                  ARTICLE VII
                            ISSUANCE OF SECURITIES

SECTION 7.1    General Provisions Regarding Securities.
               --------------------------------------- 

     (a)       The Administrative Trustees shall on behalf of the Trust issue
one class of capital securities representing undivided beneficial interests in
the assets of the Trust having such terms as are set forth in Annex I (the
"Series A Capital Securities") and one class of common securities representing
undivided beneficial interests in the assets of the Trust having such terms as
are set forth in Annex I (the "Common Securities"), which is incorporated in and
expressly made a part of this Declaration. The Administrative Trustees shall on
behalf of the Trust issue one class of capital securities representing undivided
beneficial interests in the Trust having such terms as set forth in Annex I (the
"Series B Capital Securities") in exchange for Series A Capital Securities
accepted for exchange in the Exchange Offer, which Series B Capital Securities
shall not bear the legends required by Section 9.2(i) unless the Holder of such
Series A Capital Securities is either (A) a broker-dealer who purchased such
Series A Capital Securities directly from the Trust for resale pursuant to Rule
144A or any other available exemption under the Securities Act, (B) a Person
participating in the distribution of the Series A Capital Securities or (C) a
Person who is an Affiliate of the Trust. The Trust shall issue no securities or
other interests in the assets of the Trust other than the Capital Securities and
the Common Securities.

     (b)       The consideration received by the Trust for the issuance of the
Securities shall constitute a contribution to the capital of the Trust and shall
not constitute a loan to the Trust.

     (c)       Upon issuance of the Securities as provided in this Declaration,
the Securities so issued shall be deemed to be validly issued, fully paid and
non-assessable.

     (d)       Every Person, by virtue of having become a Holder or a Capital
Security Beneficial Owner in accordance with the terms of this Declaration,
shall be deemed to have expressly assented and agreed to the terms of, and shall
be bound by, this Declaration.

SECTION 7.2    Execution and Authentication.
               ---------------------------- 

     (a)       The Securities shall be signed on behalf of the Trust by an
Administrative Trustee. In case any Administrative Trustee of the Trust who
shall have signed any of the Securities shall cease to be such Administrative
Trustee before the Securities so signed shall be delivered by the Trust, such
Securities nevertheless may be delivered as though the Person who signed such
Securities had not ceased to be such Administrative Trustee; and any Securities
may be signed on behalf of the Trust by such persons who, at the actual date of
execution of such Security, shall be the Administrative Trustees of the Trust,
although at the date of the execution and delivery of the Declaration any such
person was not such a Administrative Trustee.

                                     -25-
<PAGE>
 
     (b)       One Administrative Trustee shall sign the Capital Securities for
the Trust by manual or facsimile signature. Unless otherwise determined by the
Trust, one Administrative Trustee shall sign the Common Securities by a manual
or facsimile signature.

     A Capital Security shall not be valid until authenticated by the manual or
facsimile signature of an authorized signatory of the Property Trustee. The
signature shall be conclusive evidence that the Capital Security has been
authenticated under this Declaration.  A Common Security shall be valid upon
execution by an Administrative Trustee without any act of the Property Trustee.

     Upon a written order of the Trust signed by one Administrative Trustee, the
Property Trustee shall authenticate the Capital Securities for original issue,
which authentication may be made by manual or facsimile signature. The aggregate
number of Capital Securities outstanding at any time shall not exceed the number
set forth in Annex I hereto except as provided in Section 7.6.

     The Property Trustee may appoint an authenticating agent acceptable to the
Trust to authenticate Capital Securities. An authenticating agent may
authenticate Capital Securities whenever the Property Trustee may do so. Each
reference in this Declaration to authentication by the Property Trustee includes
authentication by such agent. An authenticating agent has the same rights as the
Property Trustee to deal with the Sponsor or an Affiliate.

SECTION 7.3    Form and Dating.
               --------------- 

     (a)       The Capital Securities and the Property Trustee's certificate of
authentication shall be substantially in the form of Exhibit A-1 and the Common
Securities shall be substantially in the form of Exhibit A-2, each of which is
hereby incorporated in and expressly made a part of this Declaration.
Certificates representing the Securities may be printed, lithographed or
engraved or may be produced in any other manner as is reasonably acceptable to
the Trust, as evidenced by the execution thereof by one or more Administrative
Trustees. The Securities may have letters, "CUSIP" or other numbers, notations
or other marks of identification or designation and such legends or endorsements
required by law, stock exchange rule, agreements to which the Trust is subject,
if any, or usage (provided that any such notation, legend or endorsement is in a
form acceptable to one or more Administrative Trustees, as evidenced by their
execution thereof). The Trust at the direction of the Sponsor shall furnish any
such legend not contained in Exhibit A-1 to the Property Trustee in writing.
Each Capital Security shall be dated the date of its authentication. The terms
and provisions of the Securities set forth in Annex I and the forms of
Securities set forth in Exhibits A-1 and A-2 are part of the terms of this
Declaration and to the extent applicable, the Property Trustee and the Sponsor,
by their execution and delivery of this Declaration, expressly agree to such
terms and provisions and to be bound thereby.

     (b)       Global Capital Securities. Securities offered and sold to QIBs in
               -------------------------                                        
reliance on Rule 144A or offered and sold outside the United States to non-U.S.
persons in offshore transactions in reliance on Regulation S, as provided in the
Purchase Agreement, shall be issued in the form of one or more, permanent global
Securities in definitive, fully registered form without Distribution coupons
with the appropriate global legends and Restricted Securities Legend set forth
in Exhibit A-1 hereto (respectively, a "Rule 144A Global Capital Security" and
"Regulation S Global Capital Security" and, collectively the "Global Capital
Securities"), which shall be deposited on behalf of the purchasers of the
Capital Securities represented thereby with the Property Trustee, at its New
York office, as custodian for the Clearing Agency, and registered in the name of
the Clearing Agency or a nominee of the Clearing Agency, duly executed by the
Trust and authenticated by the Property Trustee as hereinafter provided. The
number of Capital Securities represented by the Rule 144A Global Capital
Security and the Regulation S Global Capital Security may from time to time be
increased or decreased by adjustments made on the records of the Property
Trustee and the Clearing Agency or its nominee as hereinafter provided.

     (c)       Book-Entry Provisions. This Section 7.3(c) shall apply only to
               ---------------------  
the Rule 144A Global Capital Security, the Regulation S Global Capital Security
and such other Capital Securities in global form as may be authorized by the
Trust to be deposited with or on behalf of the Clearing Agency.

                                      -26-
<PAGE>
 
     An Administrative Trustee shall execute and the Property Trustee shall, in
accordance with this Section 7.3, authenticate and make available for delivery
initially one or more Rule 144A Global Capital Securities and  Regulation S
Global Capital Securities that (i) shall be registered in the name of Cede & Co.
or other nominee of such Clearing Agency and (ii) shall be delivered by the
Trustee to such Clearing Agency or pursuant to such Clearing Agency's written
instructions or held by the Property Trustee as custodian for the Clearing
Agency.

     Members of, or participants in, the Clearing Agency ("Participants") shall
have no rights under this Declaration with respect to any Rule 144A Global
Capital Security or Regulation S Global Capital Security held on their behalf by
the Clearing Agency or by the Property Trustee as the custodian of the Clearing
Agency or under such Rule 144A Global Capital Security or Regulation S Global
Capital Security, and the Clearing Agency may be treated by the Trust, the
Property Trustee and any agent of the Trust or the Property Trustee as the
absolute owner of such Rule 144A Global Capital Security or Regulation S Global
Capital Security for all purposes whatsoever. Notwithstanding the foregoing,
nothing herein shall prevent the Trust, the Property Trustee or any agent of the
Trust or the Property Trustee from giving effect to any written certification,
proxy or other authorization furnished by the Clearing Agency or impair, as
between the Clearing Agency and its Participants, the operation of customary
practices of such Clearing Agency governing the exercise of the rights of a
holder of a beneficial interest in any Rule 144A Global Capital Security or
Regulation S Global Capital Security.

     (d)       Definitive Capital Securities. Except as provided in Section 7.9,
               -----------------------------                                    
owners of beneficial interests in a Rule 144A Global Capital Security or
Regulation S Global Capital Security will not be entitled to receive physical
delivery of certificated Capital Securities ("Definitive Capital Securities").
Purchasers of Securities who are institutional "accredited investors" (as
defined in Rule 501(a)(1), (2), (3) or (7) under the Securities Act) (and who
are not QIBs) and who did not purchase Capital Securities in reliance on
Regulation S will receive Capital Securities in the form of individual
certificates in definitive, fully registered form without distribution coupons
and with the Restricted Securities Legend set forth in Exhibit A-1 hereto
("Restricted Definitive Capital Securities"); provided, however, that upon
registration of transfer of such Restricted Definitive Capital Securities to a
QIB, such Restricted Definitive Capital Securities will, unless the Rule 144A
Global Capital Security has previously been exchanged, be exchanged for an
interest in such Rule 144A Global Capital Security pursuant to the provisions of
Section 9.2. Restricted Definitive Capital Securities will bear the Restricted
Securities Legend set forth on Exhibit A-1 unless removed in accordance with
this Section 7.3 or Section 9.2.

SECTION 7.4    Registrar Paying Agent and Exchange Agent.
               ----------------------------------------- 

     The Trust shall maintain in the Borough of Manhattan, The City of New York,
(i) an office or agency where Capital Securities may be presented for
registration of transfer ("Registrar"), (ii) an office or agency where Capital
Securities may be presented for payment ("Paying Agent") and (iii) an office or
agency where Securities may be presented for exchange ("Exchange Agent"). The
Registrar shall keep a register of the Capital Securities and of their transfer.
The Trust may appoint the Registrar, the Paying Agent and the Exchange Agent and
may appoint one or more co-registrars, one or more additional paying agents and
one or more additional exchange agents in such other locations as it shall
determine. The term "Registrar" includes any additional registrar, "Paying
Agent" includes any additional paying agent and the term "Exchange Agent"
includes any additional exchange agent. The Trust may change any Paying Agent,
Registrar, co-registrar or Exchange Agent without prior notice to any Holder.
The Paying Agent shall be permitted to resign as Paying Agent upon 30 days'
written notice to the Administrative Trustees. The Trust shall notify the
Property Trustee of the name and address of any Agent not a party to this
Declaration. If the Trust fails to appoint or maintain another entity as
Registrar, Paying Agent or Exchange Agent, the Property Trustee shall act as
such. The Trust or any of its Affiliates may act as Paying Agent, Registrar or
Exchange Agent. The Trust, through the Administrative Trustees, shall act as
Paying Agent, Registrar, co-registrar, and Exchange Agent for the Common
Securities.

     The Trust initially appoints the Property Trustee as Registrar, Paying
Agent, and Exchange Agent for the Capital Securities.

SECTION 7.5    Paying Agent to Hold Money in Trust.
               ----------------------------------- 

                                      -27-
<PAGE>
 
     The Trust shall require each Paying Agent other than the Property Trustee
to agree in writing that the Paying Agent will hold in trust for the benefit of
Holders or the Property Trustee all money held by the Paying Agent for the
payment of liquidation amounts or Distributions on the Securities, and will
notify the Property Trustee if there are insufficient funds for such purpose.
While any such insufficiency continues, the Property Trustee may require a
Paying Agent to pay all money held by it to the Property Trustee. The Trust at
any time may require a Paying Agent to pay all money held by it to the Property
Trustee and to account for any money disbursed by it. Upon payment over to the
Property Trustee the Paying Agent (if other than the Trust or an Affiliate of
the Trust) shall have no further liability for the money. If the Trust or the
Sponsor or an Affiliate of the Trust or the Sponsor acts as Paying Agent, it
shall segregate and hold in a separate trust fund for the benefit of the Holders
all money held by it as Paying Agent.

SECTION 7.6    Replacement Securities.
               ---------------------- 

     If the Holder of a Security claims that the Security has been lost,
destroyed or wrongfully taken or if such Security is mutilated and is
surrendered to the Trust, or in the case of the Capital Securities to the
Property Trustee, an Administrative Trustee shall execute and the Property
Trustee shall authenticate and make available for delivery a replacement
Security if the Property Trustee's requirements for replacements of Securities
are met.  An indemnity bond must be provided by the Holder which, in the
judgment of the Property Trustee and the Sponsor, is sufficient to protect the
Trustees, the Sponsor or any authenticating agent from any loss which any of
them may suffer if a Security is replaced. The Trust may charge such Holder for
its expenses in replacing a Security.

     Every replacement Security is an additional beneficial interest in the
Trust.

SECTION 7.7    Outstanding Capital Securities.
               ------------------------------ 

     The Capital Securities outstanding at any time are all the Capital
Securities authenticated by the Property Trustee except for those canceled by
it, those delivered to it for cancellation, and those described in this Section
as not outstanding.

     If a Capital Security is replaced, paid or purchased pursuant to Section
7.6 hereof, it ceases to be outstanding unless the Property Trustee receives
proof satisfactory to it that the replaced, paid or purchased Capital Security
is held by a bona fide purchaser.

     If Capital Securities are considered paid in accordance with the terms of
this Declaration, they cease to be outstanding and Distributions on them shall
cease to accumulate.

     A Capital Security does not cease to be outstanding because one of the
Trust, the Sponsor or an Affiliate of the Sponsor holds the Security.

SECTION 7.8    Capital Securities in Treasury.
               ------------------------------ 

     In determining whether the Holders of the required amount of Securities
have concurred in any direction, waiver or consent, Capital Securities owned by
the Trust, the Sponsor or an Affiliate of the Sponsor, as the case may be, shall
be disregarded and deemed not to be outstanding, except that for the purposes of
determining whether the Property Trustee shall be fully protected in relying on
any such direction, waiver or consent, only Securities which a Responsible
Officer of the Property Trustee actually knows are so owned shall be so
disregarded.

SECTION 7.9    Temporary Securities.
               -------------------- 

     (a)       Until Definitive Securities are ready for delivery, the Trust may
prepare and, in the case of the Capital Securities, the Property Trustee shall
authenticate temporary Securities. Temporary Securities shall be substantially
in the form of Definitive Securities but may have variations that the Trust
considers appropriate for temporary Securities. Without unreasonable delay, the
Trust shall prepare and, in the case of the Capital Securities, the Property
Trustee shall authenticate Definitive Securities in exchange for temporary
Securities.

                                      -28-
<PAGE>
 
     (b)       A Global Capital Security deposited with the Clearing Agency or
with the Property Trustee as custodian for the Clearing Agency pursuant to
Section 7.3 shall be transferred to the beneficial owners thereof in the form of
certificated Capital Securities only if such transfer complies with Section 9.2
and (i) the Clearing Agency notifies the Company that it is unwilling or unable
to continue as Clearing Agency for such Global Capital Security or if at any
time such Clearing Agency ceases to be a "clearing agency" registered under the
Exchange Act and a clearing agency is not appointed by the Sponsor within 90
days of such notice, (ii) a Default or an Event of Default has occurred and is
continuing or (iii) the Trust at its sole discretion elects to cause the
issuance of certificated Capital Securities.

     (c)       Any Global Capital Security that is transferable to the
beneficial owners thereof in the form of certificated Capital Securities
pursuant to this Section 7.9 shall be surrendered by the Clearing Agency to the
Property Trustee located in the Borough of Manhattan, The City of New York, to
be so transferred, in whole or from time to time in part, without charge, and
the Property Trustee shall authenticate and make available for delivery, upon
such transfer of each portion of such Global Capital Security, an equal
aggregate liquidation amount of Securities of authorized denominations in the
form of certificated Capital Securities. Any portion of a Global Capital
Security transferred pursuant to this Section shall be registered in such names
as the Clearing Agency shall direct. Any Capital Security in the form of
certificated Capital Securities delivered in exchange for an interest in the
Restricted Global Capital Security shall, except as otherwise provided by
Sections 7.3 and 9.2, bear the Restricted Securities Legend set forth in Exhibit
A-1 hereto.

     (d)       Subject to the provisions of Section 7.9(c), the Holder of a
Global Capital Security may grant proxies and otherwise authorize any Person,
including Participants and Persons that may hold interests through Participants,
to take any action which such Holder is entitled to take under this Declaration
or the Securities.

     (e)       In the event of the occurrence of any of the events specified in
Section 7.9(b), the Trust will promptly make available to the Property Trustee a
reasonable supply of certificated Capital Securities in fully registered form
without distribution coupons.

SECTION 7.10   Cancellation.
               ------------ 

     The Trust at any time may deliver Capital Securities to the Property
Trustee for cancellation. The Registrar, Paying Agent and Exchange Agent shall
forward to the Property Trustee any Capital Securities surrendered to them for
registration of transfer, redemption, exchange or payment. The Property Trustee
shall promptly cancel all Capital Securities surrendered for registration of
transfer, redemption, exchange, payment, replacement or cancellation and shall
dispose of canceled Capital Securities in accordance with its customary
procedures unless any Administrative Trustee otherwise directs the Property
Trustee in writing.  The Trust may not issue new Capital Securities to replace
Capital Securities that it has paid or that have been delivered to the Property
Trustee for cancellation or that any Holder has exchanged.

SECTION 7.11   CUSIP Numbers.
               ------------- 

     The Trust in issuing the Capital Securities may use "CUSIP" numbers (if
then generally in use), and, if so, the Property Trustee shall use "CUSIP"
numbers in notices of redemption as a convenience to Holders of Capital
Securities; provided that any such notice may state that no representation is
made as to the correctness of such numbers either as printed on the Capital
Securities or as contained in any notice of a redemption and that reliance may
be placed only on the other identification numbers printed on the Capital
Securities, and any such redemption shall not be affected by any defect in or
omission of such numbers. The Sponsor will promptly notify the Property Trustee
of any change in the "CUSIP" numbers.

                                      -29-
<PAGE>
 
                                  ARTICLE VII
                             TERMINATION OF TRUST

SECTION 8.1    Termination of Trust.
               -------------------- 

     (a)       The Trust shall automatically terminate:

           (i)      upon the bankruptcy of the Sponsor;

          (ii)      upon the filing of a certificate of dissolution or
     liquidation or its equivalent with respect to the Sponsor; or the
     revocation of the Sponsor's charter and the expiration of 90 days after the
     date of revocation without a reinstatement thereof;

         (iii)      following the distribution of a Like Amount of the
     Debentures to the Holders of the Securities, provided that the Property
     Trustee has received written notice from the Sponsor directing the Property
     Trustee to terminate the Trust (which direction is optional, and except as
     otherwise expressly provided below, within the discretion of the Sponsor)
     and provided, further, that such direction and such distribution is
     conditioned on (i) the prior approval of the Federal Reserve Board if such
     approval is then required under applicable capital guidelines or policies
     of the Federal Reserve Board, (ii) the Administrative Trustees' receipt of
     an opinion of an independent tax counsel experienced in such matters (a "No
     Recognition Opinion"), which opinion may rely on published rulings of the
     Internal Revenue Service, to the effect that the Holders of the Securities
     will not recognize any gain or loss for United States federal income tax
     purposes as a result of the dissolution of the Trust and the distribution
     of Debentures;

          (iv)      upon the entry of a decree of judicial dissolution of the
     Trust by a court of competent jurisdiction;

           (v)      when all of the Securities shall have been called for
     redemption and the amounts necessary for redemption thereof shall have been
     paid to the Holders in accordance with the terms of the Securities;

          (vi)      upon the repayment of the Debentures or at such time as no
     Debentures are outstanding; or

         (vii)      the expiration of the term of the Trust provided in Section
     3.14.

     (b)       As soon as is practicable after the occurrence of an event
referred to in Section 8.1(a), the Administrative Trustees shall, after
satisfaction of all obligations of the Trust in accordance with applicable law,
file a certificate of cancellation with the Secretary of State of the State of
Delaware.

     (c)       The provisions of Section 3.9 and Article X shall survive the
termination of the Trust.

                                  ARTICLE IX
                             TRANSFER OF INTERESTS

SECTION 9.1    Transfer of Securities.
               ---------------------- 

     (a)       Securities may only be transferred, in whole or in part, in
accordance with the terms and conditions set forth in this Declaration and in
the terms of the Securities. Any transfer or purported transfer of any Security
not made in accordance with this Declaration shall be null and void.

     (b)       Subject to this Article IX, Capital Securities may only be
transferred, in whole or in part, in accordance with the terms and conditions
set forth in this Declaration. Any transfer or purported transfer of any Capital
Security not made in accordance with this Declaration shall be null and void.

                                      -30-
<PAGE>
 
     (c)       The Sponsor may not transfer the Common Securities.

     (d)       The Property Trustee shall provide for the registration of
Capital Securities and of the transfer of Capital Securities, which will be
effected without charge but only upon payment (with such indemnity as the
Property Trustee may require) in respect of any tax or other governmental
charges that may be imposed in relation to it. Upon surrender for registration
of transfer of any Capital Securities, an Administrative Trustee shall cause one
or more new Capital Securities to be issued in the name of the designated
transferee or transferees. Every Capital Security surrendered for registration
of transfer shall be accompanied by a written instrument of transfer in form
satisfactory to the Property Trustee duly executed by the Holder or such
Holder's attorney duly authorized in writing. Each Capital Security surrendered
for registration of transfer shall be delivered to the Property Trustee and
canceled in accordance with Section 7.10. A transferee of a Capital Security
shall be entitled to the rights and subject to the obligations of a Holder
hereunder upon the receipt by such transferee of a Capital Security. By
acceptance of a Capital Security, each transferee shall be deemed to have agreed
to be bound by this Declaration.

SECTION 9.2    Transfer Procedures and Restrictions.
               ------------------------------------ 

     (a)       General. Except as otherwise provided in Section 9.2(b), if
               ------- 
Capital Securities are issued upon the registration of transfer, exchange or
replacement of Capital Securities bearing the Restricted Securities Legend set
forth in Exhibit A-1 hereto, or if a request is made to remove such Restricted
Securities Legend on Capital Securities, the Capital Securities so issued shall
bear the Restricted Securities Legend, or the Restricted Securities Legend shall
not be removed, as the case may be, unless there is delivered to the Trust and
the Property Trustee such satisfactory evidence, which shall include an Opinion
of Counsel, as may be reasonably required by the Trust and the Property Trustee,
that neither the legend nor the restrictions on transfer set forth therein are
required to ensure that transfers thereof are made pursuant to an exception from
the registration requirements of the Securities Act or, with respect to
Restricted Securities, that such Securities are not "restricted" within the
meaning of Rule 144. Upon provision of such satisfactory evidence, the Property
Trustee, at the written direction of the Trust, shall authenticate and deliver
Capital Securities that do not bear the legend.

     (b)       Transfers After Effectiveness of a Registration Statement. After
               --------------------------------------------------------- 
the effectiveness of a Registration Statement with respect to any Capital
Securities, all requirements pertaining to legends on such Capital Securities
will cease to apply, and beneficial interests in a Global Capital Security
without legends will be available to transferees of such Capital Securities,
upon exchange of the transferring Holder's Restricted Definitive Capital
Security or directions to transfer such Holder's beneficial interest in the Rule
144A Global Capital Security or the Regulation S Global Capital Security, as the
case may be. No such transfer or exchange of a Restricted Definitive Capital
Security or of an interest in the Rule 144A Global Capital Security or the
Regulation S Global Capital Security shall be effective unless the transferor
delivers to the Property Trustee a certificate in a form substantially similar
to that attached hereto as the "Form of Assignment" in Exhibit A-1. Except as
otherwise provided in Section 9.2(m), after the effectiveness of a Registration
Statement, the Trust shall issue and the Property Trustee, upon a written order
of the Trust signed by one Administrative Trustee, shall authenticate a Global
Capital Security without the Restricted Securities Legend (the "Unrestricted
Global Capital Security") to deposit with the Clearing Agency to evidence
transfers of beneficial interests from the (i) Rule 144A Global Capital Security
or the Regulation S Global Capital Security, as the case may be, and (ii)
Restricted Definitive Capital Securities.

     (c)       Transfer and Exchange of Definitive Capital Securities. When
               ------------------------------------------------------ 
Definitive Capital Securities are presented to the Registrar or co-registrar

     (x)       to register the transfer of such Definitive Capital Securities or

     (y)       to exchange such Definitive Capital Securities which became
     mutilated, destroyed, defaced, stolen or lost, for an equal number of
     Definitive Capital Securities,

                                      -31-
<PAGE>
 
the Registrar or co-registrar shall register the transfer or make the exchange
as requested if its reasonable requirements for such transaction are met;
provided, however, that the Definitive Capital Securities surrendered for
registration of transfer or exchange:

           (i)      shall be duly endorsed or accompanied by a written
     instrument of transfer in form reasonably satisfactory to the Trust and the
     Registrar or co-registrar, duly executed by the Holder thereof or his
     attorney duly authorized in writing; and

          (ii)      in the case of Definitive Capital Securities that are
     Restricted Definitive Capital Securities:

               (A)  if such Restricted Capital Securities are being delivered to
               the Registrar by a Holder for registration in the name of such
               Holder, without transfer, a certification from such Holder to
               that effect; or

               (B)  if such Restricted Capital Securities are being transferred:
               (i) a certification from the transferor in a form substantially
               similar to that attached hereto as the "Form of Assignment" in
               Exhibit A-1, and (ii) if the Trust or Registrar so requests,
               evidence reasonably satisfactory to them as to the compliance
               with the restrictions set forth in the Restricted Securities
               Legend.

     (d)       Restrictions on Transfer of a Definitive Capital Security for a
               ---------------------------------------------------------------
Beneficial Interest in a Global Capital Security. A Definitive Capital Security
- ------------------------------------------------                               
may not be exchanged for a beneficial interest in a Global Capital Security
except upon satisfaction of the requirements set forth below. Upon receipt by
the Property Trustee of a Definitive Capital Security, duly endorsed or
accompanied by appropriate instruments of transfer, in form satisfactory to the
Property Trustee, together with:

           (i)      if such Definitive Capital Security is a Restricted Capital
     Security, certification from the transferor (in a form substantially
     similar to that attached hereto as the "Form of Assignment" in Exhibit A-
     1); provided , however, that such Definitive Capital Security may only be
     exchanged for an interest in a Regulation S Global Security where such
     Definitive Capital Security is being transferred pursuant to Regulation S
     or Rule 144 (if available); and

          (ii)      whether or not such Definitive Capital Security is a
     Restricted Capital Security, written instructions directing the Property
     Trustee to make, or to direct the Clearing Agency to make, an adjustment on
     its books and records with respect to the applicable Global Capital
     Security to reflect an increase in the number of the Capital Securities
     represented by such Global Capital Security;

then the Property Trustee shall cancel such Definitive Capital Security and
cause, or direct the Clearing Agency to cause, the aggregate number of Capital
Securities represented by the applicable Global Capital Security to be increased
accordingly. If no Global Capital Security is then outstanding, the Trust shall
issue and the Property Trustee shall authenticate, upon written order of any
Administrative Trustee, the Global Capital Security representing the appropriate
number of Capital Securities.

     (e)       Transfer and Exchange of Global Capital Securities. Subject to
               --------------------------------------------------
Section 9.2(f), the transfer and exchange of Global Capital Securities or
beneficial interests therein shall be effected through the Clearing Agency, in
accordance with this Declaration (including applicable restrictions on transfer
set forth herein, if any) and the procedures of the Clearing Agency therefor.

     (f)       Transfer of a Beneficial Interest in a Global Capital Security
               --------------------------------------------------------------
for a Definitive Capital Security.
- ---------------------------------

           (i)      Any Person having a beneficial interest in a Global Capital
     Security may upon request, but only upon 20 days prior notice to the
     Property Trustee, and if accompanied by the information specified below,
     exchange such beneficial interest for a Definitive Capital Security
     representing the same number of Capital Securities. Upon receipt by the
     Property Trustee from the Clearing Agency or its nominee on behalf of any

                                      -32-
<PAGE>
 
     Person having a beneficial interest in a Global Capital Security of written
     instructions or such other form of instructions as is customary for the
     Clearing Agency or the Person designated by the Clearing Agency as having
     such a beneficial interest in a Restricted Capital Security and a
     certification from the transferor (in a form substantially similar to that
     attached hereto as the "Form of Assignment" in Exhibit A-1), which may be
     submitted by facsimile, then the Property Trustee will cause the aggregate
     number of Capital Securities represented by the applicable Global Capital
     Security to be reduced on its books and records and, following such
     reduction, the Trust will execute and the Property Trustee will
     authenticate and make available for delivery to the transferee a Definitive
     Capital Security.

          (ii)      Definitive Capital Securities issued in exchange for a
     beneficial interest in a Global Capital Security pursuant to this Section
     9.2(f) shall be registered in such names and in such authorized
     denominations as the Clearing Agency, pursuant to instructions from its
     Participants or indirect participants or otherwise, shall instruct the
     Property Trustee in writing. The Property Trustee shall deliver such
     Capital Securities to the Persons in whose names such Capital Securities
     are so registered in accordance with such instructions of the Clearing
     Agency.

     (g)       Restrictions on Transfer and Exchange of Global Capital
               -------------------------------------------------------
Securities. Notwithstanding any other provisions of this Declaration (other than
- ----------
the provisions set forth in subsection (h) of this Section 9.2), a Global
Capital Security may not be transferred as a whole except by the Clearing Agency
to a nominee of the Clearing Agency or another nominee of the Clearing Agency or
by the Clearing Agency or any such nominee to a successor Clearing Agency or a
nominee of such successor Clearing Agency.

     Prior to the expiration of the restricted period, as contemplated by
Regulation S, beneficial interests in the Regulation S Global Capital Security
may be exchanged for beneficial interests in the Rule 144A Global Capital
Security only if such exchange occurs in connection with a transfer of the
Capital Securities pursuant to Rule 144A and the transferor first delivers to
the Property Trustee a written certificate (in a form substantially similar to
that attached hereto as the "Form of Assignment" in Exhibit A-1) to the effect
that the Capital Securities are being transferred to a Person who the transferor
reasonably believes is a QIB, purchasing for its own account or the account of a
QIB in a transaction meeting the requirements of Rule 144A and in accordance
with all applicable securities laws of the states of the United States and other
jurisdictions.

     Beneficial interests in the Rule 144A Global Capital Security may be
transferred to a Person who takes delivery in the form of an interest in the
Regulation S Global Capital Security, whether before or after the expiration of
such restricted period, as contemplated by Regulation S, only if the transferor
first delivers to the Property Trustee a written certificate (in a form
substantially similar to that attached hereto as the "Form of Assignment" in
Exhibit A-1) to the effect that such transfer is being made in accordance with
Rule 903 or 904 of Regulation S or Rule 144 (if available) and that, if such
transfer occurs prior to the expiration of such restricted period, the interest
transferred will be held immediately thereafter through Euroclear or CEDEL.

     (h)       Authentication of Definitive Capital Securities. If at any time:
               -----------------------------------------------                 

           (i)      there occurs a Default or an Event of Default which is
     continuing, or

          (ii)      the Trust, in its sole discretion, notifies the Property
     Trustee in writing that it elects to cause the issuance of Definitive
     Capital Securities under this Declaration,

then the Trust will execute, and the Property Trustee, upon receipt of a written
order of the Trust signed by one Administrative Trustee requesting the
authentication and delivery of Definitive Capital Securities to the Persons
designated by the Trust, will authenticate and make available for delivery
Definitive Capital Securities, equal in number to the number of Capital
Securities represented by the applicable Global Capital Security, in exchange
for such Global Capital Security.

                                      -33-
<PAGE>
 
     (i)       Legend.
               ------ 

           (i)      Except as permitted by the following paragraph (ii), each
     Capital Security certificate evidencing a Global Capital Security or a
     Definitive Capital Security (and all Capital Securities issued in exchange
     therefor or substitution thereof) shall bear a legend (the "Restricted
     Securities Legend") in substantially the following form:

     THIS CAPITAL SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
     1933, AS AMENDED (THE "SECURITIES ACT") OR ANY STATE SECURITIES LAWS OR ANY
     OTHER APPLICABLE SECURITIES LAW. NEITHER THIS CAPITAL SECURITY NOR ANY
     INTEREST OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED,
     TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF
     SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT
     TO, SUCH REGISTRATION.

     THE HOLDER OF THIS CAPITAL SECURITY BY ITS ACCEPTANCE HEREOF AGREES TO
     OFFER, SELL OR OTHERWISE TRANSFER THIS CAPITAL SECURITY, PRIOR TO THE DATE
     (THE "RESALE RESTRICTION TERMINATION DATE") WHICH IS THREE YEARS AFTER THE
     LATER OF THE ORIGINAL ISSUANCE DATE HEREOF AND THE LAST DATE ON WHICH THE
     COMPANY OR ANY "AFFILIATE" OF THE COMPANY WAS THE OWNER OF THIS CAPITAL
     SECURITY (OR ANY PREDECESSOR OF THIS CAPITAL SECURITY) ONLY (A) TO THE
     COMPANY, (B) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED
     EFFECTIVE UNDER THE SECURITIES ACT, (C) SO LONG AS THIS CAPITAL SECURITY IS
     ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT ("RULE
     144A"), TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL
     BUYER" (AS DEFINED IN RULE 144A) THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR
     THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT
     THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS
     AND SALES TO NON-U.S. PERSONS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN
     THE MEANING OF REGULATION S UNDER THE SECURITIES ACT, (E) TO AN
     INSTITUTIONAL "ACCREDITED INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH
     (a)(1), (2), (3) OR (7) OF RULE 501 UNDER THE SECURITIES ACT THAT IS
     ACQUIRING THIS CAPITAL SECURITY FOR ITS OWN ACCOUNT, OR FOR THE ACCOUNT OF
     SUCH AN INSTITUTIONAL ACCREDITED INVESTOR, FOR INVESTMENT PURPOSES AND NOT
     WITH A VIEW TO, OR FOR OFFER OR SALE IN CONNECTION WITH, ANY DISTRIBUTION
     IN VIOLATION OF THE SECURITIES ACT, OR (F) PURSUANT TO ANY OTHER AVAILABLE
     EXEMPTION FROM THE REGISTRATION REQUIREMENTS UNDER THE SECURITIES ACT,
     SUBJECT TO THE RIGHT OF THE TRUST AND THE COMPANY PRIOR TO ANY SUCH OFFER,
     SALE OR TRANSFER (i) PURSUANT TO CLAUSE (D), (E) OR (F) TO REQUIRE THE
     DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATIONS AND/OR OTHER INFORMATION
     SATISFACTORY TO EACH OF THEM, AND (ii) PURSUANT TO CLAUSE (E), TO REQUIRE
     THAT A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THE REVERSE OF THIS
     CAPITAL SECURITY IS COMPLETED AND DELIVERED BY THE TRANSFEREE TO THE TRUST.
     SUCH HOLDER FURTHER AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS
     CAPITAL SECURITY IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF
     THIS LEGEND.

The following legend shall also apply to each Regulation S Global Capital
Security:

     THIS CAPITAL SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT  AND
     MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE
     ACCOUNT OR BENEFIT OF, U.S. PERSONS UNLESS REGISTERED UNDER THE 

                                      -34-
<PAGE>
 
     SECURITIES ACT OR AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE
     SECURITIES ACT IS AVAILABLE.

          (ii)      Upon any sale or transfer of a Restricted Capital Security
     (including any Restricted Capital Security represented by a Global Capital
     Security) pursuant to an effective registration statement under the
     Securities Act or pursuant to Rule 144 under the Securities Act after such
     registration statement ceases to be effective:

               (A)  in the case of any Restricted Capital Security that is a
     Definitive Capital Security, the Registrar shall permit the Holder thereof
     to exchange such Restricted Capital Security for a Definitive Capital
     Security that does not bear the Restricted Securities Legend and rescind
     any restriction on the transfer of such Restricted Capital Security; and

               (B)  in the case of any Restricted Capital Security that is
     represented by a Global Capital Security, the Registrar shall permit the
     Holder of such Global Capital Security to exchange such Global Capital
     Security for another Global Capital Security that does not bear the
     Restricted Securities Legend.

     (j)       Cancellation or Adjustment of Global Capital Security. At such
               ----------------------------------------------------- 
time as all beneficial interests in a Global Capital Security have either been
exchanged for Definitive Capital Securities to the extent permitted by this
Declaration or redeemed, repurchased or canceled in accordance with the terms of
this Declaration, such Global Capital Security shall be returned to the Clearing
Agency for cancellation or retained and canceled by the Property Trustee. At any
time prior to such cancellation, if any beneficial interest in a Global Capital
Security is exchanged for Definitive Capital Securities, Capital Securities
represented by such Global Capital Security shall be reduced and an adjustment
shall be made on the books and records of the Property Trustee (if it is then
the custodian for such Global Capital Security) with respect to such Global
Capital Security, by the Property Trustee or the Securities Custodian, to
reflect such reduction.

     (k)       Obligations with Respect to Transfers and Exchanges of Capital
               --------------------------------------------------------------
Securities.
- ---------- 

           (i)      To permit registrations of transfers and exchanges, the
     Trust shall execute and the Property Trustee shall authenticate Definitive
     Capital Securities and Global Capital Securities at the Registrar's or co-
     registrar's request in accordance with the terms of this Declaration.

          (ii)      Registrations of transfers or exchanges will be effected
     without charge, but only upon payment (with such indemnity as the Trust or
     the Sponsor may require) in respect of any tax or other governmental charge
     that may be imposed in relation to it.

         (iii)      The Registrar or co-registrar shall not be required to
     register the transfer of or exchange of (a) Capital Securities during a
     period beginning at the opening of business 15 days before the day of
     mailing of a notice of redemption or any notice of selection of Capital
     Securities for redemption and ending at the close of business on the day of
     such mailing or (b) any Capital Security so selected for redemption in
     whole or in part, except the unredeemed portion of any Capital Security
     being redeemed in part.

          (iv)      Prior to the due presentation for registration of transfer
     of any Capital Security, the Trust, the Property Trustee, the Paying Agent,
     the Registrar or any co-registrar may deem and treat the Person in whose
     name a Capital Security is registered as the absolute owner of such Capital
     Security for the purpose of receiving Distributions on such Capital
     Security and for all other purposes whatsoever, and none of the Trust, the
     Property Trustee, the Paying Agent, the Registrar or any co-registrar shall
     be affected by notice to the contrary.

           (v)      All Capital Securities issued upon any registration of
     transfer or exchange pursuant to the terms of this Declaration shall
     evidence the same security and shall be entitled to the same benefits under
     this Declaration as the Capital Securities surrendered upon such
     registration of transfer or exchange.

                                      -35-
<PAGE>
 
     (l)       No Obligation of the Property Trustee.
               ------------------------------------- 

           (i)      The Property Trustee shall have no responsibility or
     obligation to any beneficial owner of a Global Capital Security, a
     Participant in the Clearing Agency or other Person with respect to the
     accuracy of the records of the Clearing Agency or its nominee or of any
     Participant thereof, with respect to any ownership interest in the Capital
     Securities or with respect to the delivery to any Participant, beneficial
     owner or other Person (other than the Clearing Agency) of any notice
     (including any notice of redemption) or the payment of any amount, under or
     with respect to such Capital Securities. All notices and communications to
     be given to the Holders and all payments to be made to Holders under the
     Capital Securities shall be given or made only to or upon the order of the
     registered Holders (which shall be the Clearing Agency or its nominee in
     the case of a Global Capital Security). The rights of beneficial owners in
     any Global Capital Security shall be exercised only through the Clearing
     Agency subject to the applicable rules and procedures of the Clearing
     Agency. The Property Trustee may conclusively rely and shall be fully
     protected in relying upon information furnished by the Clearing Agency or
     any agent thereof with respect to its Participants and any beneficial
     owners.

          (ii)      The Property Trustee and Registrar shall have no obligation
     or duty to monitor, determine or inquire as to compliance with any
     restrictions on transfer imposed under this Declaration or under applicable
     law with respect to any transfer of any interest in any Capital Security
     (including any transfers between or among Clearing Agency Participants or
     beneficial owners in any Global Capital Security) other than to require
     delivery of such certificates and other documentation or evidence as are
     expressly required by, and to do so if and when expressly required by, the
     terms of this Declaration, and to examine the same to determine substantial
     compliance as to form with the express requirements hereof.

     (m)       Exchange of Series A Capital Securities for Series B Capital
               ------------------------------------------------------------
Securities.  The Series A Capital Securities may be exchanged for Series B
Capital Securities pursuant to the terms of the Exchange Offer.  The Property
Trustee shall make the exchange as follows:

     The Sponsor shall present the Property Trustee with an Officers'
Certificate certifying the following:

           (i)      upon issuance of the Series B Capital Securities, the
     transactions contemplated by the Exchange Offer have been consummated; and

          (ii)      the number of Series A Capital Securities properly tendered
     in the Exchange Offer that are represented by a Global Capital Security and
     the number of Series A Capital Securities properly tendered in the Exchange
     Offer that are represented by Definitive Capital Securities, the name of
     each Holder of such Definitive Capital Securities, the liquidation amount
     of Capital Securities properly tendered in the Exchange Offer by each such
     Holder and the name and address to which Definitive Capital Securities for
     Series B Capital Securities shall be registered and sent for each such
     Holder.

     The Property Trustee, upon receipt of (i) such Officers' Certificate, (ii)
an Opinion of Counsel (x) to the effect that the Series B Capital Securities
have been registered under Section 5 of the Securities Act and this Declaration
and the Series B Capital Securities Guarantee have each been qualified under the
Trust Indenture Act and (y) with respect to the matters set forth in Section
3(p) of the Registration Rights Agreement and (iii) a Company Order, shall
authenticate (A) a Global Capital Security for Series B Capital Securities in
aggregate liquidation amount equal to the aggregate liquidation amount of Series
A Capital Securities represented by a Global Capital Security indicated in such
Officers' Certificate as having been properly tendered and (B) Definitive
Capital Securities representing Series B Capital Securities registered in the
names and in the liquidation amounts indicated in such Officers' Certificate.

     If, upon consummation of the Exchange Offer, less than all the outstanding
Series A Capital Securities shall have been properly tendered and not withdrawn,
the Property Trustee shall make an endorsement on the Global Capital Security
for Series A Capital Securities indicating the reduction in the number and
aggregate liquidation amount represented thereby as a result of the Exchange
Offer.

                                      -36-
<PAGE>
 
     The Trust shall deliver such Definitive Capital Securities for Series B
Capital Securities to the Holders thereof as indicated in such Officers'
Certificate.

     (n)       Minimum Transfers. Series A Capital Securities may only be
               -----------------   
transferred in minimum blocks of $100,000 aggregate liquidation amount until
such Series A Capital Securities are registered pursuant to an effective
registration statement filed under the Securities Act or are "unrestricted"
pursuant to Rule 144 under the Securities Act.

SECTION 9.3    Deemed Security Holders.
               ----------------------- 

     The Trustees may treat the Person in whose name any Security shall be
registered on the books and records of the Trust as the sole owner of such
Security for purposes of receiving Distributions and for all other purposes
whatsoever and, accordingly, shall not be bound to recognize any equitable or
other claim to or interest in such Security on the part of any Person, whether
or not the Trust shall have actual or other notice thereof.

SECTION 9.4    Book Entry Interests.
               -------------------- 

     Global Capital Securities shall initially be registered on the books and
records of the Trust in the name of Cede & Co., the nominee of the Clearing
Agency, and no Capital Security Beneficial Owner will receive a definitive
certificate for a Capital Security  (a "Capital Security Certificate")
representing such Capital Security Beneficial Owner's interests in such Global
Capital Securities, except as provided in Section 9.2. Unless and until
definitive, fully registered Capital Securities certificates have been issued to
the Capital Security Beneficial Owners pursuant to Section 9.2:

     (a)       the provisions of this Section 9.4 shall be in full force and
effect;

     (b)       the Trust and the Trustees shall be entitled to deal with the
Clearing Agency for all purposes of this Declaration (including the payment of
Distributions on a Global Capital Security and receiving approvals, votes or
consents hereunder) as the Holder of the Capital Securities and the sole holder
of the Global Capital Security and shall have no obligation to the Capital
Security Beneficial Owners;

     (c)       to the extent that the provisions of this Section 9.4 conflict
with any other provisions of this Declaration, the provisions of this Section
9.4 shall control; and

     (d)       the rights of the Capital Security Beneficial Owners shall be
exercised only through the Clearing Agency and shall be limited to those
established by law and agreements between such Capital Security Beneficial
Owners and the Clearing Agency and/or the Clearing Agency Participants and
receive and transmit payments of Distributions on the Global Capital Security to
such Clearing Agency Participants. DTC will make book entry transfers among the
Clearing Agency Participants.

SECTION 9.5    Notices to Clearing Agency.
               -------------------------- 

     Whenever a notice or other communication to the Capital Security Holders is
required under this Declaration, the Trustees shall give all such notices and
communications specified herein to be given to the Holder of the Global Capital
Security to the Clearing Agency, and shall have no notice obligations to the
Capital Security Beneficial Owners.

SECTION 9.6    Appointment of Successor Clearing Agency.
               ---------------------------------------- 

     If any Clearing Agency elects to discontinue its services as securities
depositary with respect to the Capital Securities the Administrative Trustees
may, in their sole discretion, appoint a successor Clearing Agency with respect
to such Capital Securities.

                                      -37-
<PAGE>
 
                                   ARTICLE X
                          LIMITATION OF LIABILITY OF
                   HOLDERS OF SECURITIES, TRUSTEES OR OTHERS

SECTION 10.1   Liability.
               --------- 

     (a)       Except as expressly set forth in this Declaration, the Securities
Guarantees and the terms of the Securities, the Sponsor shall not be:

           (i)      personally liable for the return of any portion of the
     capital contributions (or any return thereon) of the Holders of the
     Securities which shall be made solely from assets of the Trust; and

          (ii)      be required to pay to the Trust or to any Holder of
     Securities any deficit upon dissolution of the Trust or otherwise.

     (b)       The Sponsor shall be liable for all of the debts and obligations
of the Trust (other than with respect to the Securities) to the extent not
satisfied out of the Trust's assets.

     (c)       Pursuant to (S) 3803(a) of the Business Trust Act, the Holders of
the Capital Securities shall be entitled to the same limitation of personal
liability extended to stockholders of private corporations for profit organized
under the General Corporation Law of the State of Delaware.

SECTION 10.2   Exculpation.
               ----------- 

     (a)       No Indemnified Person shall be liable, responsible or accountable
in damages or otherwise to the Trust or any Covered Person for any loss, damage
or claim incurred by reason of any act or omission performed or omitted by such
Indemnified Person in good faith on behalf of the Trust and in a manner such
Indemnified Person reasonably believed to be within the scope of the authority
conferred on such Indemnified Person by this Declaration or by law, except that
an Indemnified Person shall be liable for any such loss, damage or claim
incurred by reason of such Indemnified Person's gross negligence (or in the case
of the Property Trustee, negligence) or willful misconduct with respect to such
acts or omissions.

     (b)       An Indemnified Person shall be fully protected in relying in good
faith upon the records of the Trust and upon such information, opinions, reports
or statements presented to the Trust by any Person as to matters the Indemnified
Person reasonably believes are within such other Person's professional or expert
competence and who has been selected with reasonable care by or on behalf of the
Trust, including information, opinions, reports or statements as to the value
and amount of the assets, liabilities, profits, losses, or any other facts
pertinent to the existence and amount of assets from which Distributions to
Holders of Securities might properly be paid.

SECTION 10.3   Fiduciary Duty.
               -------------- 

     (a)       To the extent that, at law or in equity, an Indemnified Person
has duties (including fiduciary duties) and liabilities relating thereto to the
Trust or to any other Covered Person, an Indemnified Person acting under this
Declaration shall not be liable to the Trust or to any other Covered Person for
its good faith reliance on the provisions of this Declaration. The provisions of
this Declaration, to the extent that they restrict the duties and liabilities of
an Indemnified Person otherwise existing at law or in equity (other than the
duties imposed on the Property Trustee under the Trust Indenture Act), are
agreed by the parties hereto to replace such other duties and liabilities of
such Indemnified Person.

     (b)       Unless otherwise expressly provided herein:

           (i)      whenever a conflict of interest exists or arises between any
     Covered Persons; or

                                      -38-
<PAGE>
 
          (ii)      whenever this Declaration or any other agreement
     contemplated herein or therein provides that an Indemnified Person shall
     act in a manner that is, or provides terms that are, fair and reasonable to
     the Trust or any Holder of Securities;

the Indemnified Person shall resolve such conflict of interest, take such action
or provide such terms, considering in each case the relative interest of each
party (including its own interest) to such conflict, agreement, transaction or
situation and the benefits and burdens relating to such interests, any customary
or accepted industry practices, and any applicable generally accepted accounting
practices or principles. In the absence of bad faith by the Indemnified Person,
the resolution, action or term so made, taken or provided by the Indemnified
Person shall not constitute a breach of this Declaration or any other agreement
contemplated herein or of any duty or obligation of the Indemnified Person at
law or in equity or otherwise.

     (c)       Whenever in this Declaration an Indemnified Person is permitted
or required to make a decision:

           (i)      in its "discretion" or under a grant of similar authority,
     the Indemnified Person shall be entitled to consider such interests and
     factors as it desires, including its own interests, and shall have no duty
     or obligation to give any consideration to any interest of or factors
     affecting the Trust or any other Person; or

          (ii)      in its "good faith" or under another express standard, the
     Indemnified Person shall act under such express standard and shall not be
     subject to any other or different standard imposed by this Declaration or
     by applicable law.

SECTION 10.4   Indemnification.
               --------------- 

     (a)       (i)  The Sponsor shall indemnify, to the full extent permitted by
law, any Company Indemnified Person who was or is a party or is threatened to be
made a party to any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative (other than an action
by or in the right of the Trust) by reason of the fact that he is or was a
Company Indemnified Person against expenses (including attorneys' fees and
expenses), judgments, fines and amounts paid in settlement actually and
reasonably incurred by him in connection with such action, suit or proceeding if
he acted in good faith and in a manner he reasonably believed to be in or not
opposed to the best interests of the Trust, and, with respect to any criminal
action or proceeding, had no reasonable cause to believe his conduct was
unlawful. The termination of any action, suit or proceeding by judgment, order,
settlement, conviction, or upon a plea of nolo contendere or its equivalent,
shall not, of itself, create a presumption that the Company Indemnified Person
did not act in good faith and in a manner which he reasonably believed to be in
or not opposed to the best interests of the Trust, and with respect to any
criminal action or proceeding, had reasonable cause to believe that his conduct
was unlawful.

          (ii)      The Sponsor shall indemnify, to the full extent permitted by
     law, any Company Indemnified Person who was or is a party or is threatened
     to be made a party to any threatened, pending or completed action or suit
     by or in the right of the Trust to procure a judgment in its favor by
     reason of the fact that he is or was a Company Indemnified Person against
     expenses (including attorneys' fees and expenses) actually and reasonably
     incurred by him in connection with the defense or settlement of such action
     or suit if he acted in good faith and in a manner he reasonably believed to
     be in or not opposed to the best interests of the Trust and except that no
     such indemnification shall be made in respect of any claim, issue or matter
     as to which such Company Indemnified Person shall have been adjudged to be
     liable to the Trust unless and only to the extent that the Court of
     Chancery of Delaware or the court in which such action or suit was brought
     shall determine upon application that, despite the adjudication of
     liability but in view of all the circumstances of the case, such Person is
     fairly and reasonably entitled to indemnity for such expenses which such
     Court of Chancery or such other court shall deem proper.

         (iii)      To the extent that a Company Indemnified Person shall be
     successful on the merits or otherwise (including dismissal of an action
     without prejudice or the settlement of an action without admission of
     liability) in defense of any action, suit or proceeding referred to in
     paragraphs (i) and (ii) of this Section 

                                      -39-
<PAGE>
 
     10.4(a), or in defense of any claim, issue or matter therein, he shall be
     indemnified, to the full extent permitted by law, against expenses
     (including attorneys' fees and expenses) actually and reasonably incurred
     by him in connection therewith.

          (iv)      Any indemnification under paragraphs (i) and (ii) of this
     Section 10.4(a) (unless ordered by a court) shall be made by the Sponsor
     only as authorized in the specific case upon a determination that
     indemnification of the Company Indemnified Person is proper in the
     circumstances because he has met the applicable standard of conduct set
     forth in paragraphs (i) and (ii). Such determination shall be made (1) by
     the Administrative Trustees by a majority vote of a quorum consisting of
     such Administrative Trustees who were not parties to such action, suit or
     proceeding, (2) if such a quorum is not obtainable, or, even if obtainable,
     if a quorum of disinterested Administrative Trustees so directs, by
     independent legal counsel in a written opinion, or (3) by the Common
     Security Holder of the Trust.

           (v)      Expenses (including attorneys' fees and expenses) incurred
     by a Company Indemnified Person in defending a civil, criminal,
     administrative or investigative action, suit or proceeding referred to in
     paragraphs (i) and (ii) of this Section 10.4(a) shall be paid by the
     Sponsor in advance of the final disposition of such action, suit or
     proceeding upon receipt of an undertaking by or on behalf of such Company
     Indemnified Person to repay such amount if it shall ultimately be
     determined that he is not entitled to be indemnified by the Sponsor as
     authorized in this Section 10.4(a). Notwithstanding the foregoing, no
     advance shall be made by the Sponsor if a determination is reasonably and
     promptly made (i) by the Administrative Trustees by a majority vote of a
     quorum of disinterested Administrative Trustees, (ii) if such a quorum is
     not obtainable, or, even if obtainable, if a quorum of disinterested
     Administrative Trustees so directs, by independent legal counsel in a
     written opinion or (iii) the Common Security Holder of the Trust, that,
     based upon the facts known to the Administrative Trustees, counsel or the
     Common Security Holder at the time such determination is made, such Company
     Indemnified Person acted in bad faith or in a manner that such Person did
     not believe to be in or not opposed to the best interests of the Trust, or,
     with respect to any criminal proceeding, that such Company Indemnified
     Person believed or had reasonable cause to believe his conduct was
     unlawful. In no event shall any advance be made in instances where the
     Administrative Trustees, independent legal counsel or Common Security
     Holder reasonably determine that such Person deliberately breached his duty
     to the Trust or its Common or Capital Security Holders.

          (vi)      The indemnification and advancement of expenses provided by,
     or granted pursuant to, the other paragraphs of this Section 10.4(a) shall
     not be deemed exclusive of any other rights to which those seeking
     indemnification and advancement of expenses may be entitled under any
     agreement, vote of stockholders or disinterested directors of the Sponsor
     or Capital Security Holders of the Trust or otherwise, both as to action in
     his official capacity and as to action in another capacity while holding
     such office. All rights to indemnification under this Section 10.4(a) shall
     be deemed to be provided by a contract between the Sponsor and each Company
     Indemnified Person who serves in such capacity at any time while this
     Section 10.4(a) is in effect. Any repeal or modification of this Section
     10.4(a) shall not affect any rights or obligations then existing.

         (vii)      The Sponsor or the Trust may purchase and maintain insurance
     on behalf of any Person who is or was a Company Indemnified Person against
     any liability asserted against him and incurred by him in any such
     capacity, or arising out of his status as such, whether or not the
     Debenture Issuer would have the power to indemnify him against such
     liability under the provisions of this Section 10.4(a).

        (viii)      For purposes of this Section 10.4(a), references to "the
     Trust" shall include, in addition to the resulting or surviving entity, any
     constituent entity (including any constituent of a constituent) absorbed in
     a consolidation or merger, so that any Person who is or was a director,
     trustee, officer or employee of such constituent entity, or is or was
     serving at the request of such constituent entity as a director, trustee,
     officer, employee or agent of another entity, shall stand in the same
     position under the provisions of this Section 10.4(a) with respect to the
     resulting or surviving entity as he would have with respect to such
     constituent entity if its separate existence had continued.

                                      -40-
<PAGE>
 
          (ix)      The indemnification and advancement of expenses provided by,
     or granted pursuant to, this Section 10.4(a) shall, unless otherwise
     provided when authorized or ratified, continue as to a Person who has
     ceased to be a Company Indemnified Person and shall inure to the benefit of
     the heirs, executors and administrators of such a Person.

     (b)       The Sponsor agrees to indemnify (i) the Property Trustee, (ii)
the Delaware Trustee, (iii) any Affiliate of the Property Trustee and the
Delaware Trustee, and (iv) any officers, directors, shareholders, members,
partners, employees, representatives, custodians, nominees or agents of the
Property Trustee or the Delaware Trustee (each of the Persons in (i) through
(iv) being referred to as a "Fiduciary Indemnified Person") for, and to hold
each Fiduciary Indemnified Person harmless against, any and all loss, liability,
damage, claim or expense including taxes (other than taxes based on the income
of such Fiduciary Indemnified Person) incurred without negligence or bad faith
on its part, arising out of or in connection with the acceptance or
administration of the trust or trusts hereunder, including the costs and
expenses (including reasonable legal fees and expenses) of defending itself
against or investigating any claim or liability in connection with the exercise
or performance of any of its powers or duties hereunder. The obligation to
indemnify as set forth in this Section 10.4(b) shall survive the resignation or
removal of the Property Trustee or the Delaware Trustee and the satisfaction and
discharge of this Declaration.

SECTION 10.5   Compensation of the Property Trustee and Delaware Trustee.
               --------------------------------------------------------- 

     The Sponsor agrees to pay the Property Trustee and the Delaware Trustee,
from time to time such compensation for all services rendered by the Property
Trustee and the Delaware Trustee hereunder as may be mutually agreed upon in
writing by the Sponsor and the Property Trustee or the Delaware Trustee, as the
case may be, and, except as otherwise expressly provided herein, to reimburse
the Property Trustee and the Delaware Trustee upon its or their request for all
reasonable expenses, disbursements and advances incurred or made by the Property
Trustee or the Delaware Trustee, as the case may be, in accordance with the
provisions of this Declaration, except any such expense, disbursement or advance
as may be attributable to its or their negligence or bad faith.

SECTION 10.6   Outside Businesses.
               ------------------ 

     Any Covered Person, the Sponsor, the Delaware Trustee and the Property
Trustee may engage in or possess an interest in other business ventures of any
nature or description, independently or with others, similar or dissimilar to
the business of the Trust, and the Trust and the Holders of Securities shall
have no rights by virtue of this Declaration in and to such independent ventures
or the income or profits derived therefrom, and the pursuit of any such venture,
even if competitive with the business of the Trust, shall not be deemed wrongful
or improper. No Covered Person, the Sponsor, the Delaware Trustee, or the
Property Trustee shall be obligated to present any particular investment or
other opportunity to the Trust even if such opportunity is of a character that,
if presented to the Trust, could be taken by the Trust, and any Covered Person,
the Sponsor, the Delaware Trustee and the Property Trustee shall have the right
to take for its own account (individually or as a partner or fiduciary) or to
recommend to others any such particular investment or other opportunity. Any
Covered Person, the Delaware Trustee and the Property Trustee may engage or be
interested in any financial or other transaction with the Sponsor or any
Affiliate of the Sponsor, or may act as depositary for, trustee or agent for, or
act on any committee or body of holders of, securities or other obligations of
the Sponsor or its Affiliates.

                                  ARTICLE XI
                                  ACCOUNTING

SECTION 11.1   Fiscal Year.
               ----------- 

     The fiscal year ("Fiscal Year") of the Trust shall be the calendar year, or
such other year as is required by the Code.

                                      -41-
<PAGE>
 
SECTION 11.2   Certain Accounting Matters.
               -------------------------- 

     (a)       At all times during the existence of the Trust, the
Administrative Trustees shall keep, or cause to be kept, full books of account,
records and supporting documents, which shall reflect in reasonable detail, each
transaction of the Trust. The books of account shall be maintained on the
accrual method of accounting, in accordance with generally accepted accounting
principles, consistently applied. The Trust shall use the accrual method of
accounting for United States federal income tax purposes. The books of account
and the records of the Trust shall be examined by and reported upon as of the
end of each Fiscal Year of the Trust by a firm of independent certified public
accountants selected by the Administrative Trustees.

     (b)       The Administrative Trustees shall cause to be prepared and
delivered to each of the Holders of Securities, within 90 days after the end of
each Fiscal Year of the Trust, annual financial statements of the Trust,
including a balance sheet of the Trust as of the end of such Fiscal Year, and
the related statements of income or loss.

     (c)       The Administrative Trustees shall cause to be duly prepared and
delivered to each of the Holders of Securities, any annual United States federal
income tax information statement, required by the Code, containing such
information with regard to the Securities held by each Holder as is required by
the Code and the Treasury Regulations. Notwithstanding any right under the Code
to deliver any such statement at a later date, the Administrative Trustees shall
endeavor to deliver all such information statements within 30 days after the end
of each Fiscal Year of the Trust.

     (d)       The Administrative Trustees shall cause to be duly prepared and
filed with the appropriate taxing authority, an annual United States federal
income tax return, on a Form 1041 or such other form required by United States
federal income tax law, and any other annual income tax returns required to be
filed by the Administrative Trustees on behalf of the Trust with any state or
local taxing authority.

SECTION 11.3   Banking.
               ------- 

     The Trust shall maintain one or more bank accounts in the name and for the
sole benefit of the Trust; provided, however, that all payments of funds in
respect of the Debentures held by the Property Trustee shall be made directly to
the Property Trustee Account and no other funds of the Trust shall be deposited
in the Property Trustee Account. The sole signatories for such accounts shall be
designated by the Administrative Trustees; provided, however, that the Property
Trustee shall designate the signatories for the Property Trustee Account.

SECTION 11.4   Withholding.
               ----------- 

     The Trust and the Administrative Trustees shall comply with all withholding
requirements under United States federal, state and local law. The Trust shall
request, and the Holders shall provide to the Trust, such forms or certificates
as are necessary to establish an exemption from withholding with respect to each
Holder, and any representations and forms as shall reasonably be requested by
the Trust to assist it in determining the extent of, and in fulfilling, its
withholding obligations.  The Administrative Trustees shall cause to be filed
required forms with applicable jurisdictions and, unless an exemption from
withholding is properly established by a Holder, shall remit amounts withheld
with respect to the Holder to applicable jurisdictions. To the extent that the
Trust is required to withhold and pay over any amounts to any authority with
respect to Distributions or allocations to any Holder, the amount withheld shall
be deemed to be a Distribution in the amount of the withholding to the Holder.
In the event of any claimed over withholding, Holders shall be limited to an
action against the applicable jurisdiction. If the amount required to be
withheld was not withheld from actual Distributions made, the Trust may reduce
subsequent Distributions by the amount of such withholding.

                                      -42-
<PAGE>
 
                                  ARTICLE XII
                            AMENDMENTS AND MEETINGS

SECTION 12.1   Amendments.
               ---------- 

     (a)       Except as otherwise provided in this Declaration or by any
applicable terms of the Securities, this Declaration may only be amended by a
written instrument approved and executed by:

           (i)      the Sponsor and the Administrative Trustees (or, if there
     are more than two Administrative Trustees, a majority of the Administrative
     Trustees);

          (ii)      if the amendment affects the rights, powers, duties,
     obligations or immunities of the Property Trustee, the Property Trustee;
     and

         (iii)      if the amendment affects the rights, powers, duties,
     obligations or immunities of the Delaware Trustee, the Delaware Trustee.

     (b)       No amendment shall be made, and any such purported amendment
shall be void and ineffective:

           (i)      unless, in the case of any proposed amendment, the Property
     Trustee shall have first received an Officers' Certificate from each of the
     Trust and the Sponsor that such amendment is permitted by, and conforms to,
     the terms of this Declaration (including the terms of the Securities);

          (ii)      unless, in the case of any proposed amendment which affects
     the rights, powers, duties, obligations or immunities of the Property
     Trustee, the Property Trustee shall have first received:

               (A)  an Officers' Certificate from each of the Trust and the
          Sponsor that such amendment is permitted by, and conforms to, the
          terms of this Declaration (including the terms of the Securities); and

               (B)  an Opinion of Counsel (who may be counsel to the Sponsor or
               the Trust) that:

                    (x)  such amendment is permitted by, and conforms to, the
               terms of this Declaration (including the terms of the
               Securities); and

                    (y)  all conditions precedent to the execution and delivery
               of such amendment have been satisfied;

provided, however, that the Property Trustee shall not be required to sign any
- --------  -------                                                             
such amendment; and

          (ii)      to the extent the result of such amendment would be to:

               (A)  cause the Trust to fail to continue to be classified for
               purposes of United States federal income taxation as a grantor
               trust;

               (B)  reduce or otherwise adversely affect the powers of the
               Property Trustee in contravention of the Trust Indenture Act; or

               (C)  cause the Trust to be deemed to be an Investment Company
               required to be registered under the Investment Company Act;

                                      -43-
<PAGE>
 
     (c)       At such time after the Trust has issued any Securities that
remain outstanding, any amendment that would adversely affect the rights,
privileges or preferences of any Holder of Securities may be effected only with
such additional requirements as may be set forth in the terms of such
Securities;

     (d)       Section 10.1(c) and this Section 12.1 shall not be amended
without the consent of all of the Holders of the Securities;

     (e)       Article Four shall not be amended without the consent of the
Holders of a Majority in liquidation amount of the Common Securities;

     (f)       The rights of the Holders of the Common Securities under Article
V to increase or decrease the number of, and appoint and remove Trustees shall
not be amended without the consent of the Holders of a Majority in liquidation
amount of the Common Securities; and

     (g)       Notwithstanding Section 12.1(c), this Declaration may be amended
without the consent of the Holders of the Securities to:

           (i)      cure any ambiguity, correct or supplement any provision in
     this Declaration that may be inconsistent with any other provision of this
     Declaration or to make any other provisions with respect to matters or
     questions arising under this Declaration which shall not be inconsistent
     with the other provisions of the Declaration; and

          (ii)      to modify, eliminate or add to any provisions of the
     Declaration to such extent as shall be necessary to ensure that the Trust
     will be classified for United States federal income tax purposes as a
     grantor trust at all times that any Securities are outstanding or to ensure
     that the Trust will not be required to register as an Investment Company
     under the Investment Company Act;

provided, however, that in the case of clause (i), such action shall not
- --------  -------                                                       
adversely affect in any material respect the interests of the Holders of the
Securities, and any amendments of this Declaration shall become effective when
notice thereof is given to the Holders of the Securities.

SECTION 12.2   Meetings of the Holders of Securities; Action by Written Consent.
               ---------------------------------------------------------------- 

     (a)       Meetings of the Holders of any class of Securities may be called
at any time by the Administrative Trustees (or as provided in the terms of the
Securities) to consider and act on any matter on which Holders of such class of
Securities are entitled to act under the terms of this Declaration, the terms of
the Securities or the rules of any stock exchange on which the Capital
Securities are listed or admitted for trading. The Administrative Trustees shall
call a meeting of the Holders of such class if directed to do so by the Holders
of at least 10% in liquidation amount of such class of Securities. Such
direction shall be given by delivering to the Administrative Trustees one or
more notices in a writing stating that the signing Holders of Securities wish to
call a meeting and indicating the general or specific purpose for which the
meeting is to be called. Any Holders of Securities calling a meeting shall
specify in writing the Security certificates held by the Holders of Securities
exercising the right to call a meeting and only those Securities specified shall
be counted for purposes of determining whether the required percentage set forth
in the second sentence of this paragraph has been met.

     (b)       Except to the extent otherwise provided in the terms of the
Securities, the following provisions shall apply to meetings of Holders of
Securities:

           (i)      notice of any such meeting shall be given to all the Holders
     of Securities having a right to vote thereat at least seven days and not
     more than 60 days before the date of such meeting. Whenever a vote, consent
     or approval of the Holders of Securities is permitted or required under
     this Declaration or the rules of any stock exchange on which the Capital
     Securities are listed or admitted for trading, such vote, consent or
     approval may be given at a meeting of the Holders of Securities. Any action
     that may be taken at a meeting of the Holders of

                                      -44-
<PAGE>
 
     Securities may be taken without a meeting if a consent in writing setting
     forth the action so taken is signed by the Holders of Securities owning not
     less than the minimum amount of Securities in liquidation amount that would
     be necessary to authorize or take such action at a meeting at which all
     Holders of Securities having a right to vote thereon were present and
     voting. Prompt notice of the taking of action without a meeting shall be
     given to the Holders of Securities entitled to vote who have not consented
     in writing. The Administrative Trustees may specify that any written ballot
     submitted to the Security Holder for the purpose of taking any action
     without a meeting shall be returned to the Trust within the time specified
     by the Administrative Trustees;

          (ii)      each Holder of a Security may authorize any Person to act
     for it by proxy on all matters in which a Holder of Securities is entitled
     to participate, including waiving notice of any meeting, or voting or
     participating at a meeting. No proxy shall be valid after the expiration of
     11 months from the date thereof unless otherwise provided in the proxy.
     Every proxy shall be revocable at the pleasure of the Holder of Securities
     executing it. Except as otherwise provided herein, all matters relating to
     the giving, voting or validity of proxies shall be governed by the General
     Corporation Law of the State of Delaware relating to proxies, and judicial
     interpretations thereunder, as if the Trust were a Delaware corporation and
     the Holders of the Securities were stockholders of a Delaware corporation;

         (iii)      each meeting of the Holders of the Securities shall be
     conducted by the Administrative Trustees or by such other Person that the
     Administrative Trustees may designate; and

          (iv)      unless the Business Trust Act, this Declaration, the terms
     of the Securities, the Trust Indenture Act or the listing rules of any
     stock exchange on which the Capital Securities are then listed or trading,
     otherwise provides, the Administrative Trustees, in their sole discretion,
     shall establish all other provisions relating to meetings of Holders of
     Securities, including notice of the time, place or purpose of any meeting
     at which any matter is to be voted on by any Holders of Securities, waiver
     of any such notice, action by consent without a meeting, the establishment
     of a record date, quorum requirements, voting in person or by proxy or any
     other matter with respect to the exercise of any such right to vote.

                                  ARTICLE XII
                      REPRESENTATIONS OF PROPERTY TRUSTEE
                             AND DELAWARE TRUSTEE

SECTION 13.1   Representations and Warranties of Property Trustee.
               -------------------------------------------------- 

     The Trustee that acts as initial Property Trustee represents and warrants
to the Trust and to the Sponsor at the date of this Declaration, and each
Successor Property Trustee represents and warrants to the Trust and the Sponsor
at the time of the Successor Property Trustee's acceptance of its appointment as
Property Trustee that:

     (a)       The Property Trustee is a New York banking corporation with trust
powers and authority to execute and deliver, and to carry out and perform its
obligations under the terms of, this Declaration;

     (b)       The execution, delivery and performance by the Property Trustee
of this Declaration has been duly authorized by all necessary corporate action
on the part of the Property Trustee. This Declaration has been duly executed and
delivered by the Property Trustee and constitutes a legal, valid and binding
obligation of the Property Trustee, enforceable against it in accordance with
its terms, subject to applicable bankruptcy, reorganization, moratorium,
insolvency, and other similar laws affecting creditors' rights generally and to
general principles of equity and the discretion of the court (regardless of
whether the enforcement of such remedies is considered in a proceeding in equity
or at law);

     (c)       The execution, delivery and performance of this Declaration by
the Property Trustee does not conflict with or constitute a breach of the
charter or by-laws of the Property Trustee; and

                                      -45-
<PAGE>
 
     (d)       No consent, approval or authorization of, or registration with or
notice to, any New York State or federal banking authority is required for the
execution, delivery or performance by the Property Trustee of this Declaration.

SECTION 13.2   Representations and Warranties of Delaware Trustee.
               -------------------------------------------------- 

     The Trustee that acts as initial Delaware Trustee represents and warrants
to the Trust and to the Sponsor at the date of this Declaration, and each
Successor Delaware Trustee represents and warrants to the Trust and the Sponsor
at the time of the Successor Delaware Trustee's acceptance of its appointment as
Delaware Trustee that:

     (a)       The Delaware Trustee is duly organized, validly existing and in
good standing under the laws of the State of Delaware, with trust power and
authority to execute and deliver, and to carry out and perform its obligations
under the terms of, this Declaration;

     (b)       The execution, delivery and performance by the Delaware Trustee
of this Declaration has been duly authorized by all necessary corporate action
on the part of the Delaware Trustee. This Declaration has been duly executed and
delivered by the Delaware Trustee and constitutes a legal, valid and binding
obligation of the Delaware Trustee, enforceable against it in accordance with
its terms, subject to applicable bankruptcy, reorganization, moratorium,
insolvency, and other similar laws affecting creditors' rights generally and to
general principles of equity and the discretion of the court (regardless of
whether the enforcement of such remedies is considered in a proceeding in equity
or at law);

     (c)       No consent, approval or authorization of, or registration with or
notice to, any federal or Delaware banking authority is required for the
execution, delivery or performance by the Delaware Trustee of this Declaration;
and

     (d)       The Delaware Trustee is a natural person who is a resident of the
State of Delaware or, if not a natural person, an entity which has its principal
place of business in the State of Delaware.

                                  ARTICLE XIV
                              REGISTRATION RIGHTS

SECTION 14.1   Registration Rights Agreement; Liquidated Damages.
               --------------------------------------------------

     The Holders of the Series A Capital Securities, the Series A Debentures and
the Series A Capital Securities Guarantee (collectively, the "Registrable
Securities") are entitled to the benefits of the Registration Rights Agreement.
Pursuant to the Registration Rights Agreement, the Sponsor and the Trust have
agreed for the benefit of the Holders of Registrable Securities that, unless
otherwise provided in the Registration Rights Agreement: (i) they will, at the
Sponsor's cost, within 150 days after February 4, 1997 (the "Issue Date"), (A)
file a registration statement (the "Exchange Registration Statement") relating
an Exchange Offer pursuant to which each issuer of such respective Registrable
Securities would issue amounts of such Registrable Securities as are accepted in
the Exchange Offer which shall be identical in all respects to those exchanged,
except they will have been registered under the Securities Act and will no
longer be subject to transfer restrictions under the Securities Act or the
$100,000 minimum aggregate principal or liquidation amount transfer restriction,
or (B) if required or permitted pursuant to the terms of the Registration Rights
Agreement, file a shelf registration statement (the "Shelf Registration
Statement") with the Commission with respect to resales of the Registrable
Securities, (ii) they will use their best efforts to cause such Exchange
Registration Statement and/or Shelf Registration Statement, as the case
requires, to be declared effective by the Commission within 180 days after the
Issue Date and (iii) they will use their best efforts to maintain the Shelf
Registration Statement, if any, continuously effective under the Securities Act
until the third anniversary of the effectiveness of the Shelf Registration
Statement or such earlier date as is provided in the Registration Rights
Agreement (the "Effectiveness Period").  All references herein to such
Registrable Securities shall be deemed to include, as the context may require,
the Registrable Securities into which such Securities have been exchanged
pursuant to the Exchange Offer ("Exchange Securities") and 

                                      -46-
<PAGE>
 
all reference to numbers or amounts of such Securities shall be deemed to
include, as the context may require, such Exchanged Securities.

     If (i) (A) neither the Exchange Offer Registration Statement nor a Shelf
Registration Statement is filed with the Commission on or prior to the 150th day
after the Issue Date or (B) notwithstanding that the Debenture Issuer and the
Trust have accepted for exchange or will accept for exchange the Registrable
Securities for the Exchange Securities, the Debenture Issuer and the Trust are
required to file a Shelf Registration Statement and such Shelf Registration
Statement is not filed on or prior to the date required by the Registration
Rights Agreement, then commencing on the day after the applicable required
filing date, additional Distributions shall accumulate on the liquidation amount
of the Capital Securities at a rate of 0.25% per annum; or

          (ii)      (A) neither the Exchange Offer Registration Statement nor a
     Shelf Registration Statement is declared effective by the Commission on or
     prior to the 30th day after the applicable required filing date or (B)
     notwithstanding that the Debenture Issuer and the Trust have accepted for
     exchange or will accept for exchange the Registrable Securities for the
     Exchange Securities, the Debenture Issuer and the Trust are required to
     file a Shelf Registration Statement and such Shelf Registration Statement
     is not declared effective by the Commission on or prior to the 30th day
     after the date such Shelf Registration Statement was required to be file,
     then, commencing on the 31st day after the applicable required filing date,
     additional Distributions shall accumulate on the liquidation amount of the
     Capital Securities at a rate of 0.25% per annum; or

         (iii)      (A) the Trust has not accepted for exchange all validly
     tendered Series A Capital Securities for Series B Capital Securities or the
     Debenture Issuer has not accepted for exchange all validly tendered Series
     A  Debentures or the Series A Capital Securities Guarantee for,
     respectively, the Series B Debentures and the Series B Capital Securities
     Guarantee, in accordance with the terms of the Exchange Offer on or prior
     to the 30th day after the date on which the Exchange Offer Registration
     Statement was declared effective or (B) if applicable, the Shelf
     Registration Statement has been declared effective and such Shelf
     Registration Statement ceases to be effective at any time prior to the
     third anniversary of the Issue Date (other than after such time as all
     Capital Securities have been disposed of thereunder or otherwise cease to
     be Registrable Securities), additional Distributions shall accumulate on
     the liquidation amount of the Capital Securities at a rate of 0.25% per
     annum commencing on (x) the 31st day after such effective date, in the case
     of (A) above, or (y) the day such Shelf Registration Statement ceases to be
     effective in the case of (B) above;

provided, however, that the additional Distributions rate on the liquidation
- --------  -------                                                           
amount of the Capital Securities may not exceed in the aggregate 0.25% per
annum; provided, further, however, that upon (1) the filing of the Exchange
Offer Registration Statement or a Shelf Registration Statement (in the case of
clause (i) above), (2) the effectiveness of the Exchange Offer Registration
Statement or a Shelf Registration Statement (in the case of clause (ii) above),
or (3) the acceptance for exchange of all validly tendered Registrable
Securities for Exchange Securities (in the case of clause (iii)(A) above), or
upon the effectiveness of the Shelf Registration Statement which had ceased to
remain effective (in the case of clause (iii)(B) above), additional
Distributions on the liquidation amount of the Capital Securities as a result of
such clause (or the relevant subclause thereof), as the case may be, shall cease
to accumulate.

     Any amounts of additional Distributions due pursuant to clauses (i), (ii)
or (iii) above will be payable in cash on January 15 and July 15 of each year to
the Holders on the first day of the month in which the relevant Distribution
date falls.

                                  ARTICLE XV
                                 MISCELLANEOUS

SECTION 15.1   Notices.
               ------- 

     All notices provided for in this Declaration shall be in writing, duly
signed by the party giving such notice, and shall be delivered, telecopied or
mailed by first class mail, as follows:

                                      -47-
<PAGE>
 
     (a)       if given to the Trust, in care of the Administrative Trustees at
the Trust's mailing address set forth below (or such other address as the Trust
may give notice of to the Holders of the Securities):

               BFC Capital Trust I
               101 N. Broadway
               Oklahoma City, Oklahoma 73102
               Attention:  Randy P. Foraker, Administrative Trustee

     (b)       if given to the Delaware Trustee, at the mailing address set
forth below (or such other address as Delaware Trustee may give notice of to the
Holders of the Securities):

               The Bank of New York (Delaware)       
               White Clay Center                     
               Route 273                             
               Newark, Delaware 19711                
               Attention:  Corporate Trust Department 

     (c)       if given to the Property Trustee, at the Property Trustee's
mailing address set forth below (or such other address as the Property Trustee
may give notice of to the Holders of the Securities):

               The Bank of New York                      
               101 Barclay Street, Floor 21 West         
               New York, New York 10286                  
               Attention:  Corporate Trust Administration 

     (d)       if given to the Holder of the Common Securities, at the mailing
address of the Sponsor set forth below (or such other address as the Holder of
the Common Securities may give notice to the Trust):

               BancFirst Corporation        
               101 N. Broadway              
               Oklahoma City, Oklahoma 73102
               Attention:  David E. Rainbolt 

     (e)       if given to any other Holder, at the address set forth on the
books and records of the Trust.

     All such notices shall be deemed to have been given when received in
person, telecopied with receipt confirmed, or mailed by first class mail,
postage prepaid except that if a notice or other document is refused delivery or
cannot be delivered because of a changed address of which no notice was given,
such notice or other document shall be deemed to have been delivered on the date
of such refusal or inability to deliver.

SECTION 15.2   Governing Law.
               ------------- 

     This Declaration and the rights of the parties hereunder shall be governed
by and interpreted in accordance with the laws of the State of Delaware and all
rights and remedies shall be governed by such laws without regard to principles
of conflict of laws.

SECTION 15.3   Intention of the Parties.
               ------------------------ 

     It is the intention of the parties hereto that the Trust be classified for
United States federal income tax purposes as a grantor trust. The provisions of
this Declaration shall be interpreted to further this intention of the parties.

                                      -48-
<PAGE>
 
SECTION 15.4   Headings.
               -------- 

     Headings contained in this Declaration are inserted for convenience of
reference only and do not affect the interpretation of this Declaration or any
provision hereof.

SECTION 15.5   Successors and Assigns.
               ---------------------- 

     Whenever in this Declaration any of the parties hereto is named or referred
to, the successors and assigns of such party shall be deemed to be included, and
all covenants and agreements in this Declaration by the Sponsor and the Trustees
shall bind and inure to the benefit of their respective successors and assigns,
whether so expressed.

SECTION 15.6   Partial Enforceability.
               ---------------------- 

     If any provision of this Declaration, or the application of such provision
to any Person or circumstance, shall be held invalid, the remainder of this
Declaration, or the application of such provision to Persons or circumstances
other than those to which it is held invalid, shall not be affected thereby.

SECTION 15.7   Counterparts.
               ------------ 

     This Declaration may contain more than one counterpart of the signature
page and this Declaration may be executed by the affixing of the signature of
each of the Trustees to one of such counterpart signature pages. All of such
counterpart signature pages shall be read as though one, and they shall have the
same force and effect as though all of the signers had signed a single signature
page.

     IN WITNESS WHEREOF, the undersigned has caused this Declaration to be
executed as of the day and year first above written.



                              __________________________________________________
                              David E. Rainbolt, as Administrative Trustee



                              __________________________________________________
                              Joe T. Shockley, Jr., as Administrative Trustee



                              __________________________________________________
                              Randy P. Foraker, as Administrative Trustee

                                      -49-
<PAGE>
 
THE BANK OF NEW YORK (Delaware)
as Delaware Trustee



By:_____________________________________________________________________________
  Name:
  Title:


THE BANK OF NEW YORK
as Property Trustee



By:_____________________________________________________________________________
  Name:
  Title:


BANCFIRST CORPORATION
as Sponsor



By:_____________________________________________________________________________
  Name:
  Title:

                                      -50-
<PAGE>
 
ANNEX I

                                   TERMS OF
                  9.65% SERIES A/SERIES B CAPITAL SECURITIES
                            9.65% COMMON SECURITIES

     Pursuant to Section 7.1 of the Amended and Restated Declaration of Trust,
dated as of February 4, 1997 (as amended from time to time, the "Declaration"),
the designation, rights, privileges, restrictions, preferences and other terms
and provisions of the Capital Securities and the Common Securities
(collectively, the "Securities") are set out below (each capitalized term used
but not defined herein has the meaning set forth in the Declaration or, if not
defined in such Declaration, as defined in the Offering Memorandum referred to
below in Section 2(c) of this Annex I):

     1.      Designation and Number.
             ---------------------- 

     (a)     Capital Securities. 25,000 Series A Capital Securities of the Trust
             ------------------ 
and 25,000 Series B Capital Securities of the Trust, each series with an
aggregate liquidation amount with respect to the assets of the Trust of twenty-
five million dollars ($25,000,000), as provided in the Purchase Agreement, and
each with a liquidation amount with respect to the assets of the Trust of $1,000
per security, are hereby designated for the purposes of identification only as
"9.65% Series A Capital Securities" and "9.65% Series B Capital Securities,"
respectively (collectively, the "Capital Securities"). The certificates
evidencing the Capital Securities shall be substantially in the form of Exhibit
A-1 to the Declaration, with such changes and additions thereto or deletions
therefrom as may be required by ordinary usage, custom or practice or to conform
to the rules of any stock exchange on which the Capital Securities are listed.

     (b)     Common Securities. 774 Common Securities of the Trust with an 
             -----------------                           
aggregate liquidation amount with respect to the assets of the Trust of seven
hundred seventy-four thousand dollars ($774,000) and a liquidation amount with
respect to the assets of the Trust of $1,000 per security, are hereby designated
for the purposes of identification only as "9.65% Common Securities" (the
"Common Securities"). The certificates evidencing the Common Securities shall be
substantially in the form of Exhibit A-2 to the Declaration, with such changes
and additions thereto or deletions therefrom as may be required by ordinary
usage, custom or practice.

     2.      Distributions.
             ------------- 

     (a)     Distributions payable on each Security shall be fixed at a rate per
annum of 9.65% (the "Coupon Rate") of the liquidation amount of $1,000 per
Security (the "Liquidation Amount"), such rate being the rate of interest
payable on the Debentures to be held by the Property Trustee. Distributions in
arrears for more than one semi-annual period shall bear additional distributions
thereon compounded semi-annually at the Coupon Rate (to the extent permitted by
applicable law). Pursuant to the Registration Rights Agreement, in certain
limited circumstances the Debenture Issuer shall be required to pay Liquidated
Damages (as defined in the Registration Rights Agreement) with respect to the
Debentures. The term "Distributions", as used herein, includes distributions of
any such interest and Liquidated Damages payable unless otherwise stated. A
Distribution shall be payable only to the extent that payments are made in
respect of the Debentures held by the Property Trustee and to the extent the
Property Trustee has funds on hand legally available therefor.

     (b)     Distributions on the Securities shall be cumulative, shall
accumulate from the most recent date to which Distributions have been paid or,
if no Distributions have been paid, from February 4, 1997, and will be payable
semi-annually in arrears on January 15 and July 15 of each year, commencing on
July 15, 1997 (each, a "Distribution Date"), except as otherwise described
below. Distributions shall be computed on the basis of a 360-day year consisting
of twelve 30-day months. As long as no Event of Default has occurred and is
continuing under the Indenture, the Debenture Issuer has the right under the
Indenture to defer payments of interest by extending the interest payment period
at any time and from time to time on the Debentures for a period not exceeding
10 consecutive semi-annual periods, including the first such semi-annual period
during such period (each an "Extension Period"), during which Extension Period
no interest shall be due and payable on the Debentures, provided that no
Extension Period shall extend beyond the Maturity Date of the Debentures. As a
consequence of such deferral, Distributions shall also be deferred. Despite

                                      I-1
<PAGE>
 
such deferral, Distributions shall continue to accumulate with additional
Distributions thereon (to the extent permitted by applicable law but not at a
rate greater than the rate at which interest is then accruing on the Debentures)
at the Coupon Rate compounded semi-annually during any such Extension Period.
Prior to the termination of any Extension Period, the Debenture Issuer may
further defer payments of interest by further extending such Extension Period;
provided that such Extension Period, together with all such previous and further
extensions within such Extension Period, may not exceed 10 consecutive semi-
annual periods, including the first semi-annual period during such Extension
Period, or extend beyond the Maturity Date of the Debentures. Upon the
termination of any Extension Period and the payment of all amounts then due, the
Debenture Issuer may commence a new Extension Period, subject to the above
requirements.

     (c)     Distributions on the Securities shall be payable to the Holders
thereof as they appear on the books and records of the Trust on the first day of
the month in which the relevant Distribution Date occurs, which Distribution
Dates correspond to the interest payment dates on the Debentures. Subject to any
applicable laws and regulations and the provisions of the Declaration, each such
payment in respect of the Capital Securities shall be made as described under
the heading "Description of the Capital Securities -- Form, Denomination, Book-
Entry Procedures and Transfer" in the Offering Memorandum dated January 30,
1997, of the Debenture Issuer and the Trust relating to the Securities and the
Debentures. The relevant record dates for the Common Securities shall be the
same as the record dates for the Capital Securities. Distributions payable on
any Securities that are not punctually paid on any Distribution Date, as a
result of the Debenture Issuer having failed to make a payment under the
Debentures, shall cease to be payable to the Holder on the relevant record date,
and such defaulted Distribution shall instead be payable to the Person in whose
name such Securities are registered on the special record date or other
specified date determined in accordance with the Indenture. If any date on which
Distributions are payable on the Securities is not a Business Day, then payment
of the Distribution payable on such date will be made on the next succeeding day
that is a Business Day (and without any interest or other payment in respect of
any such delay), with the same force and effect as if made on such date.

     (d)     In the event that there is any money or other property held by or
for the Trust that is not accounted for hereunder, such property shall be
distributed Pro Rata (as defined herein) among the Holders of the Securities.

     3.      Liquidation Distribution Upon Termination.
             ----------------------------------------- 

     In the event of any termination of the Trust or the Sponsor otherwise gives
notice of its election to liquidate the Trust pursuant to Section 8.1(a)(iii) of
the Declaration, the Trust shall be liquidated by the Administrative Trustees as
expeditiously as the Administrative Trustees determine to be possible by
distributing, after satisfaction of liabilities to creditors of the Trust as
provided by applicable law, to the Holders of the Securities a Like Amount (as
defined below) of the Debentures, unless such distribution is determined by the
Property Trustee not to be practicable, in which event such Holders shall be
entitled to receive out of the assets of the Trust legally available for
distribution to Holders, after satisfaction of liabilities to creditors of the
Trust as provided by applicable law, an amount equal to the aggregate of the
liquidation amount of $1,000 per Security plus accumulated and unpaid
Distributions thereon to the date of payment (such amount being the "Liquidation
Distribution").

     "Like Amount" means (i) with respect to a redemption of the Securities,
Securities having a Liquidation Amount equal to the principal amount of
Debentures to be paid in accordance with their terms and (ii) with respect to a
distribution of Debentures upon the liquidation of the Trust, Debentures having
a principal amount equal to the Liquidation Amount of the Securities of the
Holder to whom such Debentures are distributed.

     If, upon any such liquidation, the Liquidation Distribution can be paid
only in part because the Trust has insufficient assets on hand legally available
to pay in full the aggregate Liquidation Distribution, then the amounts payable
directly by the Trust on the Securities shall be paid on a Pro Rata basis.

     4.      Redemption and Distribution.
             --------------------------- 

     (a)     Upon the repayment of the Debentures in whole or in part, at
maturity or upon early redemption (either at the option of the Debenture Issuer
or pursuant to a Special Event, as described below), the proceeds from such
repayment shall be simultaneously applied by the Property Trustee (subject to
the Property Trustee having received

                                      I-2
<PAGE>
 
notice no later than 45 days prior to such repayment) to redeem a Like Amount of
the Securities at a redemption price equal to (i) in the case of the repayment
of the Debentures at maturity, the Maturity Redemption Price (as defined below),
(ii) in the case of the optional redemption of the Debentures upon the
occurrence and continuation of a Special Event prior to January 15, 2007, the
Special Event Redemption Price (as defined below) and (iii) in the case of the
optional redemption of the Debentures on or after January 15, 2007, the Optional
Redemption Price (as defined below). The Maturity Redemption Price, the Special
Event Redemption Price and the Optional Redemption Price are referred to
collectively as the "Redemption Price". Holders shall be given not less than 30
nor more than 60 days prior written notice of such redemption.

     (b)(i)  The "Maturity Redemption Price", with respect to a redemption of
Securities, shall mean an amount equal to the principal of and accrued interest
on the Debentures as of the maturity date thereof.

     (ii)    In the case of an optional redemption, if fewer than all the
     outstanding Securities are to be so redeemed, the Common Securities and the
     Capital Securities shall be redeemed Pro Rata and the Capital Securities to
     be redeemed shall be determined as described in Section 4(f)(ii) below.
     Upon the entry of an order for the dissolution of the Trust by a court of
     competent jurisdiction, the Debentures thereafter will be subject to
     optional repayment, in whole, but not in part, on or after January 15,
     2007.

     The Debenture Issuer shall have the right (subject to the conditions in the
Indenture) to elect to redeem the Debentures in whole or in part at any time on
or after January 15, 2007 (the "Initial Optional Redemption Date"), upon not
less than 30 days and not more than 60 days notice and, simultaneous with such
redemption, to cause a Like Amount of the Securities to be redeemed by the Trust
at the Optional Redemption Price on a Pro Rata basis. "Optional Redemption
Price" shall mean a price equal to the percentage of the liquidation amount of
Securities to be redeemed plus accumulated and unpaid Distributions thereon, if
any, to the date of such redemption if redeemed during the 12 month period
beginning January 15 of the years indicated below:

<TABLE>
<CAPTION>
               YEAR                                    PERCENTAGE
               ----                                    -----------
               <S>                                     <C>
               2007..................................     104.825%
               2008..................................     104.343%
               2009..................................     103.860%
               2010..................................     103.378%
               2011..................................     102.895%
               2012..................................     102.413%
               2013..................................     101.930%
               2014..................................     101.448%
               2015..................................     100.965%
               2016..................................     100.483%
               2017 and thereafter...................     100.000%
</TABLE>

     (c)     If at any time a Tax Event or Regulatory Capital Event (as such
terms are defined below, and each, a "Special Event") occurs prior to the
Initial Optional Redemption Date, the Debenture Issuer shall have the right
(subject to the conditions set forth in the Indenture), upon not less than 30
nor more than 60 days notice, to redeem the Debentures in whole, but not in
part, within the 90 days following the occurrence of such Special Event (the "90
Day Period"), and, simultaneous with such redemption, to cause a Like Amount of
the Securities to be redeemed by the Trust at the Special Event Redemption Price
on a Pro Rata basis.

     "Special Event" means either a Regulatory Capital Event or a Tax Event.

     "Regulatory Capital Event" shall mean that the Debenture Issuer shall have
received an opinion of independent bank regulatory counsel experienced in such
matters to the effect that, as a result of (a) any amendment to, or change
(including any announced prospective change) in, the laws (or any regulations
thereunder) of the United States or any rules, guidelines or policies of the
Federal Reserve Board or (b) any official administrative pronouncement or
judicial 

                                      I-3
<PAGE>
 
decision interpreting or applying such laws or regulations, which amendment or
change is effective or which pronouncement or decision is announced on or after
February 4, 1997, the Capital Securities do not constitute, or within 90 days of
the date thereof, will not constitute, Tier I Capital (or its then equivalent);
provided, however, that the distribution of the Debentures in connection with
the termination of the Trust by the Debenture Issuer shall not in and of itself
constitute a Regulatory Capital Event unless such termination shall have
occurred in connection with a Tax Event.

     "Tax Event" shall occur upon receipt by the Debenture Issuer and an
Administrative Trustee of an opinion of counsel experienced in such matters to
the effect that, as a result of any amendment to, or change (including any
announced prospective change) in, the laws or any regulations thereunder of the
United States or any political subdivision or taxing authority thereof or
therein, or as a result of any official administrative pronouncement or judicial
decision interpreting or applying such laws or regulations, which amendment or
change is effective or which pronouncement or decision is announced on or after
February 4, 1997, there is more than an insubstantial risk that (i) the Trust
is, or will be within 90 days of the date of such opinion, subject to United
States federal income tax with respect to income received or accrued on the
Debentures, (ii) interest payable by the Debenture Issuer on the Debentures is
not, or within 90 days of the date of such opinion, will not be, deductible by
the Debenture Issuer, in whole or in part, for United States federal income tax
purposes, or (iii) the Trust is, or will be within 90 days of the date of such
opinion, subject to more than a de minimis amount of other taxes, duties or
other governmental charges.

     "Special Event Redemption Price" means, with respect to any redemption of
the Capital Securities pursuant to a Special Event, an amount in cash equal to
the Make-Whole Amount.

     "Make-Whole Amount" means an amount equal to the greater of (x) 100% of the
principal amount of Debentures to be redeemed or (y) the sum, as determined by a
Quotation Agent (as hereinafter defined), of the present values of the remaining
scheduled payments of principal and interest thereon discounted to the
redemption date on a semi-annual basis (assuming a 360-day year consisting of
twelve 30-day months) at the Adjusted Treasury Rate (as defined herein) plus, in
either case, any accrued and unpaid interest thereon, including Compounded
Interest and Additional Interest, if any, to the date of such redemption.

     "Adjusted Treasury Rate" means, with respect to any redemption date, the
rate per annum equal to the semi-annual equivalent yield to maturity of the
Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue
(expressed as a percentage of its principal amount) equal to the Comparable
Treasury Price for such redemption date, in each case calculated on the third
Business Day preceding such redemption date, plus (i) 2.70% if such redemption
date occurs on or prior to December 31, 1997 and (ii) 2.20% in all other cases.

     "Comparable Treasury Issue" means the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the remaining
term of the Debentures to be redeemed that would be utilized, at the time of
selection and in accordance with customary financial practice, in pricing new
issues of corporate debt securities of comparable maturity to the remaining term
of the Debentures.

     "Comparable Treasury Price" means, with respect to any redemption date, (A)
the yield, under the heading which represents the average for the immediately
prior week, appearing in the most recently published statistical release
designated "H.15(519)" or any successor publication which is published weekly by
the Federal Reserve and which establishes yields on actively traded United
States Treasury securities adjusted to constant maturity under the caption
"Treasury Constant Maturities," for the maturity corresponding to the Comparable
Treasury Issue (if no maturity is within three months before or after the
maturity corresponding to such Comparable Treasury Issue, yields for the two
published maturities most closely corresponding to such Comparable Treasury
Issue shall be interpolated, and the Comparable Treasury Price shall be
interpolated or extrapolated from such yields on a straight-line basis, rounding
to the nearest month), (B) if such release (or successor release) is not
published the week preceding the calculation date or does not contain such
yield, the average of five Reference Treasury Dealer Quotations for such
redemption date, after excluding the highest and lowest such Reference Treasury
Dealer Quotations, or (C) if the Debenture Trustee obtains fewer than three such
Reference Treasury Dealer Quotations, the average of all such Quotations.

                                      I-4
<PAGE>
 
     (d)     On and from the date fixed by the Administrative Trustees for any
distribution of Debentures and liquidation of the Trust: (i) the Securities will
no longer be deemed to be outstanding, (ii) the Clearing Agency or its nominee
(or any successor Clearing Agency or its nominee), as the Holder of the Capital
Securities, shall receive a registered global certificate or certificates
representing the Debentures to be delivered upon such distribution and any
certificates representing Securities not held by the Clearing Agency or its
nominee (or any successor Clearing Agency or its nominee) will be deemed to
represent beneficial interests in a Like Amount of Debentures until such
certificates are presented to the Debenture Issuer or its agent for transfer or
reissue.

     (e)     The Trust may not redeem fewer than all the outstanding Securities
unless all accumulated and unpaid Distributions have been paid on all Securities
for all semi-annual Distribution periods terminating on or before the date of
redemption.

     (f)     The procedure with respect to redemptions or distributions of
Debentures shall be as follows:

     (i)     Notice of any redemption of, or notice of distribution of
     Debentures in exchange for, the Securities (a "Redemption/Distribution
     Notice") shall be given by the Trust by mail to each Holder of Securities
     to be redeemed or exchanged not fewer than 30 nor more than 60 days before
     the date fixed for redemption or exchange thereof which, in the case of a
     redemption, shall be the date fixed for redemption of the Debentures. For
     purposes of the calculation of the date of redemption or exchange and the
     dates on which notices are given pursuant to this Section 4(f)(i), a
     Redemption/Distribution Notice shall be deemed to be given on the day such
     notice is first mailed by first-class mail, postage prepaid, to Holders of
     Securities. Each Redemption/Distribution Notice shall be addressed to the
     Holders of Securities at the address of each such Holder appearing in the
     books and records of the Trust. No defect in the Redemption/Distribution
     Notice or in the mailing of either thereof with respect to any Holder shall
     affect the validity of the redemption or exchange proceedings with respect
     to any other Holder.

     (ii)    In the event that fewer than all the outstanding Securities are to
     be redeemed, the Securities to be redeemed shall be redeemed Pro Rata from
     each Holder of Capital Securities, it being understood that, in respect of
     Capital Securities registered in the name of and held of record by the
     Clearing Agency or its nominee (or any successor Clearing Agency or its
     nominee) or any nominee, the distribution of the proceeds of such
     redemption shall be made to the Clearing Agency and disbursed by such
     Clearing Agency in accordance with the procedures applied by such agency or
     nominee.

     (iii)   If Securities are to be redeemed and the Trust gives a
     Redemption/Distribution Notice, (which notice will be irrevocable), then
     (A) with respect to Capital Securities issued in book-entry form, by 12:00
     noon, New York City time, on the redemption date, provided that the
     Debenture Issuer has paid the Property Trustee a sufficient amount of cash
     in connection with the related redemption or maturity of the Debentures by
     10:00 a.m., New York City time, on the maturity date or the date of
     redemption, as the case requires, the Property Trustee shall deposit
     irrevocably with the Clearing Agency or its nominee (or successor Clearing
     Agency or its nominee) immediately available funds sufficient to pay the
     applicable Redemption Price with respect to such Capital Securities and
     shall give the Clearing Agency irrevocable instructions and authority to
     pay the Redemption Price to the relevant Clearing Agency Participants, and
     (B) with respect to Capital Securities issued in certificated form and
     Common Securities, provided that the Debenture Issuer has paid the Property
     Trustee a sufficient amount of cash in connection with the related
     redemption or maturity of the Debentures, the Property Trustee shall pay
     the relevant Redemption Price to the Holders of such Securities by check
     mailed to the address of the relevant Holder appearing on the books and
     records of the Trust on the redemption date. If a Redemption/Distribution
     Notice shall have been given and funds deposited as required, if
     applicable, then immediately prior to the close of business on the date of
     such deposit, or on the redemption date, as applicable, Distributions shall
     cease to accumulate on the Securities so called for redemption and all
     rights of Holders of such Securities so called for redemption shall cease,
     except the right of the Holders of such Securities to receive the
     Redemption Price, but without interest on such Redemption Price, and such
     Securities shall cease to be outstanding.

                                      I-5
<PAGE>
 
     (iv)    Payment of accumulated and unpaid Distributions on the Redemption
     Date of the Securities shall be subject to the rights of Holders of
     Securities on the close of business on a regular record date in respect of
     a Distribution Date occurring on or prior to such Redemption Date.

     Neither the Administrative Trustees nor the Trust shall be required to
register or cause to be registered the transfer of (i) any Securities beginning
on the opening of business 15 days before the day of mailing of a notice of
redemption or any notice of selection of Securities for redemption or (ii) any
Securities selected for redemption except the unredeemed portion of any Security
being redeemed. If any date fixed for redemption of Securities is not a Business
Day, then payment of the Redemption Price payable on such date shall be made on
the next succeeding day that is a Business Day (and without any interest or
other payment in respect of any such delay), with the same force and effect as
if made on such date fixed for redemption. If payment of the Redemption Price in
respect of any Securities is improperly withheld or refused and not paid either
by the Property Trustee or by the Sponsor as guarantor pursuant to the relevant
Securities Guarantee, Distributions on such Securities shall continue to
accumulate from the original redemption date to the actual date of payment, in
which case the actual payment date shall be considered the date fixed for
redemption for purposes of calculating the Redemption Price.

     (v)     Redemption/Distribution Notices shall be sent by the Property
     Trustee on behalf of the Trust (A) in respect of Capital Securities issued
     in book entry form, to the Clearing Agency or its nominee (or any successor
     Clearing Agency or its nominee), (B) in respect of Capital Securities
     issued in certificated form, to the Holders thereof, and (C) in respect of
     the Common Securities, to the Holder thereof.

     (vi)    Subject to the foregoing and applicable law (including, without
     limitation, United States federal securities laws and banking laws and to
     the provisions contained in the Purchase Agreement), the Sponsor or any of
     its subsidiaries may at any time and from time to time purchase outstanding
     Capital Securities by tender, in the open market or by private agreement.

     5.      Voting Rights - Capital Securities.
             ---------------------------------- 

     (a)     Except as provided under Sections 5(b) and 7 and as otherwise
required by law and the Declaration, the Holders of the Capital Securities shall
have no voting rights.

     (b)     So long as any Debentures are held by the Property Trustee, the
Trustees shall not (i) direct the time, method and place of conducting any
proceeding for any remedy available to the Debenture Trustee, or executing any
trust or power conferred on such Debenture Trustee with respect to the
Debentures, (ii) waive any past default that is waivable under Section 5.7 of
the Indenture, (iii) exercise any right to rescind or annul a declaration of
acceleration of the maturity of the principal of the Debentures or (iv) consent
to any amendment, modification or termination of the Indenture or the
Debentures, where such consent shall be required, without, in each case,
obtaining the prior approval of the Holders of a Majority in liquidation amount
of all outstanding Capital Securities; provided, however, that where a consent
under the Indenture would require the consent of each holder of Debentures
affected thereby, no such consent shall be given by the Property Trustee without
the prior approval of each Holder of the Capital Securities. The Trustees shall
not revoke any action previously authorized or approved by a vote of the Holders
of the Capital Securities except by subsequent vote of such Holders. The
Property Trustee shall notify each Holder of Capital Securities of any notice of
default with respect to the Debentures. In addition to obtaining the foregoing
approvals of such Holders of the Capital Securities, prior to taking any of the
foregoing actions, the Trustees shall obtain an opinion of counsel experienced
in such matters to the effect that the Trust shall not be classified as an
association taxable as a corporation for United States federal income tax
purposes on account of such action.

     If an Event of Default under the Declaration has occurred and is continuing
and such event is attributable to the failure of the Debenture Issuer to pay
principal of or premium, if any, or interest on the Debentures on the due date
(or in the case of redemption, on the redemption date), then a Holder of Capital
Securities may directly institute a proceeding for enforcement of payment to
such Holder of the principal of or premium, if any, or interest on a Like Amount
of Debentures (a "Direct Action") on or after the respective due date specified
in the Debentures. In connection with such Direct Action, the rights of the
Common Securities Holder shall be subrogated to the rights of such Holder of
Capital 

                                      I-6
<PAGE>
 
Securities in respect of any payment from the Debenture Issuer in such Direct
Action. Except as provided in the second preceding sentence, the Holders of
Capital Securities shall not be able to exercise directly any other remedy
available to the holders of the Debentures.

     Any approval or direction of Holders of Capital Securities may be given at
a separate meeting of Holders of Capital Securities convened for such purpose,
at a meeting of all of the Holders of Securities in the Trust or pursuant to
written consent. The Property Trustee shall cause a notice of any meeting at
which Holders of Capital Securities are entitled to vote, or of any matter upon
which action by written consent of such Holders is to be taken, to be mailed to
each Holder of record of Capital Securities. Each such notice shall include a
statement setting forth (i) the date of such meeting or the date by which such
action is to be taken, (ii) a description of any resolution proposed for
adoption at such meeting on which such Holders are entitled to vote or of such
matter upon which written consent is sought and (iii) instructions for the
delivery of proxies or consent.

     No vote or consent of the Holders of the Capital Securities shall be
required for the Trust to redeem and cancel Capital Securities or to distribute
the Debentures in accordance with the Declaration and the terms of the
Securities.

     Notwithstanding that Holders of Capital Securities are entitled to vote or
consent under any of the circumstances described above any of the Capital
Securities that are owned by the Sponsor or any Affiliate of the Sponsor shall
not be entitled to vote or consent and shall, for purposes of such vote or
consent, be treated as if they were not outstanding.

     6.      Voting Rights - Common Securities.
             --------------------------------- 

     (a)     Except as provided under Sections 6(b), 6(c), and 7 as otherwise
required by law and the Declaration, the Holders of the Common Securities shall
have no voting rights.

     (b)     Unless a Debenture Event of Default shall have occurred and be
continuing, any Trustee may be removed at any time by the Holder of the Common
Securities. If a Debenture Event of Default has occurred and is continuing, the
Property Trustee and the Delaware Trustee may be removed at such time by the
Holders of a Majority in liquidation amount of the outstanding Capital
Securities. In no event shall the Holders of the Capital Securities have the
right to vote to appoint, remove or replace the Administrative Trustees, which
voting rights are vested exclusively in the Sponsor as the Holder of the Common
Securities. No resignation or removal of a Trustee and no appointment of a
successor trustee shall be effective until the acceptance of appointment by the
successor trustee in accordance with the provisions of the Declaration.

     (c)     So long as any Debentures are held by the Property Trustee, the
Trustees shall not (i) direct the time, method and place of conducting any
proceeding for any remedy available to the Debenture Trustee, or executing any
trust or power conferred on such Debenture Trustee with respect to the
Debentures, (ii) waive any past default that is waivable under Section 5.07 of
the Indenture, (iii) exercise any right to rescind or annul a declaration of
acceleration of the maturity of the principal of the Debentures or (iv) consent
to any amendment, modification or termination of the Indenture or the
Debentures, where such consent shall be required, without, in each case,
obtaining the prior approval of the Holders of a Majority in liquidation amount
of all outstanding Common Securities; provided, however, that where a consent
under the Indenture would require the consent of each holder of Debentures
affected thereby, no such consent shall be given by the Property Trustee without
the prior approval of each Holder of the Common Securities. The Trustees shall
not revoke any action previously authorized or approved by a vote of the Holders
of the Common Securities except by subsequent vote of such Holders. The Property
Trustee shall notify each Holder of Common Securities of any notice of default
with respect to the Debentures. In addition to obtaining the foregoing approvals
of such Holders of the Common Securities, prior to taking any of the foregoing
actions, the Trustees shall obtain an opinion of counsel experienced in such
matters to the effect that the Trust shall not be classified as an association
taxable as a corporation for United States federal income tax purposes on
account of such action.

    If an Event of Default under the Declaration has occurred and is continuing
and such event is attributable to the failure of the Debenture Issuer to pay
principal of or premium, if any, or interest on the Debentures on the due date
(or in the case of redemption, on the redemption date), then a Holder of Common
Securities may institute a Direct Action 

                                      I-7
<PAGE>
 
for enforcement of payment to such Holder of the principal of or premium, if
any, or interest on a Like Amount of Debentures on or after the respective due
date specified in the Debentures. In connection with Direct Action, the rights
of the Common Securities Holder shall be subordinated to the rights of such
Holder of Capital Securities in respect of any payment from the Debenture Issuer
in such Direct Action. Except as provided in the second preceding sentence, the
Holders of Common Securities shall not be able to exercise directly any other
remedy available to the holders of the Debentures.

     Any approval or direction of Holders of Common Securities may be given at a
separate meeting of Holders of Common Securities convened for such purpose, at a
meeting of all of the Holders of Securities in the Trust or pursuant to written
consent. The Administrative Trustees shall cause a notice of any meeting at
which Holders of Common Securities are entitled to vote, or of any matter upon
which action by written consent of such Holders is to be taken, to be mailed to
each Holder of record of Common Securities. Each such notice shall include a
statement setting forth (i) the date of such meeting or the date by which such
action is to be taken, (ii) a description of any resolution proposed for
adoption at such meeting on which such Holders are entitled to vote or of such
matter upon which written consent is sought and (iii) instructions for the
delivery of proxies or consents.

     No vote or consent of the Holders of the Common Securities shall be
required for the Trust to redeem and cancel Common Securities or to distribute
the Debentures in accordance with the Declaration and the terms of the
Securities.

     7.      Amendments to Declaration and Indenture.
             --------------------------------------- 

     In addition to the requirements set out in Section 12.1 of the Declaration,
the Declaration may be amended from time to time by the Sponsor, the Property
Trustee and the Administrative Trustees, without the consent of the Holders of
the Securities (i) to cure any ambiguity, correct or supplement any provisions
in the Declaration that may be inconsistent with any other provisions, or to
make any other provisions with respect to matters or questions arising under the
Declaration which shall not be inconsistent with the other provisions of the
Declaration, or (ii) to modify, eliminate or add to any provisions of the
Declaration to such extent as shall be necessary to ensure that the Trust shall
be classified for United States federal income tax purposes as a grantor trust
at all times that any Securities are outstanding or to ensure that the Trust
shall not be required to register as an "investment company" under the
Investment Company Act; provided however, that in the case of clause (i), such
                        -------- -------                                      
action shall not adversely affect in any material respect the interests of any
Holder of Securities, and any amendments of the Declaration shall become
effective when notice thereof is given to the Holders of the Securities. The
Declaration may be amended by the Trustees and the Sponsor with (i) the consent
of Holders representing a Majority in liquidation amount of all outstanding
Securities, and (ii) receipt by the Trustees of an Opinion of Counsel to the
effect that such amendment or the exercise of any power granted to the Trustees
in accordance with such amendment shall not affect the Trust's status as a
grantor trust for United States federal income tax purposes or the Trust's
exemption from status as an investment company under the Investment Company Act,
provided that, without the consent of each Holder of Trust Securities, the
- -------- ----                                                             
Declaration may not be amended to (i) change the amount or timing of any
Distribution on, or the payment required to be made in respect of the Securities
or any redemption provisions or otherwise adversely affect the amount of any
Distribution or other payment required to be made in respect of the Securities
as of a specified date or (ii) restrict the right of a Holder of Securities to
institute suit for the enforcement of any such payment on or after such date.

     8.      Pro Rata.
             -------- 

     A reference in these terms of the Securities to any payment, distribution
or treatment as being "Pro Rata" shall mean pro rata to each Holder of
Securities according to the aggregate liquidation amount of the Securities held
by the relevant Holder in relation to the aggregate liquidation amount of all
Securities outstanding unless, in relation to a payment, an Event of Default
under the Declaration has occurred and is continuing, in which case any funds
available to make such payment shall be paid first to each Holder of the Capital
Securities pro rata according to the aggregate liquidation amount of Capital
Securities held by the relevant Holder relative to the aggregate liquidation
amount of all Capital Securities outstanding, and only after satisfaction of all
amounts owed to the Holders of the Capital Securities, to each Holder of Common
Securities pro rata according to the aggregate liquidation amount of Common
Securities held by the relevant Holder relative to the aggregate liquidation
amount of all Common Securities outstanding.

                                      I-8
<PAGE>
 
     9.      Ranking.
             ------- 

     The Capital Securities rank pari passu with the Common Securities and
payment thereon shall be made Pro Rata with the Common Securities, except that,
if an Event of Default under the Declaration occurs and is continuing, no
payments in respect of Distributions on, or payments upon liquidation,
redemption or otherwise with respect to, the Common Securities shall be made
until the Holders of the Capital Securities shall be paid in full the
Distributions, Redemption Price, Liquidation Distribution and other payments to
which they are entitled at such time.

     10.     Acceptance of Capital Securities Guarantee, Common Securities
             -------------------------------------------------------------
Guarantee, Indenture and Debentures.
- ----------------------------------- 

     Each Holder of Capital Securities and Common Securities, by the acceptance
thereof, agrees to the provisions of the Capital Securities Guarantee, the
Common Securities Guarantee, the Indenture and the Debentures, respectively,
including the subordination provisions therein.

     11.     No Preemptive Rights.
             -------------------- 

     The Holders of the Securities shall have no preemptive rights to subscribe
for any additional securities.

     12.     Miscellaneous.
             ------------- 

     These terms constitute a part of the Declaration.

     The Sponsor shall provide a copy of the Declaration, the Capital Securities
Guarantee or the Common Securities Guarantee (as may be appropriate), the
Indenture (including any supplemental indenture) to a Holder without charge on
written request to the Sponsor at its principal place of business.

                                      I-9
<PAGE>
 
                                  EXHIBIT A-1

                     FORM OF CAPITAL SECURITY CERTIFICATE

                          [FORM OF FACE OF SECURITY]

     [IF THIS CAPITAL SECURITY IS A RULE 144A GLOBAL CAPITAL SECURITY, INSERT:
THIS CAPITAL SECURITY IS A GLOBAL CAPITAL SECURITY WITHIN THE MEANING OF THE
DECLARATION HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE
DEPOSITORY TRUST COMPANY ("DTC") OR A NOMINEE OF DTC. THIS CAPITAL SECURITY IS
EXCHANGEABLE FOR CAPITAL SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER
THAN DTC OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE
DECLARATION AND NO TRANSFER OF THIS CAPITAL SECURITY (OTHER THAN A TRANSFER OF
THIS CAPITAL SECURITY AS A WHOLE BY DTC TO A NOMINEE OF DTC OR BY A NOMINEE OF
DTC TO DTC OR ANOTHER NOMINEE OF DTC) MAY BE REGISTERED EXCEPT IN LIMITED
CIRCUMSTANCES.

     UNLESS THIS CAPITAL SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE
OF DTC TO THE TRUST OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR
PAYMENT, AND ANY CAPITAL SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO.
OR IN SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC AND
ANY PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH PERSON AS IS REQUESTED BY AN
AUTHORIZED REPRESENTATIVE OF DTC, ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED
OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

     [THIS CAPITAL SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS OR ANY
OTHER APPLICABLE SECURITIES LAW. NEITHER THIS CAPITAL SECURITY NOR ANY INTEREST
OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED,
ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION.

     THE HOLDER OF THIS CAPITAL SECURITY BY ITS ACCEPTANCE HEREOF AGREES TO
OFFER, SELL OR OTHERWISE TRANSFER THIS CAPITAL SECURITY, PRIOR TO THE DATE (THE
"RESALE RESTRICTION TERMINATION DATE") WHICH IS THREE YEARS AFTER THE LATER OF
THE ORIGINAL ISSUANCE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY
"AFFILIATE" OF THE COMPANY WAS THE OWNER OF THIS CAPITAL SECURITY (OR ANY
PREDECESSOR OF THIS CAPITAL SECURITY) ONLY (A) TO THE COMPANY, (B) PURSUANT TO A
REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES
ACT, (C) SO LONG AS THIS CAPITAL SECURITY IS ELIGIBLE FOR RESALE PURSUANT TO
RULE 144A UNDER THE SECURITIES ACT ("RULE 144A") TO A PERSON IT REASONABLY
BELIEVES IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A) THAT
PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL
BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON
RULE 144A, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR
OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE
SECURITIES ACT, (E) TO AN INSTITUTIONAL "ACCREDITED INVESTOR" WITHIN THE MEANING
OF SUBPARAGRAPH (A)(1), (2), (3) OR (7) OF RULE 501 UNDER THE SECURITIES ACT
THAT IS ACQUIRING THIS CAPITAL SECURITY FOR ITS OWN ACCOUNT, OR FOR THE ACCOUNT
OF SUCH AN INSTITUTIONAL ACCREDITED INVESTOR, FOR INVESTMENT PURPOSES AND NOT
WITH A VIEW TO, OR FOR OFFER OR SALE IN CONNECTION WITH, ANY DISTRIBUTION IN
VIOLATION OF THE SECURITIES ACT, OR (F) PURSUANT TO ANY OTHER AVAILABLE
EXEMPTION FROM THE REGISTRATION REQUIREMENTS UNDER THE SECURITIES ACT, SUBJECT
TO THE RIGHT OF THE TRUST AND THE COMPANY PRIOR TO ANY SUCH OFFER, SALE OR
TRANSFER (i) PURSUANT TO CLAUSE (D),

                                      A1-1
<PAGE>
 
(E) OR (F) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATIONS
AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND (ii) PURSUANT TO
CLAUSE (E), TO REQUIRE THAT A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON
THE REVERSE OF THIS CAPITAL SECURITY IS COMPLETED AND DELIVERED BY THE
TRANSFEREE TO THE TRUST. SUCH HOLDER FURTHER AGREES THAT IT WILL DELIVER TO EACH
PERSON TO WHOM THIS CAPITAL SECURITY IS TRANSFERRED A NOTICE SUBSTANTIALLY TO
THE EFFECT OF THIS LEGEND.]

     [IF THIS CAPITAL SECURITY IS A REGULATION S GLOBAL SECURITY, INSERT: THIS
CAPITAL SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT AND MAY NOT BE
OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT
OF, U.S. PERSONS UNLESS REGISTERED UNDER THE SECURITIES ACT OR AN EXEMPTION FROM
THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT IS AVAILABLE.]

                                     A1-2
<PAGE>
 
Certificate Number                                  Number of Capital Securities

CUSIP Number

                   Certificate Evidencing Capital Securities
                                      of
                              BFC CAPITAL TRUST I

                       9.65% Series _ Capital Securities
                   (aggregate liquidation amount $25,000,000)

     BFC CAPITAL TRUST I, a statutory business trust formed under the laws of
the State of Delaware (the "Trust"), hereby certifies that ________________ (the
"Holder") is the registered owner of ___________________ securities of the Trust
representing undivided beneficial interests in the assets of the Trust
designated the 9.65% Series _ Capital Securities (liquidation amount $1,000 per
Capital Security) (the "Capital Securities"). The Capital Securities are
transferable on the books and records of the Trust, in person or by a duly
authorized attorney, upon surrender of this certificate duly endorsed and in
proper form for transfer. The designation, rights, privileges, restrictions,
preferences and other terms and provisions of the Capital Securities represented
hereby are issued and shall in all respects be subject to the provisions of the
Amended and Restated Declaration of Trust of the Trust dated as of February 4,
1997, as the same may be amended from time to time (the "Declaration"),
including the designation of the terms of the Capital Securities as set forth in
Annex I to the Declaration. Capitalized terms used but not defined herein shall
have the meaning given them in the Declaration. The Sponsor will provide a copy
of the Declaration, the Capital Securities Guarantee and the Indenture to a
Holder without charge upon written request to the Trust at its principal place
of business.

     Upon receipt of this certificate, the Holder is bound by the Declaration
and is entitled to the benefits thereunder and to the benefits of the Capital
Securities Guarantee to the extent provided therein.

     By its acceptance hereof, the Holder agrees to treat, for United States
federal income tax purposes, the Debentures as indebtedness and the Capital
Securities as evidence of indirect beneficial ownership in the Debentures.

     IN WITNESS WHEREOF, the Trust has executed this certificate this ____ day
of ____________, _____.

                                   BFC CAPITAL TRUST I


                                   By: ________________________
                                   Name:
                                   Administrative Trustee



               PROPERTY TRUSTEE'S CERTIFICATE OF AUTHENTICATION

     This is one of the Capital Securities referred to in the within-mentioned
Declaration.


Dated: _________________

                                             THE BANK OF NEW YORK,
                                             as Property Trustee

                                             By: _______________________
                                                 Authorized Signatory

                                     A1-3
<PAGE>
 
                         [FORM OF REVERSE OF SECURITY]

     Distributions payable on each Capital Security will be fixed at a rate per
annum of 9.65% (the "Coupon Rate") of the liquidation amount of $1,000 per
Capital Security, such rate being the rate of interest payable on the Debentures
to be held by the Property Trustee. Distributions in arrears for more than one
semi-annual period will bear interest thereon compounded semi-annually at the
Coupon Rate (to the extent permitted by applicable law). Pursuant to the
Registration Rights Agreement, in certain limited circumstances the Debenture
Issuer will be required to pay Liquidated Damages (as defined in the
Registration Rights Agreement) with respect to the Debentures. The term
"Distributions", as used herein, includes such cash distributions and any such
interest and such Liquidated Damages payable unless otherwise stated. A
Distribution is payable only to the extent that payments are made in respect of
the Debentures held by the Property Trustee and to the extent the Property
Trustee has funds on hand legally available therefor.

     Distributions on the Capital Securities will be cumulative, will accumulate
from the most recent date to which Distributions have been paid or, if any
Distributions have been paid, from February 4, 1997 and will be payable semi-
annually in arrears, on January 15 and July 15 of each year, commencing on July
15, 1997, except as otherwise described below. Distributions shall be computed
on the basis of a 360-day year consisting of twelve 30-day months. As long as no
Event of Default has occurred and is continuing under the Indenture, the
Debenture Issuer has the right under the Indenture to defer payments of interest
by extending the interest payment period at any time and from time to time on
the Debentures for a period not exceeding 10 consecutive calendar semiannual
periods, including the first such semi-annual period during such extension
period (each an "Extension Period"), provided that no Extension Period shall
extend beyond the Maturity Date of the Debentures. As a consequence of such
deferral, Distributions will also be deferred. Despite such deferral, semi-
annual Distributions will continue to accumulate with interest thereon (to the
extent permitted by applicable law, but not at a rate exceeding the rate of
interest then accruing on the Debentures) at the Coupon Rate compounded semi-
annually during any such Extension Period. Prior to the termination of any such
Extension Period, the Debenture Issuer may further defer payments of interest by
further extending such Extension Period; provided that such Extension Period,
together with all such previous and further extensions within such Extension
Period, may not exceed 10 consecutive semi-annual periods, including the first
semiannual period during such Extension Period, or extend beyond the Maturity
Date of the Debentures. Payments of accumulated Distributions will be payable to
Holders as they appear on the books and records of the Trust on the record date
immediately preceding the end of the Extension Period. Upon the termination of
any Extension Period and the payment of all amounts then due, the Debenture
Issuer may commence a new Extension Period, subject to the above requirements.

     Subject to the prior approval of the Federal Reserve Board if such approval
is then required under applicable law or capital guidelines or policies of the
Federal Reserve Board and to certain other conditions set forth in the
Declaration and the Indenture, the Property Trustee may, at the direction of the
Sponsor, at any time terminate the Trust and cause the Debentures to be
distributed to the holders of the Securities in liquidation of the Trust or,
simultaneous with any redemption of the Debentures, cause a Like Amount of the
Securities to be redeemed by the Trust.

     The Capital Securities shall be redeemable as provided in the Declaration.

                                     A1-4
<PAGE>
 
                                 ____________

                                  ASSIGNMENT

     FOR VALUE RECEIVED, the undersigned assigns and transfers this Capital
Security Certificate to:

_____________________________________________
_____________________________________________
_____________________________________________
(Insert assignee's social security or tax identification number)

_____________________________________________
_____________________________________________
_____________________________________________
(Insert address and zip code of assignee)


and irrevocably appoints

_____________________________________________
_____________________________________________
__________________________________________ agent transfer this Capital Security
Certificate on the books of the Trust. The agent may substitute another to act
for him or her.

Date: _______________________

Signature: _________________________
(Sign exactly as your name appears on the other side of this Capital Security
Certificate)

Signature Guarantee: _______________________


_________________ 

*    Signature must be guaranteed by an "eligible guarantor institution" that is
a bank, stockbroker, savings and loan association or credit union meeting the
requirements of the Registrar, which requirements include membership or
participation in the Securities Transfer Agents Medallion Program ("STAMP") or
such other "signature guarantee program" as may be determined by the Registrar
in addition to, or in substitution for, STAMP, all in accordance with the
Securities and Exchange Act of 1934, as amended.

                                     A1-5
<PAGE>
 
Include the following if the Capital Security bears a Restricted Capital
Securities Legend --

In connection with any transfer of any of the Capital Securities evidenced by
this certificate, the undersigned confirms that such Capital Securities are
being:


CHECK ONE BOX BELOW
 
     (1)  [_]  exchanged for the undersigned's own account without transfer; or
 
     (2)  [_]  transferred pursuant to and in compliance with Rule 144A under
               the Securities Act of 1933; or
 
     (3)  [_]  transferred pursuant to and in compliance with Regulation S under
               the Securities Act of 1933; or

     (4)  [_]  to an institutional "accredited investor" within the meaning of
               subparagraph (a)(1), (2), (3) or (7) of Rule 501 under the
               Securities Act of 1933 that is acquiring the Capital Securities
               for its own account, or for the account of such an institutional
               "accredited investor," for investment purposes and not with a
               view to, or for offer or sale in connection with, any
               distribution in violation of the Securities Act of 1933; or

     (5)  [_]  transferred pursuant to another available exemption from the
               registration requirements of the Securities Act of 1933; or

     (6)  [_]  transferred pursuant to an effective registration statement.

Unless one of the boxes is checked, the Exchange Agent will refuse to register
any of the Capital Securities evidenced by this certificate in the name of any
person other than the registered Holder thereof; provided, however, that if box
                                                 --------  -------             
(3), (4) or (5) is checked, the Exchange Agent may require, prior to registering
any such transfer of the Capital Securities such legal opinions, certifications
and other information as the Trust has reasonably requested to confirm that such
transfer is being made pursuant to an exemption from, or in a transaction not
subject to, the registration requirements of the Securities Act of 1933, such as
the exemption provided by Rule 144 under such Act; provided, further, that (i)
                                                   --------  -------          
if box 2 is checked, the transferee must also certify that it is a qualified
institutional buyer as defined in Rule 144A in the form attached hereto or (ii)
if box (4) is checked, the transferee must also provide to the Exchange Agent a
Transferee Letter of Representation in the form attached to the Offering
Memorandum of the Trust dated January 30, 1997; provided, further, that after
the date that a Registration Statement has been filed and so long as such
Registration Statement continues to be effective, the Exchange Agent may only
permit transfers for which box (5) has been checked.


                              ______________________________
                              Signature

                                     A1-6
<PAGE>
 
                 CERTIFICATE OF QUALIFIED INSTITUTIONAL BUYER


     The undersigned transferee of Capital Securities hereby certifies that (i)
the undersigned is a "qualified institutional buyer" (a "QIB") as defined in
Rule 144A ("Rule 144A") promulgated under the Securities Act of 1933, (ii) the
undersigned is aware that the transfer of the Capital Securities to the
undersigned is being made in reliance on Rule 144A (iii) the undersigned is
acquiring the Capital Securities for its own account or for the account of
another QIB over which the undersigned exercises its sole investment discretion.

     The undersigned also understands and acknowledges that the Capital
Securities have not been registered under the Securities Act or any other
applicable securities law, are being offered for resale in transactions not
requiring registration under the Securities Act, and may not be offered, sold,
pledged or otherwise transferred except in compliance with the registration
requirements of the Securities Act or any other applicable securities laws,
pursuant to an exemption therefrom or in a transaction not subject thereto and,
in each case, in compliance with the terms of the Capital Securities and the
terms of the Amended and Restated Declaration of Trust of BFC Capital Trust I,
dated as of February 4, 1997, as the same may be amended from time to time.



                                   ___________________________________
                                   Signature

                                     A1-7
<PAGE>
 
                                  EXHIBIT A-2

                      FORM OF COMMON SECURITY CERTIFICATE

          THIS COMMON SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED (THE "SECURITIES ACT") OR ANY STATE SECURITIES LAWS OR ANY
OTHER APPLICABLE SECURITIES LAW. NEITHER THIS COMMON SECURITY NOR ANY INTEREST
OR PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED,
ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION.

Certificate Number 001                          Number of Common Securities  774

                   Certificate Evidencing Common Securities
                                      of
                              BFC Capital Trust I

                            9.65% Common Securities
                    (aggregate liquidation amount $774,000)

          BFC CAPITAL TRUST I, a statutory business trust formed under the laws
of the State of Delaware (the "Trust"), hereby certifies that BANCFIRST
CORPORATION (the "Holder") is the registered owner of 774 common securities of
the Trust representing undivided beneficial interests in the assets of the Trust
designated the 9.65% Common Securities (liquidation amount $1,000 per Common
Security) (the "Common Securities"). The Common Securities are transferable on
the books and records of the Trust, in person or by a duly authorized attorney,
upon surrender of this certificate duly endorsed and in proper form for
transfer. The designation, rights, privileges, restrictions, preferences and
other terms and provisions of the Common Securities represented hereby are
issued and shall in all respects be subject to the provisions of the Amended and
Restated Declaration of Trust of the Trust dated as of February 4, 1997, as the
same may be amended from time to time (the "Declaration"), including the
designation of the terms of the Common Securities as set forth in Annex I to the
Declaration. Capitalized terms used but not defined herein shall have the
meaning given them in the Declaration. The Sponsor will provide a copy of the
Declaration, the Common Securities Guarantee and the Indenture (including any
supplemental indenture) to a Holder without charge upon written request to the
Sponsor at its principal place of business.

          Upon receipt of this certificate, the Sponsor is bound by the
Declaration and is entitled to the benefits thereunder and to the benefits of
the Common Securities Guarantee to the extent provided therein.

          By its acceptance hereof, the Holder agrees to treat, for United
States federal income tax purposes, the Debentures as indebtedness and the
Common Securities as evidence of indirect beneficial ownership in the
Debentures.

                                     A2-1
<PAGE>
 
          IN WITNESS WHEREOF, the Trust has executed this certificate this 4th
day of February, 1997.

                              BFC CAPITAL TRUST I


                              By: ___________________________
                                    Name:
                                    Administrative Trustee



                         [FORM OF REVERSE OF SECURITY]

          Distributions payable on each Common Security will be fixed at a rate
per annum of 9.65% (the "Coupon Rate") of the liquidation amount of $1,000 per
Common Security, such rate being the rate of interest payable on the Debentures
to be held by the Property Trustee. Distributions in arrears for more than one
semi-annual period will bear interest thereon compounded semiannually at the
Coupon Rate (to the extent permitted by applicable law). Pursuant to the
Registration Rights Agreement, in certain limited circumstances the Debenture
Issuer will be required to pay Liquidated Damages (as defined in the
Registration Rights Agreement) with respect to the Debentures. The term
"Distributions", as used herein, includes such cash distributions and any such
interest and such Liquidated Damages payable unless otherwise stated. A
Distribution is payable only to the extent that payments are made in respect of
the Debentures held by the Property Trustee and to the extent the Property
Trustee has funds available therefor.

          Distributions on the Common Securities will be cumulative, will accrue
from the most recent date to which Distributions have been paid or, if no
Distributions have been paid, from February 4, 1997 and will be payable semi-
annually in arrears, on January 15 and July 15 of each year, commencing on July
15, 1997, except as otherwise described below. Distributions will be computed on
the basis of a 360-day year consisting of twelve 30 day months.  As long as no
Event of Default has occurred and is continuing under the Indenture, the
Debenture Issuer has the right under the Indenture to defer payments of interest
by extending the interest payment period at any time and from time to time on
the Debentures for a period not exceeding 10 consecutive calendar semi-annual
periods, including the first such semi-annual period during such extension
period (each an "Extension Period"), provided that no Extension Period shall
extend beyond the Maturity Date of the Debentures. As a consequence of such
deferral, Distributions will also be deferred. Despite such deferral,
Distributions will continue to accumulate with interest thereon (to the extent
permitted by applicable law, but not at a rate exceeding the rate of interest
then accruing on the Debentures) at the Coupon Rate compounded semi-annually
during any such Extension Period. Prior to the termination of any such Extension
Period, the Debenture Issuer may further defer payments of interest by further
extending such Extension Period; provided that such Extension Period, together
with all such previous and further extensions within such Extension Period, may
not exceed 10 consecutive semi-annual periods, including the first semi-annual
period during such Extension Period, or extend beyond the Maturity Date of the
Debentures. Payments of accrued Distributions will be payable to Holders as they
appear on the books and records of the Trust on the record date immediately
preceding the end of the Extension Period. Upon the termination of any Extension
Period and the payment of all amounts then due, the Debenture Issuer may
commence a new Extension Period, subject to the above requirements.

          Subject to the prior approval of the Federal Reserve Board if such
approval is then required under applicable law or capital guidelines or policies
of the Federal Reserve Board and to certain other conditions set forth in the
Declaration and the Indenture, the Property Trustee may, at the direction of the
Sponsor, at any time terminate the Trust and cause the Debentures to be
distributed to the holders to the Securities in liquidation of the Trust or,
simultaneous with any redemption of the Debentures, cause a Like Amount of the
Securities to be redeemed by the Trust.

                                     A2-2
<PAGE>
 
   The Common Securities shall be redeemable as provided in the Declaration.

                                     A2-3
<PAGE>
 
                                ______________

                                  ASSIGNMENT

FOR VALUE RECEIVED, the undersigned assigns and transfers this Common Security
Certificate to:

________________________________________
________________________________________
________________________________________
(Insert assignee's social security or tax identification number)

________________________________________
________________________________________
________________________________________
(Insert address and zip code of assignee)

and irrevocably appoints ______________________________
_________________________
_________ agent to transfer this Common Security Certificate on the books of the
Trust. The agent may substitute another to act for him or her.

Date: _________________

Signature: __________________
(Sign exactly as your name appears on the other side of this Common Security
Certificate)

Signature Guarantee*: ___________________________


_________________
*    Signature must be guaranteed by an "eligible guarantor institution" that is
     a bank, stockbroker, savings and loan association or credit union meeting
     the requirements of the Registrar, which requirements include membership or
     participation in the Securities Transfer Agents Medallion Program ("STAMP")
     or such other "signature guarantee program" as may be determined by the
     Registrar in addition to, or in substitution for, STAMP, all in accordance
     with the Securities and Exchange Act of 1934. as amended.

                                     A2-4

<PAGE>
 
                                                                     EXHIBIT 4.2

                          __________________________
                          __________________________


                             BANCFIRST CORPORATION


                                   ________


                                   ________

                                   INDENTURE

                         DATED AS OF FEBRUARY 4, 1997

                                   ________

                             THE BANK OF NEW YORK


                                  as Trustee


                                   ________

           9.65% JUNIOR SUBORDINATED DEFERRABLE INTEREST DEBENTURES

                             Due  January 15, 2027


                          __________________________
                          __________________________
<PAGE>
 
                               Table of Contents
                               -----------------

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>  <C>                                                                    <C>
                                  ARTICLE I.
                                DEFINITIONS.................................   1

SECTION 1.1.   Definitions..................................................   1
     Additional Interest....................................................   1
     Adjusted Treasury Rate.................................................   1
     Affiliate..............................................................   1
     Authenticating Agent...................................................   1
     BFC Capital Trust......................................................   1
     Bankruptcy Law.........................................................   2
     Board of Directors.....................................................   2
     Board Resolution.......................................................   2
     Business Day...........................................................   2
     Capital Securities.....................................................   2
     Capital Securities Guarantee...........................................   2
     Commission.............................................................   2
     Common Securities......................................................   2
     Common Securities Guarantee............................................   2
     Common Stock...........................................................   2
     Company................................................................   2
     Company Request........................................................   2
     Comparable Treasury Issue..............................................   2
     Comparable Treasury Price..............................................   3
     Compounded Interest....................................................   3
     Custodian..............................................................   3
     Declaration............................................................   3
     Default................................................................   3
     Deferred Interest......................................................   3
     Definitive Securities..................................................   3
     Depositary.............................................................   3
     Dissolution Event......................................................   3
     Event of Default.......................................................   3
     Exchange Act...........................................................   3
     Exchange Offer.........................................................   3
     Extended Interest Payment Period.......................................   3
     Federal Reserve........................................................   3
     Global Security........................................................   4
     Indebtedness for Money Borrowed........................................   4
     Indenture..............................................................   4
     Interest Payment Date..................................................   4
     Liquidated Damages.....................................................   4
     Make-Whole Amount......................................................   4
     Maturity Date..........................................................   4
     Non Book-Entry Capital Securities......................................   4
     Officers...............................................................   4
     Officers' Certificate..................................................   4
     Opinion of Counsel.....................................................   4
     Optional Redemption Price..............................................   4
     Other Debentures.......................................................   4
</TABLE>

                                       i
<PAGE>
 
                          Table of Contents (cont'd)
                          --------------------------

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>  <C>                                                                    <C>
     Other Guarantees.......................................................   4
     outstanding............................................................   4
     Person.................................................................   5
     Predecessor Security...................................................   5
     Principal office of the Trustee........................................   5
     Purchase Agreement.....................................................   5
     Quotation Agent........................................................   5
     Redemption Price.......................................................   5
     Reference Treasury Dealer Quotations...................................   5
     Registration Rights Agreement..........................................   5
     Regulatory Capital Event...............................................   5
     Responsible Officer....................................................   6
     Restricted Security....................................................   6
     Rule 144A..............................................................   6
     Securities.............................................................   6
     Securities Act.........................................................   6
     Securityholder.........................................................   6
     Security Register......................................................   6
     Senior Indebtedness....................................................   6
     Series A Securities....................................................   6
     Series B Securities....................................................   6
     Special Event..........................................................   6
     Special Event Redemption Price.........................................   6
     Subsidiary.............................................................   6
     Tax Event..............................................................   6
     Trustee................................................................   7
     Trust Indenture Act....................................................   7
     Trust Securities.......................................................   7
     U.S. Government Obligations............................................   7

                                  ARTICLE II.
                                 SECURITIES.................................   7

SECTION 2.1.   Forms Generally..............................................   7
SECTION 2.2.   Execution and Authentication.................................   7
SECTION 2.3.   Form and Payment.............................................   8
SECTION 2.4.   Legends......................................................   8
SECTION 2.5.   Global Security..............................................   8
SECTION 2.6.   Interest.....................................................   9
SECTION 2.7.   Transfer and Exchange........................................  10
SECTION 2.8.   Replacement Securities.......................................  11
SECTION 2.9.   Treasury Securities..........................................  11
SECTION 2.10.  Temporary Securities.........................................  11
SECTION 2.11.  Cancellation.................................................  12
SECTION 2.12.  Defaulted Interest...........................................  12
SECTION 2.13.  CUSIP Numbers................................................  12

                                 ARTICLE III.
</TABLE>

                                       ii
<PAGE>
 
                          Table of Contents (cont'd)
                          --------------------------

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>

                    PARTICULAR COVENANTS OF THE COMPANY.....................  13

SECTION 3.1.   Payment of Principal, Premium and Interest...................  13
SECTION 3.2.   Offices for Notices and Payments, etc........................  13
SECTION 3.3.   Appointments to Fill Vacancies in Trustee's Office...........  13
SECTION 3.4.   Provision as to Paying Agent.................................  13
SECTION 3.5.   Certificate to Trustee.......................................  14
SECTION 3.6.   Compliance with Consolidation Provisions.....................  14
SECTION 3.7.   Limitation on Dividends......................................  14
SECTION 3.8.   Covenants as to BFC Capital Trust............................  15
SECTION 3.9.   Payment of Expenses..........................................  15
SECTION 3.10.  Payment Upon Resignation or Removal..........................  15

                                  ARTICLE IV.
                   SECURITYHOLDERS' LISTS AND REPORTS BY THE
                          COMPANY AND THE TRUSTEE...........................  16

SECTION 4.1.   Securityholders' Lists.......................................  16
SECTION 4.2.   Preservation and Disclosure of Lists.........................  16
SECTION 4.3.   Reports of the Company.......................................  17
SECTION 4.4.   Reports by the Trustee.......................................  17

                                  ARTICLE V.
                  REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                             ON EVENT OF DEFAULT............................  18

SECTION 5.1.   Events of Default............................................  18
SECTION 5.2.   Payment of Securities on Default; Suit Therefor..............  19
SECTION 5.3.   Application of Moneys Collected by Trustee...................  20
SECTION 5.4.   Proceedings by Securityholders...............................  20
SECTION 5.5.   Proceedings by Trustee.......................................  21
SECTION 5.6.   Remedies Cumulative and Continuing...........................  21
SECTION 5.7.   Direction of Proceedings and Waiver of Defaults by
                 Majority of Securityholders................................  21
SECTION 5.8.   Notice of Defaults...........................................  22
SECTION 5.9.   Undertaking to Pay Costs.....................................  22

                                  ARTICLE VI.
                           CONCERNING THE TRUSTEE...........................  22

SECTION 6.1.   Duties and Responsibilities of Trustee.......................  22
SECTION 6.2.   Reliance on Documents, Opinions, etc.........................  23
SECTION 6.3.   No Responsibility for Recitals, etc..........................  24
SECTION 6.4.   Trustee, Authenticating Agent, Paying Agents, Transfer
                 Agents or Registrar May Own Securities.....................  24
SECTION 6.5.   Moneys to be Held in Trust...................................  24
SECTION 6.6.   Compensation and Expenses of Trustee.........................  24
SECTION 6.7.   Officers' Certificate as Evidence............................  25
SECTION 6.8.   Conflicting Interest of Trustee..............................  25
</TABLE>

                                      iii
<PAGE>
 
                          Table of Contents (cont'd)
                          --------------------------

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
SECTION 6.9.   Eligibility of Trustee.......................................  25
SECTION 6.10.  Resignation or Removal of Trustee............................  26
SECTION 6.11.  Acceptance by Successor Trustee..............................  26
SECTION 6.12.  Successor by Merger, etc.....................................  27
SECTION 6.13.  Limitation on Rights of Trustee as a Creditor................  27
SECTION 6.14.  Authenticating Agents........................................  27

                                 ARTICLE VII.
                       CONCERNING THE SECURITYHOLDERS.......................  28

SECTION 7.1.   Action by Securityholders....................................  28
SECTION 7.2.   Proof of Execution by Securityholders........................  29
SECTION 7.3.   Who Are Deemed Absolute Owners...............................  29
SECTION 7.4.   Securities Owned by Company Deemed Not Outstanding...........  29
SECTION 7.5.   Revocation of Consents; Future Holders Bound.................  29

                                 ARTICLE VIII.
                         SECURITYHOLDERS' MEETINGS..........................  30

SECTION 8.1.   Purpose of Meetings..........................................  30
SECTION 8.2.   Call of Meetings by Trustee..................................  30
SECTION 8.3.   Call of Meetings by Company or Securityholders...............  30
SECTION 8.4.   Qualifications for Voting....................................  30
SECTION 8.5.   Regulations..................................................  30
SECTION 8.6.   Voting.......................................................  31

                                  ARTICLE IX.
                                 AMENDMENTS.................................  31

SECTION 9.1.   Without Consent of Securityholders...........................  31
SECTION 9.2.   With Consent of Securityholders..............................  32
SECTION 9.3.   Compliance with Trust Indenture Act; Effect of
                 Supplemental Indentures....................................  33
SECTION 9.4.   Notation on Securities.......................................  33
SECTION 9.5.   Evidence of Compliance of Supplemental Indenture to be
                 Furnished Trustee..........................................  33

                                  ARTICLE X.
             CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE..............  34

SECTION 10.1.  Company May Consolidate, etc., on Certain Terms..............  34
SECTION 10.2.  Opinion of Counsel to be Given Trustee.......................  34
</TABLE>

                                       iv
<PAGE>
 
                          Table of Contents (cont'd)
                          --------------------------

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
                                  ARTICLE XI.
                  SATISFACTION AND DISCHARGE OF INDENTURE...................  35

SECTION 11.1.  Discharge of Indenture.......................................  35
SECTION 11.2.  Deposited Moneys and U.S. Government Obligations to
                 be Held in Trust by Trustee................................  35
SECTION 11.3.  Paying Agent to Repay Moneys Held............................  35
SECTION 11.4.  Return of Unclaimed Moneys...................................  35
SECTION 11.5.  Defeasance Upon Deposit of Moneys or U.S.
                 Obligations Government.....................................  36
SECTION 11.6.  Reinstatement................................................  37

                                  ARTICLE XII
                   IMMUNITY OF INCORPORATORS, STOCKHOLDERS,
                           OFFICERS AND DIRECTORS...........................  37

SECTION 12.1.  Indenture and Securities Solely Corporate Obligations........  37

                                 ARTICLE XIII.
                          MISCELLANEOUS PROVISIONS..........................  37

SECTION 13.1.  Successors...................................................  37
SECTION 13.2.  Official Acts by Successor Corporation.......................  37
SECTION 13.3.  Surrender of Company Powers..................................  37
SECTION 13.4.  Address for Notices, etc.....................................  37
SECTION 13.5.  Governing Law................................................  38
SECTION 13.6.  Evidence of Compliance with Conditions Precedent.............  38
SECTION 13.7.  Business Days................................................  38
SECTION 13.8.  Trust Indenture Act to Control...............................  38
SECTION 13.9.  Table of Contents, Headings, etc.............................  38
SECTION 13.10. Execution in Counterparts....................................  38
SECTION 13.11. Separability.................................................  39
SECTION 13.12. Assignment...................................................  39
SECTION 13.13. Acknowledgment of Rights.....................................  39

                                 ARTICLE XIV.
                 REDEMPTION OF SECURITIES; NO SINKING FUND..................  39

SECTION 14.1.  Special Event Redemption.....................................  39
SECTION 14.2.  Optional Redemption by Company...............................  39
SECTION 14.3.  No Sinking Fund..............................................  40
SECTION 14.4.  Notice of Redemption; Selection of Securities................  40
SECTION 14.5.  Payment of Securities Called for Redemption..................  41
</TABLE>

                                       v
<PAGE>
 
                          Table of Contents (cont'd)
                          --------------------------

<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
                                  ARTICLE XV.
                        SUBORDINATION OF SECURITIES.........................  41

SECTION 15.1.  Agreement to Subordinate.....................................  41
SECTION 15.2.  Default on Senior Indebtedness...............................  42
SECTION 15.3.  Liquidation; Dissolution; Bankruptcy.........................  42
SECTION 15.4.  Subrogation..................................................  43
SECTION 15.5.  Trustee to Effectuate Subordination..........................  44
SECTION 15.6.  Notice by the Company........................................  44
SECTION 15.7.  Rights of the Trustee; Holders of Senior Indebtedness........  44
SECTION 15.8.  Subordination May Not Be Impaired............................  45

                                 ARTICLE XVI.
                    EXTENSION OF INTEREST PAYMENT PERIOD....................  45

SECTION 16.1.  Extension of Interest Payment Period.........................  45
SECTION 16.2.  Notice of Extension..........................................  46
</TABLE>

                                       vi
<PAGE>
 
     THIS INDENTURE, dated as of February 4, 1997, between BancFirst
Corporation, an Oklahoma corporation (hereinafter sometimes called the
"Company"), and The Bank of New York, a New York banking corporation, as trustee
(hereinafter sometimes called the "Trustee").

                              W I T N E S S E T H:

     In consideration of the premises, and the purchase of the Securities by the
holders thereof, the Company covenants and agrees with the Trustee for the equal
and proportionate benefit of the respective holders from time to time of the
Securities, as follows:

                                   ARTICLE I.

                                  DEFINITIONS

      SECTION 1.1.  Definitions.

     The terms defined in this Section 1.1 (except as herein otherwise expressly
provided or unless the context otherwise requires) for all purposes of this
Indenture shall have the respective meanings specified in this Section 1.1.  All
other terms used in this Indenture which are defined in the Trust Indenture Act
of 1939, as amended (the "Trust Indenture Act"), or which are by reference
therein defined in the Securities Act, shall (except as herein otherwise
expressly provided or unless the context otherwise requires) have the meanings
assigned to such terms in said Trust Indenture Act and in said Securities Act as
in force at the date of this Indenture as originally executed.  The following
terms have the meanings given to them in the Declaration: (i) Series A Capital
Securities; (ii) Series B Capital Securities; (iii) Series A Capital Securities
Guarantee; (iv) Series B Capital Securities Guarantee; (v) Clearing Agency; (vi)
Delaware Trustee; (vii) Distributions, (viii) Capital Security Certificate; (ix)
Property Trustee; (x) Administrative Trustees; and (xi) Direct Action.  All
accounting terms used herein and not expressly defined shall have the meanings
assigned to such terms in accordance with generally accepted accounting
principles and the term "generally accepted accounting principles" means such
accounting principles as are generally accepted at the time of any computation.
The words "herein", "hereof" and "hereunder and other words of similar import
refer to this Indenture as a whole and not to any particular Article, Section or
other subdivision.  Headings are used for convenience of reference only and do
not affect interpretation.  The singular includes the plural and vice versa.

     "Additional Interest" shall have the meaning set forth in Section 2.6(c).

     "Adjusted Treasury Rate" shall mean, with respect to any redemption date
pursuant to Section 14.1, the rate per annum equal to the semi-annual equivalent
yield to maturity of the Comparable Treasury Issue, assuming a price for the
Comparable Treasury Issue (expressed as a percentage of its principal amount)
equal to the Comparable Treasury Price for such redemption date, in each case
calculated on the third Business Day preceding the redemption date, plus (i)
2.70% if such redemption date occurs on or prior to December 31, 1997 and (ii)
2.20% in all other cases.

     "Affiliate" shall mean, with respect to a specified Person, (a) any Person
directly or indirectly owning, controlling or holding the power to vote 10% or
more of the outstanding voting securities or other ownership interests of the
specified Person, (b) any Person 10% or more of whose outstanding voting
securities or other ownership interests are directly or indirectly owned,
controlled or held with power to vote by the specified Person, (c) any Person
directly or indirectly controlling, controlled by, or under common control with
the specified Person, (d) a partnership in which the specified Person is a
general partner, (e) any officer or director of the specified Person, and (f) if
the specified Person is an individual, any entity of which the specified Person
is an officer, director or general partner.

     "Authenticating Agent" shall mean any agent or agents of the Trustee which
at the time shall be appointed and acting pursuant to Section 6.14.

     "BFC  Capital Trust" shall mean BFC Capital Trust I, a Delaware business
trust created for the purpose of issuing its undivided beneficial interests in
connection with the issuance of Securities under this Indenture.

                                       1
<PAGE>
 
     "Bankruptcy Law" shall mean Title 11, U.S. Code, or any similar federal or
state law for the relief of debtors.

     "Board of Directors" shall mean either the Board of Directors of the
Company or any duly authorized committee of that board.

     "Board Resolution" shall mean a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Company to have been duly adopted by
the Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee.

     "Business Day" shall mean, with respect to any series of Securities, any
day other than a Saturday or a Sunday or a day on which banking institutions in
The City of New York or Oklahoma City, Oklahoma are authorized or required by
law or executive order to close.

     "Capital Securities" shall mean undivided beneficial interests in the
assets of BFC Capital Trust which rank pari passu with the Common Securities
issued by BFC Capital Trust; provided, however, that if an Event of Default has
                             --------  -------                                 
occurred and is continuing, no payments in respect of Distributions on, or
payments upon liquidation, redemption or otherwise with respect to, the Common
Securities shall be made until the holders of the Capital Securities shall be
paid in full the Distributions and the liquidation, redemption and other
payments to which they are entitled.  References to "Capital Securities" shall
include, collectively, any Series A Capital Securities and Series B Capital
Securities.

     "Capital Securities Guarantee" shall mean any guarantee that the Company
may enter into with The Bank of New York or other Persons that operate directly
or indirectly for the benefit of holders of Capital Securities of BFC Capital
Trust and shall include a Series A Capital Securities Guarantee and a Series B
Capital Securities Guarantee with respect to the Series A Capital Securities and
the Series B Capital Securities, respectively.

     "Commission" shall mean the Securities and Exchange Commission, as from
time to time constituted, created under the Exchange Act, or if at any time
after the execution of this Indenture such Commission is not existing and
performing the duties now assigned to it under the Trust Indenture Act, then the
body performing such duties at such time.

     "Common Securities" shall mean undivided beneficial interests in the assets
of BFC Capital Trust which rank pari passu with Capital Securities issued by BFC
Capital Trust; provided, however, that if an Event of Default has occurred and
               --------  -------
is continuing, no payments in respect of Distributions on, or payments upon
liquidation, redemption or otherwise with respect to, the Common Securities
shall be made until the holders of the Capital Securities shall be paid in full
the Distributions and the liquidation, redemption and other payments to which
they are entitled.

     "Common Securities Guarantee" shall mean any guarantee that the Company
may enter into with any Person or Persons that operate directly or indirectly
for the benefit of holders of Common Securities of BFC Capital Trust.

     "Common Stock" shall mean the Common Stock, par value $1.00 per share, of
the Company or any other class of stock resulting from changes or
reclassifications of such Common Stock consisting solely of changes in par
value, or from par value to no par value, or from no par value to par value.

     "Company" shall mean BancFirst Corporation, an Oklahoma corporation, and,
subject to the provisions of Article X, shall include its successors and
assigns.

     "Company Request" or "Company Order" shall mean a written request or order
signed in the name of the Company by the Chief Executive Officer, the President,
a Vice President, the Controller, the Secretary or an Assistant Secretary of the
Company, and delivered to the Trustee.

     "Comparable Treasury Issue" shall mean the United States Treasury security
selected by the Quotation Agent as having a maturity comparable to the remaining
term of the Securities to be redeemed that would be utilized, at the time 

                                       2
<PAGE>
 
of selection and in accordance with customary financial practice, in pricing new
issues of corporate debt securities of comparable maturity to the remaining term
of the Securities.

     "Comparable Treasury Price" shall mean, with respect to any redemption
date, (A) the yield, under the heading which represents the average for the
immediately prior week, appearing in the most recently published statistical
release designated "H.15(519)" or any successor publication which is published
weekly by the Federal Reserve and which establishes yields on actively traded
United States Treasury securities adjusted to constant maturity under the
caption "Treasury Constant Maturities," for the maturity corresponding to the
Comparable Treasury Issue (if no maturity is within three months before or after
the maturity corresponding to such Comparable Treasury Issue, yields for the two
published maturities most closely corresponding to such Comparable Treasury
Issue shall be interpolated, and the Comparable Treasury Price shall be
interpolated or extrapolated from such yields on a straight-line basis, rounding
to the nearest month), (B) if such release (or successor release) is not
published the week preceding the calculation date or does not contain such
yield, the average of five Reference Treasury Dealer Quotations for such
redemption date, after excluding the highest and lowest such Reference Treasury
Dealer Quotations, or (C) if the Trustee obtains fewer than three such Reference
Treasury Dealer Quotations, the average of all such Quotations.

     "Compounded Interest" shall have the meaning set forth in Section 16.1.

     "Custodian" shall mean any receiver, trustee, assignee, liquidator, or
similar official under any Bankruptcy Law.

     "Declaration" shall mean the Amended and Restated Declaration of Trust of
BFC Capital Trust, dated as of February 4, 1997.

     "Default" shall mean any event, act or condition that with notice or lapse
of time, or both, would constitute an Event of Default.

     "Deferred Interest" shall have the meaning set forth in Section 16.1.

     "Definitive Securities" shall mean those securities issued in fully
registered certificated form not otherwise in global form.

     "Depositary" shall mean, with respect to Securities of any series, for
which the Company shall determine that such Securities will be issued as a
Global Security, The Depository Trust Company, New York, New York, another
clearing agency, or any successor registered as a clearing agency under the
Exchange Act or other applicable statute or regulation, which, in each case,
shall be designated by the Company pursuant to Section 2.5(d).

     "Dissolution Event" shall mean the termination of BFC Capital Trust
pursuant to the Declaration, and the distribution of the Securities held by the
Property Trustee to the holders of the Trust Securities issued by BFC Capital
Trust pro rata in accordance with the Declaration.

     "Event of Default" shall mean any event specified in Section 5.1,
continued for the period of time, if any, and after the giving of the notice, if
any, therein designated.

     "Exchange Act" shall mean the Securities Exchange Act of 1934, as amended.

     "Exchange Offer" shall mean the offer that may be made pursuant to the
Registration Rights Agreement (i) by the Company to exchange the Series B
Securities for the Series A Securities and to exchange a Series B Capital
Securities Guarantee for a Series A Capital Securities Guarantee and (ii) by BFC
Capital Trust to exchange the Series B Capital Securities for the Series A
Capital Securities.

     "Extended Interest Payment Period" shall have the meaning set forth in
Section 16.1.

     "Federal Reserve" shall mean the Board of Governors of the Federal Reserve
System.

                                       3
<PAGE>
 
     "Global Security" shall mean, with respect to the Securities, a Security
executed by the Company and delivered by the Trustee to the Depositary or
pursuant to the Depositary's instruction, all in accordance with the Indenture,
which shall be registered in the name of the Depositary or its nominee.

     "Indebtedness for Money Borrowed" shall mean any obligation of, or any
obligation guaranteed by, the Company for the repayment of borrowed money,
whether or not evidenced by bonds, debentures, notes or other written
instruments.

     "Indenture" shall mean this instrument as originally executed or, if
amended as herein provided, as so amended.

     "Interest Payment Date" shall have the meaning set forth in Section 2.6.

     "Liquidated Damages" shall have the meaning set forth in the Registration
Rights Agreement.

     "Make-Whole Amount" shall mean, in respect of a Security, the greater of
(x) 100% of the principal amount to be redeemed or (y) the sum, as determined by
a Quotation Agent, of the present values of the remaining scheduled payments of
principal and interest thereon discounted to the redemption date on a semi-
annual basis (assuming a 360-day year consisting of twelve 30-day months) at the
Adjusted Treasury Rate, plus, in either case, any accrued and unpaid interest
thereon, including Compounded Interest and Additional Interest, if any, to the
date of such redemption.

     "Maturity Date" shall mean January 15, 2027.

     "Non Book-Entry Capital Securities" shall have the meaning set forth in
Section 2.5.

     "Officers" shall mean any of the Chief Executive Officer, the President, a
Vice President or the Controller, the Secretary or an Assistant Secretary of the
Company.

     "Officers' Certificate" shall mean a certificate signed by two Officers
and delivered to the Trustee.

     "Opinion of Counsel" shall mean a written opinion of counsel, who may be
an employee of the Company, and who shall be acceptable to the Trustee.

     "Optional Redemption Price" shall have the meaning set forth in Section
14.2.

     "Other Debentures" shall mean all junior subordinated debentures other
than the Securities issued by the Company from time to time and sold to trusts
(other than BFC Capital Trust) to be established by the Company (if any), in
each case similar to BFC Capital Trust.

     "Other Guarantees" shall mean all guarantees to be issued by the Company
with respect to capital securities (if any) and issued to other trusts other
than BFC Capital Trust to be established by the Company (if any), in each case
similar to BFC Capital Trust.

     The term "outstanding" when used with reference to Securities, shall,
subject to the provisions of Section 7.4, mean, as of any particular time, all
Securities authenticated and delivered by the Trustee or the Authenticating
Agent under this Indenture, except

     (a)  Securities theretofore canceled by the Trustee or the Authenticating
          Agent or delivered to the Trustee for cancellation;

     (b)  Securities, or portions thereof, for the payment or redemption of
          which moneys in the necessary amount shall have been deposited in
          trust with the Trustee or with any paying agent (other than the
          Company) or shall have been set aside and segregated in trust by the
          Company (if the Company shall act as its own paying agent); provided
          that, if such Securities, or portions thereof, are to be redeemed

                                       4
<PAGE>
 
          prior to maturity thereof, notice of such redemption shall have been
          given as in Article XIV provided or provision satisfactory to the
          Trustee shall have been made for giving such notice; and

     (c)  Securities in lieu of or in substitution for which other Securities
          shall have been authenticated and delivered pursuant to the terms of
          Section 2.8 unless proof satisfactory to the Company and the Trustee
          is presented that any such Securities are held by bona fide holders in
          due course.

     "Person" shall mean any individual, corporation, estate, partnership,
joint venture, association, joint-stock company, limited liability company,
trust, unincorporated organization or government or any agency or political
subdivision thereof.

     "Predecessor Security" of any particular Security shall mean every
previous Security evidencing all or a portion of the same debt as that evidenced
by such particular Security; and, for the purposes of this definition, any
Security authenticated and delivered under Section 2.8 in lieu of a lost,
destroyed or stolen Security shall be deemed to evidence the same debt as the
lost, destroyed or stolen Security.

     "Principal office of the Trustee", or other similar term, shall mean the
principal office of the Trustee, at which at any particular time its corporate
trust business shall be administered.

     "Purchase Agreement" shall mean the Purchase Agreement dated January 30,
1997, among the Company, BFC Capital Trust and the Initial Purchasers named
therein.

     "Quotation Agent" shall mean the Reference Treasury Dealer appointed by
the Company.

     "Redemption Price" shall mean the Special Event Redemption Price or the
Optional Redemption Price, as the context requires.

     "Reference Treasury Dealer" shall mean (i) Bear, Stearns & Co. Inc. and its
successors; provided, however, that if the foregoing shall cease to be a primary
            --------  -------                                                   
U.S.  Government securities dealer in New York City (a "Primary Treasury
Dealer"), the Company shall substitute therefor another Primary Treasury Dealer,
and (ii) any other Primary Treasury Dealer selected by the Company.

     "Reference Treasury Dealer Quotations" shall mean, with respect to each
Reference Treasury Dealer and any redemption date pursuant to Section 14.1, the
average, as determined by the Trustee, of the bid and asked prices for the
Comparable Treasury Issue (expressed in each case as a percentage of its
principal amount) quoted in writing to the Trustee by such Reference Treasury
Dealer at 5:00 p.m., New York City time, on the third Business Day preceding
such redemption date.

     "Registration Rights Agreement" shall mean the Registration Rights
Agreement, dated as of February 4, 1997, by and among the Company, BFC Capital
Trust and the Initial Purchasers named therein, as such agreement may be
amended, modified or supplemented from time to time.

     "Regulatory Capital Event" shall mean that the Company shall have received
an opinion of independent bank regulatory counsel experienced in such matters to
the effect that, as a result of (a) any amendment to, or change (including any
announced prospective change) in, the laws (or any regulations thereunder) of
the United States or any rules, guidelines or policies of the Federal Reserve or
(b) any official administrative pronouncement or judicial decision interpreting
or applying such laws or regulations, which amendment or change is effective or
such pronouncement or decision is announced on or after February 4, 1997, the
Capital Securities do not constitute, or within 90 days of the date of such
opinion, will not constitute, Tier I Capital (or its then equivalent); provided,
                                                                       -------- 
however, that the distribution of the Capital Securities in connection with the
- -------                                                                        
termination of BFC Capital Trust by the Company, as sponsor, shall not in and of
itself constitute a Regulatory Capital Event unless such termination shall have
occurred in connection with a Tax Event.

                                       5
<PAGE>
 
     "Responsible Officer", when used with respect to the Trustee, shall mean
any officer of the Trustee with direct responsibility for the administration of
this Indenture and also means, with respect to a particular corporate trust
matter, any other officer to whom such matter is referred because of his
knowledge of and familiarity with the particular subject.

     "Restricted Security" shall mean Securities that bear or are required to
bear the legends set forth in Exhibit A hereto, other than those legends to be
set forth on a Global Security.

     "Rule 144A" shall mean Rule 144A under the Securities Act, as such Rule
may be amended from time to time, or under any similar rule or regulation
hereafter adopted by the Commission.

     "Securities" shall mean, collectively, the Series A Securities and the
Series B Securities.

     "Securities Act" shall mean the Securities Act of 1933 as amended.

     "Securityholder", "holder of Securities" or other similar terms, shall
mean any Person in whose name at the time a particular Security is registered on
the register kept by the Company or the Trustee for that purpose in accordance
with the terms hereof .

     "Security Register" shall mean (i) prior to a Dissolution Event, the list
of holders provided to the Trustee pursuant to Section 4.1, and (ii) following a
Dissolution Event, any security register maintained by a security registrar for
the Securities appointed by the Company following the execution of a
supplemental indenture providing for transfer procedures as provided for in
Section 2.7(a).

     "Senior Indebtedness" shall mean all Indebtedness for Money Borrowed,
whether outstanding on the date of execution of this Indenture or hereafter
created, assumed or incurred, unless the terms thereof specifically provide that
it is not superior in right of payment to the Securities, and any deferrals,
renewals or extensions of such Senior Indebtedness.

     "Series A Securities" shall mean the Company's 9.65% Series A Junior
Subordinated Deferrable Interest Debentures due January 15, 2027, as
authenticated and issued under this Indenture.

     "Series B Securities" shall mean the Company's 9.65% Series B Junior
Subordinated Deferrable Interest Debentures due January 15, 2027, as
authenticated and issued under this Indenture.

     "Special Event" shall mean either a Regulatory Capital Event or a Tax
Event.

     "Special Event Redemption Price" shall mean, with respect to any
redemption of the Securities pursuant to Section 14.1 hereof, an amount in cash
equal to the Make-Whole Amount for each $1,000 principal amount of Securities.

     "Subsidiary" shall mean with respect to any Person, (i) any corporation at
least a majority of whose outstanding voting stock of which is owned, directly
or indirectly, by such Person or by one or more of its Subsidiaries, or by such
Person and one or more of its Subsidiaries, (ii) any general partnership, joint
venture or similar entity, at least a majority of whose outstanding partnership
or similar interests shall at the time be owned by such Person, or by one or
more of its Subsidiaries, or by such Person and one or more of its Subsidiaries
and (iii) any limited partnership of which such Person or any of its
Subsidiaries is a general partner.  For the purposes of this definition, "voting
stock" means shares, interests, participations or other equivalents in the
equity interest (however designated) in such Person having ordinary voting power
for the election of a majority of the directors (or the equivalent) of such
Person, other than shares, interests, participations or other equivalents having
such power only by reason of the occurrence of a contingency.

     "Tax Event" shall mean the receipt by BFC Capital Trust and the Company of
an opinion of counsel experienced in such matters to the effect that, as a
result of any amendment to, or change (including any announced prospective
change) in, the laws or any regulations thereunder of the United States or any
political subdivision or taxing authority thereof or therein or as a result of
any official administrative pronouncement or judicial decision interpreting 

                                       6
<PAGE>
 
or applying such laws or regulations, which amendment or change is effective or
which pronouncement or decision is announced on or after February 4, 1997, there
is more than an insubstantial risk that (i) BFC Capital Trust is, or will be
within 90 days of the date of such opinion, subject to United States Federal
income tax with respect to income received or accrued on the Securities, (ii)
interest payable by the Company on the Securities is not, or within 90 days of
the date of such opinion, will not be, deductible by the Company, in whole or in
part, for United States Federal income tax purposes, or (iii) BFC Capital Trust
is, or will be within 90 days of the date of such opinion, subject to more than
a de minimis amount of other taxes, duties or other governmental charges.

     "Trustee" shall mean the Person identified as "Trustee" in the first
paragraph hereof, and, subject to the provisions of Article VI hereof, shall
also include its successors and assigns as Trustee hereunder.

     "Trust Indenture Act" shall mean the Trust Indenture Act of 1939 as in
force at the date of execution of this Indenture except as provided in Section
9.3.

     "Trust Securities" shall mean the Capital Securities and the Common
Securities, collectively.

     "U.S. Government Obligations" shall mean securities that are (i) direct
obligations of the United States of America for the payment of which its full
faith and credit is pledged or (ii) obligations of a Person controlled or
supervised by and acting as an agency or instrumentality of the United States of
America the payment of which is unconditionally guaranteed as a full faith and
credit obligation by the United States of America, which, in either case under
clauses (i) or (ii) are not callable or redeemable at the option of the issuer
thereof, and shall also include a depository receipt issued by a bank or trust
company as custodian with respect to any such U.S. Government Obligation or a
specific payment of interest on or principal of any such U.S. Government
Obligation held by such custodian for the account of the holder of a depository
receipt, provided that (except as required by law) such custodian is not
authorized to make any deduction from the amount payable to the holder of such
depository receipt from any amount received by the custodian in respect of the
U.S. Government Obligation or the specific payment of interest on or principal
of the U.S. Government Obligation evidenced by such depository receipt.

                                  ARTICLE II.

                                  SECURITIES

     SECTION 2.1.  Forms Generally.

     The Securities and the Trustee's certificate of authentication shall be
substantially in the form of Exhibit A, the terms of which are incorporated in
and made a part of this Indenture.  The Securities may have notations, legends
or endorsements required by law, stock exchange rule, agreements to which the
Company is subject or usage.  Each Security shall be dated the date of its
authentication.  The Securities shall be issued in denominations of $1,000 and
integral multiples thereof.

     SECTION 2.2.  Execution and Authentication.

     An Officer shall sign the Securities for the Company by manual or facsimile
signature.  If an Officer whose signature is on a Security no longer holds that
office at the time the Security is authenticated, the Security shall
nevertheless be valid.

     A Security shall not be valid until authenticated by the manual or
facsimile signature of the Trustee. The signature of the Trustee shall be
conclusive evidence that the Security has been authenticated under this
Indenture.  The form of Trustee's certificate of authentication to be borne by
the Securities shall be substantially as set forth in Exhibit A hereto.

     The Trustee shall, upon a Company Order, authenticate for original issue up
to, and the aggregate principal amount of Securities outstanding at any time may
not exceed $25,774,000 aggregate principal amount of the Securities 

                                       7
<PAGE>
 
in accordance with the terms and provisions of the Debenture Subscription
Agreement dated as of February 4, 1997, between the Company and BFC Capital
Trust, except as provided in Sections 2.7, 2.8, 2.10 and 14.5.

     SECTION 2.3.  Form and Payment.

     Except as provided in Section 2.5, the Securities shall be issued in fully
registered certificated form without interest coupons, and principal of and
premium, if any, and interest on the Securities issued in certificated form will
be payable, the transfer of such Securities will be registrable and such
Securities will be exchangeable for Securities bearing identical terms and
provisions at the office or agency of the Trustee; provided, however, that
                                                   --------  -------      
payment of interest may be made at the option of the Company (i) by check mailed
to the holder at such address as shall appear in the Security Register or (ii)
by transfer to an account maintained by the Person entitled thereto, provided
that proper transfer instructions have been received in writing by the relevant
record date. Notwithstanding the foregoing, so long as the holder of any
Securities is the Property Trustee, the payment of the principal of and premium,
if any, and interest (including Compounded Interest and Additional Interest, if
any) on such Securities held by the Property Trustee will be made in immediately
available funds at such place and to such account as may be designated by the
Property Trustee.

     SECTION 2.4.  Legends.

     (a)  Except as permitted by subsection (b) of this Section 2.4 or as
otherwise determined by the Company in accordance with applicable law, each
Security shall bear the applicable legends relating to restrictions on transfer
pursuant to the securities laws in substantially the form set forth on Exhibit A
hereto.

     (b)  The Company shall issue and the Trustee shall authenticate Series B
Securities in exchange for Series A Securities accepted for exchange in the
Exchange Offer, which Series B Securities shall not bear the legends required by
subsection (a) above, in each case unless the holder of such Series A Securities
is either (i) a broker-dealer who purchased such Series A Securities directly
from the Company for resale pursuant to Rule 144A or any other available
exemption under the Securities Act, (ii) a Person participating in the
distribution of the Series A Securities or (iii) a Person who is an affiliate
(as defined in Rule 144 under the Securities Act) of the Company.

     SECTION 2.5.  Global Security.

     (a)  In connection with a Dissolution Event,

     (i)  if any Capital Securities are held in book-entry form, the related
     Definitive Securities shall be presented to the Trustee (if an arrangement
     with the Depositary has been maintained) by the Property Trustee in
     exchange for one or more Global Securities (as may be required pursuant to
     Section 2.7) in an aggregate principal amount equal to the aggregate
     principal amount of all outstanding Securities, to be registered in the
     name of the Depositary, or its nominee, and delivered by the Trustee to the
     Depositary, or a custodian therefor, for crediting to the accounts of its
     participants pursuant to the instructions of the Administrative Trustees;
     the Company upon any such presentation shall execute one or more Global
     Securities in such aggregate principal amount and deliver the same to the
     Trustee for authentication and delivery in accordance with the Indenture;
     and payments on the Securities issued as a Global Security will be made to
     the Depositary; and

     (ii) if any Capital Securities are held in certificated form, the related
     Definitive Securities may be presented to the Trustee by the Property
     Trustee and any Capital Security certificate which represents Capital
     Securities other than Capital Securities in book-entry form ("Non Book-
     Entry Capital Securities") will be deemed to represent beneficial interests
     in Securities presented to the Trustee by the Property Trustee having an
     aggregate principal amount equal to the aggregate liquidation amount of the
     Non Book-Entry Capital Securities until such Capital Security certificates
     are presented to the Security Registrar for transfer or reissuance, at
     which time such Capital Security certificates will be canceled and a
     Security, registered in the name of the holder of the Capital Security
     certificate, as the case may be, with an aggregate principal amount equal
     to the aggregate liquidation amount of the Capital Security certificate
     canceled, will be executed by the Company and delivered to the Trustee for
     authentication and delivery in accordance with the Indenture; and 

                                       8
<PAGE>
 
     upon the issuance of such Securities, Securities with an equivalent
     aggregate principal amount that were presented by the Property Trustee to
     the Trustee will be deemed to have been canceled.

     (b)  The Global Securities shall represent the aggregate amount of
outstanding Securities from time to time endorsed thereon; provided, that the
                                                           --------          
aggregate amount of outstanding Securities represented thereby may from time to
time be reduced or increased, as appropriate, to reflect exchanges and
redemptions. Any endorsement of a Global Security to reflect the amount of any
increase or decrease in the amount of outstanding Securities represented thereby
shall be made by the Trustee, in accordance with instructions given by the
Company as required by this Section 2.5.

     (c)  The Global Securities may be transferred, in whole but not in part,
only to another nominee of the Depositary, or to a successor Depositary selected
or approved by the Company or to a nominee of such successor Depositary.

     (d)  If at any time the Depositary notifies the Company that it is
unwilling or unable to continue as Depositary or the Depositary has ceased to be
a clearing agency registered under the Exchange Act, and a successor Depositary
is not appointed by the Company within 90 days after the Company receives such
notice or becomes aware of such condition, as the case may be, the Company will
execute, and the Trustee, upon written notice from the Company, will
authenticate and make available for delivery the Definitive Securities, in
authorized denominations, and in an aggregate principal amount equal to the
principal amount of the Global Security in exchange for such Global Security. If
there is an Event of Default, the Depositary shall have the right to exchange
the Global Securities for Definitive Securities. In addition, the Company may at
any time determine that the Securities shall no longer be represented by a
Global Security. In the event of such an Event of Default or such a
determination, the Company shall execute, and subject to Section 2.7, the
Trustee, upon receipt of an Officers' Certificate evidencing such determination
by the Company, will authenticate and make available for delivery the Definitive
Securities, in authorized denominations, and in an aggregate principal amount
equal to the principal amount of the Global Security in exchange for such Global
Security. Upon the exchange of the Global Security for such Definitive
Securities, in authorized denominations, the Global Security shall be canceled
by the Trustee. Such Definitive Securities issued in exchange for the Global
Security shall be registered in such names and in such authorized denominations
as the Depositary, pursuant to instructions from its direct or indirect
participants or otherwise, shall instruct the Trustee. The Trustee shall deliver
such Definitive Securities to the Depositary for delivery to the Persons in
whose names such Definitive Securities are so registered.

      SECTION 2.6.  Interest.

     (a)  Each Security will bear interest at the rate of 6.95% per annum (the
"Coupon Rate") from the most recent date to which interest has been paid or, if
no interest has been paid, from February 4, 1997, until the principal thereof
becomes due and payable, and on any overdue principal and (to the extent that
payment of such interest is enforceable under applicable law) on any overdue
installment of interest at the Coupon Rate, compounded semi-annually, payable
(subject to the provisions of Article XVI) semi-annually in arrears on January
15 and July 15 of each year, commencing on July 15, 1997 (each, an "Interest
Payment Date"), to the Person in whose name such Security or any predecessor
Security is registered, at the close of business on the regular record date for
such interest installment, which shall be the first day of the month in which
the relevant Interest Payment Date falls.

     (b)  Interest will be computed on the basis of a 360-day year consisting of
twelve 30-day months.

     (c)  During such time as the Property Trustee is the holder of any
Securities, the Company shall pay any additional amounts on the Securities as
may be necessary in order that the amount of Distributions then due and payable
by BFC Capital Trust on the outstanding Securities shall not be reduced as a
result of any additional taxes, duties or other governmental charges to which
BFC Capital Trust has become subject as a result of a Tax Event ("Additional
Interest").

                                       9
<PAGE>
 
     SECTION 2.7.  Transfer and Exchange.

     (a)  Transfer Restrictions.  The Series A Securities, and those Series B
          ---------------------                                              
Securities with respect to which any Person described in Section 2.4(b)(i), (ii)
or (iii) is the beneficial owner, may not be transferred except in compliance
with the legend contained in Exhibit A unless otherwise determined by the
Company in accordance with applicable law.  Upon any distribution of the
Securities following a Dissolution Event, the Company and the Trustee shall
enter into a supplemental indenture pursuant to Section 9.1 to provide for the
transfer restrictions and procedures with respect to the Securities
substantially similar to those contained in the Declaration to the extent
applicable in the circumstances existing at such time.  In addition, the Series
A Securities will be issued and may be transferred only in blocks having an
aggregate principal amount of not less than $100,000 until such Series A
Securities are registered pursuant to an effective registration statement filed
under the Securities Act or are "unrestricted" pursuant to Rule 144 under the
Securities Act. Any such transfer of the Series A Securities in a block having
an aggregate principal amount of less than $100,000 shall be deemed to be void
and of no legal force or effect whatsoever.  Any such transferee shall be deemed
not to be a holder of such Series A Securities for any purpose, including, but
not limited to, the receipt of payments on such Series A Securities, and such
transferee shall be deemed to have no interest whatsoever in such Series A
Securities.

     (b)  General Provisions Relating to Transfers and Exchanges.  To permit
          ------------------------------------------------------            
registrations of transfers and exchanges, the Company shall execute and the
Trustee shall authenticate Definitive Securities and Global Securities.  All
Definitive Securities and Global Securities issued upon any registration of
transfer or exchange of Definitive Securities or Global Securities shall be the
valid obligations of the Company, evidencing the same debt, and entitled to the
same benefits under this Indenture, as the Definitive Securities or Global
Securities surrendered upon such registration of transfer or exchange.

     No service charge shall be made to a holder for any registration of
transfer or exchange, but the Company may require payment of a sum sufficient to
cover any transfer tax or similar governmental charge payable in connection
therewith.

     The Company shall not be required to (i) issue, register the transfer of or
exchange Securities during a period beginning at the opening of business 15 days
before the day of mailing of a notice of redemption or any notice of selection
of Securities for redemption under Article XIV hereof and ending at the close of
business on the day of such mailing; or (ii) register the transfer of or
exchange any Security so selected for redemption in whole or in part, except the
unredeemed portion of any Security being redeemed in part.

     Prior to due presentment for the registration of a transfer of any
Security, the Trustee, any Agent and the Company may deem and treat the Person
in whose name any Security is registered as the absolute owner of such Security
for the purpose of receiving payment of principal of and premium, if any, and
interest on such Securities, and none of the Trustee, any Agent nor the Company
shall be affected by notice to the contrary.

     (c)  Exchange of Series A Securities for Series B Securities.  The Series A
          -------------------------------------------------------               
Securities may be exchanged for Series B Securities pursuant to the terms of the
Exchange Offer.  The Trustee shall make the exchange as follows:

     The Company shall present the Trustee with an Officers' Certificate
certifying the following:

     (i)  upon issuance of the Series B Securities, the transactions
     contemplated by the Exchange Offer have been consummated; and

     (ii) the principal amount of Series A Securities properly tendered in the
     Exchange Offer that are represented by a Global Security and the principal
     amount of Series A Securities properly tendered in the Exchange Offer that
     are represented by Definitive Securities, the name of each holder of such
     Definitive Securities, the principal amount at maturity properly tendered
     in the Exchange Offer by each such holder and the name and address to which
     Definitive Securities for Series B Securities shall be registered and sent
     for each such holder.

                                       10
<PAGE>
 
     The Trustee, upon receipt of (A) such Officers' Certificate, (B) an Opinion
of Counsel (1) to the effect that the Series B Securities have been registered
under Section 5 of the Securities Act and the Indenture has been qualified under
the Trust Indenture Act and (2) with respect to the matters set forth in Section
3(p) of the Registration Rights Agreement and (C) a Company Order, shall
authenticate (1) a Global Security for Series B Securities in an aggregate
principal amount equal to the aggregate principal amount of Series A Securities
represented by a Global Security indicated in such Officers' Certificate as
having been properly tendered and (2) Definitive Securities representing Series
B Securities registered in the names of, and in the principal amounts indicated
in, such Officers' Certificate.

     If the principal amount at maturity of the Global Security for the Series B
Securities is less than the principal amount at maturity of the Global Security
for the Series A Securities, the Trustee shall make an endorsement on such
Global Security for Series A Securities indicating a reduction in the principal
amount at maturity represented thereby.

     The Trustee shall deliver such Definitive Securities for Series B
Securities to the holders thereof as indicated in such Officers' Certificate.

     SECTION 2.8.  Replacement Securities.

     If any mutilated Security is surrendered to the Trustee, or the Company and
the Trustee receive evidence to their satisfaction of the destruction, loss or
theft of any Security, the Company shall issue and the Trustee shall
authenticate a replacement Security if the Trustee's requirements for
replacements of Securities are met.  An indemnity bond must be supplied by the
holder that is sufficient in the judgment of the Trustee and the Company to
protect the Company, the Trustee, any Agent or any authenticating agent from any
loss that any of them may suffer if a Security is replaced.  The Company or the
Trustee may charge for its expenses in replacing a Security.

     Every replacement Security is an obligation of the Company and shall be
entitled to all of the benefits of this Indenture equally and proportionately
with all other Securities duly issued hereunder.

     SECTION 2.9.  Treasury Securities.

     In determining whether the holders of the required principal amount of
Securities have concurred in any direction, waiver or consent, Securities owned
by the Company or any Affiliate of the Company shall be considered as though not
outstanding, except that for purposes of determining whether the Trustee shall
be protected in relying on any such direction, waiver or consent, only
Securities that a Trustee actually knows to be so owned shall be so considered.

     SECTION 2.10.  Temporary Securities.

     Pending the preparation of Definitive Securities, the Company may execute,
and upon Company Order the Trustee shall authenticate and make available for
delivery, temporary Securities that are printed, lithographed, typewritten,
mimeographed or otherwise reproduced, in any authorized denomination,
substantially of the tenor of the definitive Securities in lieu of which they
are issued and with such appropriate insertions, omissions, substitutions and
other variations as the officers executing such Securities may determine, as
conclusively evidenced by their execution of such Securities.

     If temporary Securities are issued, the Company shall cause Definitive
Securities to be prepared without unreasonable delay.  The Definitive Securities
shall be printed, lithographed or engraved, or provided by any combination
thereof, or in any other manner permitted by the rules and regulations of any
applicable securities exchange, all as determined by the officers executing such
Definitive Securities.  After the preparation of Definitive Securities, the
temporary Securities shall be exchangeable for Definitive Securities upon
surrender of the temporary Securities at the office or agency maintained by the
Company for such purpose pursuant to Section 3.2 hereof, without charge to the
holder.  Upon surrender for cancellation of any one or more temporary
Securities, the Company shall execute, and the Trustee shall authenticate and
make available for delivery, in exchange therefor the same aggregate principal
amount of Definitive Securities of authorized denominations.  Until so
exchanged, the temporary Securities shall in all respects be entitled to the
same benefits under this Indenture as Definitive Securities.

                                       11
<PAGE>
 
     SECTION 2.11.  Cancellation.

     The Company at any time may deliver Securities to the Trustee for
cancellation.  The Trustee and no one else shall cancel all Securities
surrendered for registration of transfer, exchange, payment, replacement or
cancellation and shall return canceled Securities to the Company.  The Company
may not issue new Securities to replace Securities that have been redeemed or
paid or that have been delivered to the Trustee for cancellation.

     SECTION 2.12.  Defaulted Interest.

     Any interest on any Security that is payable, but is not punctually paid or
duly provided for, on any Interest Payment Date (herein called "Defaulted
Interest") shall forthwith cease to be payable to the holder on the relevant
regular record date by virtue of having been such holder; and such Defaulted
Interest shall be paid by the Company, at its election, as provided in clause
(a) or clause (b) below:

     (a)  The Company may make payment of any Defaulted Interest on Securities
to the Persons in whose names such Securities (or their respective Predecessor
Securities) are registered at the close of business on a special record date for
the payment of such Defaulted Interest, which shall be fixed in the following
manner: the Company shall notify the Trustee in writing of the amount of
Defaulted Interest proposed to be paid on each such Security and the date of the
proposed payment, and at the same time the Company shall deposit with the
Trustee an amount of money equal to the aggregate amount proposed to be paid in
respect of such Defaulted Interest or shall make arrangements satisfactory to
the Trustee for such deposit prior to the date of the proposed payment, such
money when deposited to be held in trust for the benefit of the Persons entitled
to such Defaulted Interest as in this clause provided. Thereupon the Trustee
shall fix a special record date for the payment of such Defaulted Interest which
shall not be more than 15 nor less than 10 days prior to the date of the
proposed payment and not less than 10 days after the receipt by the Trustee of
the notice of the proposed payment. The Trustee shall promptly notify the
Company of such special record date and, in the name and at the expense of the
Company, shall cause notice of the proposed payment of such Defaulted Interest
and the special record date therefor to be mailed, first class postage prepaid,
to each Securityholder at his or her address as it appears in the Security
Register, not less than 10 days prior to such special record date. Notice of the
proposed payment of such Defaulted Interest and the special record date therefor
having been mailed as aforesaid, such Defaulted Interest shall be paid to the
Persons in whose names such Securities (or their respective Predecessor
Securities) are registered on such special record date and shall be no longer
payable pursuant to the following clause (b).

     (b)  The Company may make payment of any Defaulted Interest on any
Securities in any other lawful manner not inconsistent with the requirements of
any securities exchange on which such Securities may be listed, and upon such
notice as may be required by such exchange, if, after notice given by the
Company to the Trustee of the proposed payment pursuant to this clause, such
manner of payment shall be deemed practicable by the Trustee.

     SECTION 2.13.  CUSIP Numbers.

     The Company in issuing the Securities may use "CUSIP" numbers (if then
generally in use), and, if so, the Trustee shall use "CUSIP" numbers in notices
of redemption as a convenience to Securityholders; provided that any such notice
                                                   --------                     
may state that no representation is made as to the correctness of such numbers
either as printed on the Securities or as contained in any notice of a
redemption and that reliance may be placed only on the other identification
numbers printed on the Securities, and any such redemption shall not be affected
by any defect in or omission of such numbers.  The Company will promptly notify
the Trustee of any change in the CUSIP numbers.

                                       12
<PAGE>
 
                                  ARTICLE III

                      PARTICULAR COVENANTS OF THE COMPANY

 
     SECTION 3.1.  Payment of Principal, Premium and Interest

     The Company covenants and agrees for the benefit of the holders of the
Securities that it will duly and punctually pay or cause to be paid the
principal of and premium, if any, and interest on the Securities at the place,
at the respective times and in the manner provided herein.  The Company further
covenants to pay any and all amounts including, without limitation, Liquidated
Damages, if any, on the dates and in the manner required under the Registration
Rights Agreement.

     SECTION 3.2.  Offices for Notices and Payments, etc.

     So long as any of the Securities remains outstanding, the Company will
maintain in the Borough of Manhattan, The City of New York, an office or agency
where the Securities may be presented for payment, an office or agency where the
Securities may be presented for registration of transfer and for exchange as in
this Indenture provided and an office or agency where notices and demands to or
upon the Company in respect of the Securities or of this Indenture may be
served.  The Company will give to the Trustee written notice of the location of
any such office or agency and of any change of location thereof.  Until
otherwise designated from time to time by the Company in a notice to the
Trustee, any such office or agency for all of the above purposes shall be the
office or agency of the Trustee. In case the Company shall fail to maintain any
such office or agency in the Borough of Manhattan, The City of New York, or
shall fail to give such notice of the location or of any change in the location
thereof, presentations and demands may be made and notices may be served at the
principal corporate trust office of the Trustee.

     In addition to any such office or agency, the Company may from time to time
designate one or more offices or agencies outside the Borough of Manhattan, The
City of New York, where the Securities may be presented for registration of
transfer and for exchange in the manner provided in this Indenture, and the
Company may from time to time rescind such designation, as the Company may deem
desirable or expedient; provided, however, that no such designation or
                        -------- --------                             
rescission shall in any manner relieve the Company of its obligation to maintain
any such office or agency in the Borough of Manhattan, The City of New York, for
the purposes above mentioned.  The Company will give to the Trustee prompt
written notice of any such designation or rescission thereof.

     SECTION 3.3.  Appointments to Fill Vacancies in Trustee's Office.

     The Company, whenever necessary to avoid or fill a vacancy in the office of
Trustee, will appoint, in the manner provided in Section 6.10, a Trustee, so
that there shall at all times be a Trustee hereunder.

     SECTION 3.4.  Provision as to Paying Agent.

     (a)  If the Company shall appoint a paying agent other than the Trustee
with respect to the Securities, it will cause such paying agent to execute and
deliver to the Trustee an instrument in which such agent shall agree with the
Trustee, subject to the provisions of this Section 3.4,

     (i)  that it will hold all sums held by it as such agent for the payment of
     the principal of and premium, if any, or interest on the Securities
     (whether such sums have been paid to it by the Company or by any other
     obligor on the Securities) in trust for the benefit of the holders of the
     Securities; and

     (ii) that it will give the Trustee notice of any failure by the Company (or
     by any other obligor on the Securities) to make any payment of the
     principal of and premium or interest on the Securities when the same shall
     be due and payable.

                                       13
<PAGE>
 
     (b)  if the Company shall act as its own paying agent, it will, on or
before each due date of the principal of and premium, if any, or interest on the
Securities, set aside, segregate and hold in trust for the benefit of the
holders of the Securities a sum sufficient to pay such principal, premium or
interest so becoming due and will notify the Trustee of any failure to take such
action and of any failure by the Company (or by any other obligor under the
Securities) to make any payment of the principal of and premium, if any, or
interest on the Securities when the same shall become due and payable.

     (c)  Anything in this Section 3.4 to the contrary notwithstanding, the
Company may, at any time, for the purpose of obtaining a satisfaction and
discharge with respect to the Securities hereunder, or for any other reason, pay
or cause to be paid to the Trustee all sums held in trust for the Securities by
any paying agent hereunder, as required by this Section 3.4, such sums to be
held by the Trustee upon the trusts herein contained.

     (d)  Anything in this Section 3.4 to the contrary notwithstanding, the
agreement to hold sums in trust as provided in this Section 3.4 is subject to
Sections 11.3 and 11.4.

     SECTION 3.5.  Certificate to Trustee.

     The Company will deliver to the Trustee on or before 120 days after the end
of each fiscal year in each year, commencing with the first fiscal year ending
after the date hereof, so long as Securities are outstanding hereunder, an
Officers' Certificate, one of the signers of which shall be the principal
executive, principal financial or principal accounting officer of the Company
stating that in the course of the performance by the signers of their duties as
officers of the Company they would normally have knowledge of any Default by the
Company in the performance of any covenants contained herein, stating whether or
not they have knowledge of any such Default and, if so, specifying each such
Default of which the signers have knowledge and the nature thereof.

     SECTION 3.6.  Compliance with Consolidation Provisions.

     The Company will not, while any of the Securities remain outstanding,
consolidate with, or merge with or into, any other Person, or sell, convey,
transfer or lease all or substantially all of its properties or assets unless
the provisions of Article X hereof are complied with.

     SECTION 3.7.  Limitation on Dividends.

     The Company will not (i) declare or pay any dividends or distributions on,
or redeem, purchase, acquire, or make a liquidation payment with respect to, any
of the Company's capital stock (which includes common and preferred stock) or
(ii) make any payment of principal, interest or premium, if any, on or repay or
repurchase or redeem any debt securities of the Company (including any Other
Debentures) that rank pari passu with or junior in right of payment to the
Securities or (iii) make any guarantee payments with respect to any guarantee by
the Company of the debt securities of any Subsidiary of the Company (including
Other Guarantees) if such guarantee ranks pari passu or junior in right of
payment to the Securities (other than (a) dividends or distributions in shares
of, or options, warrants or rights to subscribe for or purchase shares of,
Common Stock of the Company, (b) any declaration of a dividend in connection
with the implementation of a stockholder's rights plan, or the issuance of stock
under any such plan in the future, or the redemption or repurchase of any such
rights pursuant thereto, (c) payments under the Capital Securities Guarantee,
(d) as a result of a reclassification of the Company's capital stock or the
exchange or the conversion of one class or series of the Company's capital stock
for another class or series of the Company's capital stock, (e) the purchase of
fractional interests in shares of the Company's capital stock pursuant to the
conversion or exchange provisions of such capital stock or the security being
converted or exchanged and (f) purchases of Common Stock related to the issuance
of Common Stock or rights under any of the Company's benefit plans for its
directors, officers or employees or any of the Company's dividend reinvestment
plans) if at such time (i) there shall have occurred any event of which the
Company has actual knowledge that (a) is, or with the giving of notice or the
lapse of time, or both, would constitute, an Event of Default and (b) in respect
of which the Company shall not have taken reasonable steps to cure, (ii) if such
Securities are held by the Property Trustee, the Company shall be in default
with respect to its payment of any obligations under the Capital 

                                       14
<PAGE>
 
Securities Guarantee or (iii) the Company shall have given notice of its
election of the exercise of its right to extend the interest payment period
pursuant to Section 16.1 and any such extension shall be continuing.

     SECTION 3.8.  Covenants as to BFC Capital Trust

     In the event Securities are issued to BFC Capital Trust or a trustee of
such trust in connection with the issuance of Trust Securities by BFC Capital
Trust, for so long as such Trust Securities remain outstanding, the Company will
(i) maintain 100% direct ownership of the Common Securities of BFC Capital
Trust; provided, however, that any successor of the Company, permitted pursuant
       --------  -------                                                       
to Article X, may succeed to the Company's ownership of such Common Securities,
(ii) use its reasonable efforts to cause BFC Capital Trust (a) to remain a
business trust, except in connection with a distribution of Securities, the
redemption of all of the Trust Securities of BFC Capital Trust or certain
mergers, consolidations or amalgamations, each as permitted by the Declaration
of BFC Capital Trust, and (b) to otherwise continue to be treated as a grantor
trust and not an association taxable as a corporation for United States federal
income tax purposes and (iii) to use its reasonable efforts to cause each holder
of Trust Securities to be treated as owning an undivided beneficial interest in
the Securities.

     SECTION 3.9.  Payment of Expenses.

     In connection with the offering, sale and issuance of the Securities to BFC
Capital Trust and in connection with the sale of the Trust Securities by BFC
Capital Trust, the Company, in its capacity as borrower with respect to the
Securities, shall:

     (a)  pay all costs and expenses relating to the offering, sale and issuance
of the Securities, including commissions to the initial purchasers payable
pursuant to the Purchase Agreement, fees and expenses, to the extent provided
for in the Registration Rights Agreement, in connection with any exchange offer
or other action to be taken pursuant to the Registration Rights Agreement and
compensation of the Trustee in accordance with the provisions of Section 6.6;

     (b)  pay all costs and expenses of BFC Capital Trust (including, but not
limited to, costs and expenses relating to the organization of BFC Capital
Trust, the offering, sale and issuance of the Trust Securities (including
commissions to the initial purchasers in connection therewith), the fees and
expenses of the Property Trustee and the Delaware Trustee, the costs and
expenses relating to the operation of BFC Capital Trust, including without
limitation, costs and expenses of accountants, attorneys, statistical or
bookkeeping services, expenses for printing and engraving and computing or
accounting equipment, paying agent(s), registrar(s), transfer agent(s),
duplicating, travel and telephone and other telecommunications expenses and
costs and expenses incurred in connection with the acquisition, financing, and
disposition of BFC Capital Trust assets;

     (c)  be primarily and fully liable for any indemnification obligations
arising with respect to the Declaration;

     (d)  pay any and all taxes (other than United States withholding taxes
attributable to BFC Capital Trust or its assets) and all liabilities, costs and
expenses with respect to such taxes of BFC Capital Trust; and

     (e)  pay all other fees, expenses, debts and obligations (other than the
Trust Securities) related to BFC Capital Trust.

     SECTION 3.10.  Payment Upon Resignation or Removal.

     Upon termination of this Indenture or the removal or resignation of the
Trustee, unless otherwise stated, the Company shall pay to the Trustee all
amounts accrued and owing to the date of such termination, removal or
resignation.  Upon termination of the Declaration or the removal or resignation
of the Delaware Trustee or the Property Trustee, as the case may be, pursuant to
Section 5.7 of the Declaration, the Company shall pay to the Delaware Trustee or
the Property Trustee, as the case may be, all amounts accrued and owing to the
date of such termination, removal or resignation.

                                       15
<PAGE>
 
                                  ARTICLE IV.

                   SECURITYHOLDERS' LISTS AND REPORTS BY THE
                            COMPANY AND THE TRUSTEE

 
     SECTION 4.1.  Securityholders' Lists.

     The Company covenants and agrees that it will furnish or cause to be
furnished to the Trustee:

     (a)  on a semi-annual basis on each regular record date for the Securities,
a list, in such form as the Trustee may reasonably require, of the names and
addresses of the Securityholders as of such record date; and

     (b)  at such other times as the Trustee may request in writing, within 30
days after the receipt by the Company, of any such request, a list of similar
form and content as of a date not more than 15 days prior to the time such list
is furnished, except that, no such lists need be furnished so long as the
Trustee is in possession thereof by reason of its acting as Security registrar.

     SECTION 4.2.  Preservation and Disclosure of Lists.

     (a)  The Trustee shall preserve, in as current a form as is reasonably
practicable, all information as to the names and addresses of the holders of the
Securities (1) contained in the most recent list furnished to it as provided in
Section 4.1 or (2) received by it in the capacity of Securities registrar (if so
acting) hereunder.  The Trustee may destroy any list furnished to it as provided
in Section 4.1 upon receipt of a new list so furnished

     (b)  In case three or more holders of Securities (hereinafter referred to
as "applicants") apply in writing to the Trustee and furnish to the Trustee
reasonable proof that each such applicant has owned a Security for a period of
at least six months preceding the date of such application, and such application
states that the applicants desire to communicate with other holders of
Securities or with holders of all Securities with respect to their rights under
this Indenture and is accompanied by a copy of the form of proxy or other
communication which such applicants propose to transmit, then the Trustee shall
within 5 Business Days after the receipt of such application, at its election
either:

     (i)  afford such applicants access to the information preserved at the time
     by the Trustee in accordance with the provisions of subsection (a) of this
     Section 4.2, or

     (ii) inform such applicants as to the approximate number of holders of all
     Securities, whose names and addresses appear in the information preserved
     at the time by the Trustee in accordance with the provisions of subsection
     (a) of this Section 4.2, and as to the approximate cost of mailing to such
     Securityholders the form of proxy or other communication, if any, specified
     in such application.

     If the Trustee shall elect not to afford such applicants access to such
information, the Trustee shall, upon the written request of such applicants,
mail to each Securityholder whose name and address appear in the information
preserved at the time by the Trustee in accordance with the provisions of
subsection (a) of this Section 4.2 a copy of the form of proxy or other
communication which is specified in such request with reasonable promptness
after a tender to the Trustee of the material to be mailed and of payment, or
provision for the payment, of the reasonable expenses of mailing, unless within
five days after such tender, the Trustee shall mail to such applicants and file
with the Commission, together with a copy of the material to be mailed, a
written statement to the effect that, in the opinion of the Trustee, such
mailing would be contrary to the best interests of the holders of Securities, or
would be in violation of applicable law.  Such written statement shall specify
the basis of such opinion.  If the Commission, after opportunity for a hearing
upon the objections specified in the written statement so filed, shall enter an
order refusing to sustain any of such objections or if, after the entry of an
order sustaining one or more of such objections, the Commission shall find,
after notice and opportunity for hearing, that all the objections so sustained
have been met and shall enter an order so declaring, the Trustee shall mail
copies of such material to all such Securityholders with reasonable promptness
after the entry of such 

                                       16
<PAGE>
 
order and the renewal of such tender; otherwise the Trustee shall be relieved of
any obligation or duty to such applicants respecting their application.

     (c)  Each and every holder of Securities, by receiving and holding the
same, agrees with the Company and the Trustee that neither the Company nor the
Trustee nor any paying agent shall be held accountable by reason of the
disclosure of any such information as to the names and addresses of the holders
of Securities in accordance with the provisions of subsection (b) of this
Section 4.2, regardless of the source from which such information was derived,
and that the Trustee shall not be held accountable by reason of mailing any
material pursuant to a request made under said subsection (b).

     SECTION 4.3.  Reports of the Company.

     (a)  The Company covenants and agrees to file with the Trustee, within 15
days after the date on which the Company is required to file the same with the
Commission, copies of the annual reports and of the information, documents and
other reports (or copies of such portions of any of the foregoing as said
Commission may from time to time by rules and regulations prescribe) which the
Company may be required to file with the Commission pursuant to Section 13 or
Section 15(d) of the Exchange Act; or, if the Company is not required to file
information, documents or reports pursuant to either of such sections, then to
file with the Trustee and the Commission, in accordance with rules and
regulations prescribed from time to time by the Commission, such of the
supplementary and periodic information, documents and reports which may be
required pursuant to Section 13 of the Exchange Act in respect of a security
listed and registered on a national securities exchange as may be prescribed
from time to time in such rules and regulations.

     (b)  The Company covenants and agrees to file with the Trustee and the
Commission, in accordance with the rules and regulations prescribed from time to
time by said Commission, such additional information, documents and reports with
respect to compliance by the Company with the conditions and covenants provided
for in this Indenture as may be required from time to time by such rules and
regulations.

     (c)  The Company covenants and agrees to transmit by mail to all holders of
Securities, as the names and addresses of such holders appear upon the Security
Register, within 30 days after the filing thereof with the Trustee, such
summaries of any information, documents and reports required to be filed by the
Company pursuant to subsections (a) and (b) of this Section 4.3 as may be
required by rules and regulations prescribed from time to time by the
Commission.

     (d)  Delivery of such reports, information and documents to the Trustee is
for informational purposes only and the Trustee's receipt of such shall not
constitute constructive notice of any information contained therein or
determinable from information contained therein, including the Company's
compliance with any of its covenants hereunder (as to which the Trustee is
entitled to rely exclusively on Officers' Certificates).

     (e)  So long as is required for an offer or sale of the Securities to
qualify for an exemption under Rule 144A under the Securities Act, the Company
shall, upon request, provide the information required by clause (d)(4)
thereunder to each Holder and to each beneficial owner and prospective purchaser
of Securities identified by any holder of Securities, unless such information is
furnished to the Commission pursuant to Section 13 or 15(d) of the Exchange Act.

     SECTION 4.4.  Reports by the Trustee.

     (a)  The Trustee shall transmit to Securityholders such reports concerning
the Trustee and its actions under this Indenture as may be required pursuant to
the Trust Indenture Act at the times and in the manner provided pursuant
thereto.  If required by Section 313(a) of the Trust Indenture Act, the Trustee
shall, within sixty days after each July 15 following the date of this
Indenture, commencing July 15, 1997, deliver to Securityholders a brief report,
dated as of such July 15, which complies with the provisions of such Section
313(a).

     (b)  A copy of each such report shall, at the time of such transmission to
Securityholders, be filed by the Trustee with each stock exchange, if any, upon
which the Securities are listed, with the Commission and with the Company.  The
Company will promptly notify the Trustee when the Securities are listed on any
stock exchange.

                                       17
<PAGE>
 
                                   ARTICLE V.

                  REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                              ON EVENT OF DEFAULT

     SECTION 5.1.  Events of Default.

     One or more of the following events of default shall constitute an Event of
Default hereunder (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary or be effected by operation of law or pursuant
to any judgment, decree or order of any court or any order, rule or regulation
of any administrative or governmental body):

     (a)  default in the payment of any interest upon any Security or any Other
Debenture when it becomes due and payable, and continuance of such default for a
period of 30 days; provided, however, that a valid extension of an interest
                   --------                                                
payment period by the Company in accordance with the terms hereof shall not
constitute a default in the payment of interest for this purpose; or

     (b)  default in the payment of all or any part of the principal of (or
premium, if any, on) any Security or any Other Debenture as and when the same
shall become due and payable either at maturity, upon redemption, by declaration
of acceleration of maturity or otherwise; or

     (c)  default in the performance, or breach, of any covenant or warranty of
the Company in this Indenture (other than a covenant or warranty a default in
whose performance or whose breach is elsewhere in this Section specifically
dealt with), and continuance of such default or breach for a period of 90 days
after there has been given, by registered or certified mail, to the Company by
the Trustee or to the Company and the Trustee by the holders of at least 25% in
aggregate principal amount of the outstanding Securities a written notice
specifying such default or breach and requiring it to be remedied and stating
that such notice is a "Notice of Default" hereunder; or

     (d)  a court having jurisdiction in the premises shall enter a decree or
order for relief in respect of the Company in an involuntary case under any
applicable bankruptcy, insolvency or other similar law now or hereafter in
effect, or appointing a receiver, liquidator, assignee, custodian, trustee,
sequestrator (or similar official) of the Company or for any substantial part of
its property, or ordering the winding-up or liquidation of its affairs and such
decree or order shall remain unstayed and in effect for a period of 90
consecutive days; or

     (e)  the Company shall commence a voluntary case under any applicable
bankruptcy, insolvency or other similar law now or hereafter in effect, shall
consent to the entry of an order for relief in an involuntary case under any
such law, or shall consent to the appointment of or taking possession by a
receiver, liquidator, assignee, trustee, custodian, sequestrator (or other
similar official) of the Company or of any substantial part of its property, or
shall make any general assignment for the benefit of creditors, or shall fail
generally to pay its debts as they become due.

     If an Event of Default with respect to Securities at the time outstanding
occurs and is continuing, then in every such case the Trustee or the holders of
not less than 25% in aggregate principal amount of the Securities then
outstanding may declare the principal amount of all Securities to be due and
payable immediately, by a notice in writing to the Company (and to the Trustee
if given by the holders of the outstanding Securities), and upon any such
declaration the same shall become immediately due and payable.

     The foregoing provisions, however, are subject to the condition that if, at
any time after the principal of the Securities shall have been so declared due
and payable, and before any judgment or decree for the payment of the moneys due
shall have been obtained or entered as hereinafter provided, (i) the Company
shall pay or shall deposit with the Trustee a sum sufficient to pay (A) all
matured installments of interest upon all the Securities and the principal of
and premium, if any, on any and all Securities which shall have become due
otherwise than by acceleration (with interest upon such principal and premium,
if any, and, to the extent that payment of such interest is enforceable under
applicable law, on overdue installments of interest, at the same rate as the
rate of interest specified in the Securities to the date of 

                                       18
<PAGE>
 
such payment or deposit) and (B) such amount as shall be sufficient to cover
reasonable compensation to the Trustee and each predecessor Trustee, their
respective agents, attorneys and counsel, and all other expenses and liabilities
incurred, and all advances made, by the Trustee and each predecessor Trustee
except as a result of negligence or bad faith, and (ii) any and all Events of
Default under the Indenture shall have been cured, waived or otherwise remedied
as provided herein, then, in every such case, the holders of a majority in
aggregate principal amount of the Securities then outstanding, by written notice
to the Company and to the Trustee, may rescind and annul such declaration and
its consequences, but no such waiver or rescission and annulment shall extend to
or shall affect any subsequent default or shall impair any right consequent
thereon.

     In case the Trustee shall have proceeded to enforce any right under this
Indenture and such proceedings shall have been discontinued or abandoned because
of such rescission and annulment or for any other reason or shall have been
determined adversely to the Trustee, then and in every such case the Company,
the Trustee and the holders of the Securities shall be restored respectively to
their several positions and rights hereunder, and all rights, remedies and
powers of the Company, the Trustee and the holders of the Securities shall
continue as though no such proceeding had been taken.

     SECTION 5.2.  Payment of Securities on Default; Suit Therefor.

     The Company covenants that (a) in case default shall be made in the payment
of any installment of interest upon any of the Securities as and when the same
shall become due and payable, and such default shall have continued for a period
of 30 days, or (b) in case default shall be made in the payment of the principal
of or premium, if any, on any of the Securities as and when the same shall have
become due and payable, whether at maturity of the Securities or upon redemption
or by declaration of acceleration of maturity or otherwise, then, upon demand of
the Trustee, the Company will pay to the Trustee, for the benefit of the holders
of the Securities, the whole amount that then shall have become due and payable
on all such Securities for principal and premium, if any, or interest, or both,
as the case may be, with interest upon the overdue principal and premium, if
any, and (to the extent that payment of such interest is enforceable under
applicable law and, if the Securities are held by BFC Capital Trust or a trustee
of such trust, without duplication of any other amounts paid by BFC Capital
Trust or trustee in respect thereof) upon the overdue installments of interest
at the rate borne by the Securities; and, in addition thereto, such further
amount as shall be sufficient to cover the costs and expenses of collection,
including a reasonable compensation to the Trustee, its agents, attorneys and
counsel, and any expenses or liabilities incurred by the Trustee hereunder other
than through its negligence or bad faith.

     In case the Company shall fail forthwith to pay such amounts upon such
demand, the Trustee, in its own name and as trustee of an express trust, shall
be entitled and empowered to institute any actions or proceedings at law or in
equity for the collection of the sums so due and unpaid, and may prosecute any
such action or proceeding to judgment or final decree, and may enforce any such
judgment or final decree against the Company or any other obligor on the
Securities and collect in the manner provided by law out of the property of the
Company or any other obligor on the Securities wherever situated the moneys
adjudged or decreed to be payable.

     In case there shall be pending proceedings for the bankruptcy or for the
reorganization of the Company or any other obligor on the Securities under Title
11, United States Code, or any other applicable law, or in case a receiver or
trustee shall have been appointed for the property of the Company or such other
obligor, or in the case of any other similar judicial proceedings relative to
the Company or other obligor upon the Securities, or to the creditors or
property of the Company or such other obligor, the Trustee, irrespective of
whether the principal of the Securities shall then be due and payable as therein
expressed or by declaration or otherwise and irrespective of whether the Trustee
shall have made any demand pursuant to the provisions of this Section 5.2, shall
be entitled and empowered, by intervention in such proceedings or otherwise, to
file and prove a claim or claims for the whole amount of principal and interest
owing and unpaid in respect of the Securities and, in case of any judicial
proceedings, to file such proofs of claim and other papers or documents as may
be necessary or advisable in order to have the claims of the Trustee (including
any claim for reasonable compensation to the Trustee and each predecessor
Trustee, and their respective agents, attorneys and counsel, and for
reimbursement of all expenses and liabilities incurred, and all advances made,
by the Trustee and each predecessor Trustee, except as a result of negligence or
bad faith) and of the Securityholders allowed in such judicial proceedings
relative to the Company or any other obligor on the Securities, or to the
creditors or property of the 

                                       19
<PAGE>
 
Company or such other obligor, unless prohibited by applicable law and
regulations, to vote on behalf of the holders of the Securities in any election
of a trustee or a standby trustee in arrangement, reorganization, liquidation or
other bankruptcy or insolvency proceedings or person performing similar
functions in comparable proceedings, and to collect and receive any moneys or
other property payable or deliverable on any such claims, and to distribute the
same after the deduction of its charges and expenses; and any receiver, assignee
or trustee in bankruptcy or reorganization is hereby authorized by each of the
Securityholders to make such payments to the Trustee, and, in the event that the
Trustee shall consent to the making of such payments directly to the
Securityholders, to pay to the Trustee such amounts as shall be sufficient to
cover reasonable compensation to the Trustee, each predecessor Trustee and their
respective agents, attorneys and counsel, and all other expenses and liabilities
incurred, and all advances made, by the Trustee and each predecessor Trustee
except as a result of negligence or bad faith.

     Nothing herein contained shall be construed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Securityholder any
plan of reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any holder thereof or to authorize the Trustee to
vote in respect of the claim of any Securityholder in any such proceeding.

     All rights of action and of asserting claims under this Indenture, or under
any of the Securities, may be enforced by the Trustee without the possession of
any of the Securities, or the production thereof on any trial or other
proceeding relative thereto, and any such suit or proceeding instituted by the
Trustee shall be brought in its own name as trustee of an express trust, and any
recovery of judgment shall be for the ratable benefit of the holders of the
Securities.

     In any proceedings brought by the Trustee (and also any proceedings
involving the interpretation of any provision of this Indenture to which the
Trustee shall be a party) the Trustee shall be held to represent all the holders
of the Securities, and it shall not be necessary to make any holders of the
Securities parties to any such proceedings.

     SECTION 5.3.  Application of Moneys Collected by Trustee.

     Any moneys collected by the Trustee shall be applied in the order
following, at the date or dates fixed by the Trustee for the distribution of
such moneys, upon presentation of the Securities in respect of which moneys have
been collected, and stamping thereon the payment, if only partially paid, and
upon surrender thereof if fully paid:

     First: To the payment of costs and expenses of collection applicable to the
Securities and reasonable compensation to the Trustee, its agents, attorneys and
counsel, and of all other expenses and liabilities incurred, and all advances
made, by the Trustee except as a result of its negligence or bad faith;

     Second: To the payment of all Senior Indebtedness of the Company if and to
the extent required by Article XV;

     Third: To the payment of the amounts then due and unpaid upon Securities
for principal of (and premium, if any) and interest on the Securities, in
respect of which or for the benefit of which money has been collected, ratably,
without preference of priority of any kind, according to the amounts due on such
Securities for principal (and premium, if any) and interest, respectively; and

     Fourth: To the Company.

     SECTION 5.4.  Proceedings by Securityholders.

     No holder of any Security shall have any right by virtue of or by availing
of any provision of this Indenture to institute any suit, action or proceeding
in equity or at law upon or under or with respect to this Indenture or for the
appointment of a receiver or trustee, or for any other remedy hereunder, unless
such holder previously shall have given to the Trustee written notice of an
Event of Default and of the continuance thereof with respect to the Securities
specifying such Event of Default, as hereinbefore provided, and unless also the
holders of not less than 25% in aggregate principal amount of the Securities
then outstanding shall have made written request upon the Trustee to institute
such action, suit or proceeding in its own name as Trustee hereunder and shall
have offered to the Trustee such reasonable 

                                       20
<PAGE>
 
indemnity as it may require against the costs, expenses and liabilities to be
incurred therein or thereby, and the Trustee for 60 days after its receipt of
such notice, request and offer of indemnity shall have failed to institute any
such action, suit or proceeding, it being understood and intended, and being
expressly covenanted by the taker and holder of every Security with every other
taker and holder and the Trustee, that no one or more holders of Securities
shall have any right in any manner whatever by virtue of or by availing of any
provision of this Indenture to affect, disturb or prejudice the rights of any
other holder of Securities, or to obtain or seek to obtain priority over or
preference to any other such holder, or to enforce any right under this
Indenture, except in the manner herein provided and for the equal, ratable and
common benefit of all holders of Securities.

     Notwithstanding any other provisions in this Indenture, however, the right
of any holder of any Security to receive payment of the principal of (premium,
if any) and interest on such Security, on or after the same shall have become
due and payable, or to institute suit for the enforcement of any such payment,
shall not be impaired or affected without the consent of such holder and by
accepting a Security hereunder it is expressly understood, intended and
covenanted by the taker and holder of every Security with every other such taker
and holder and the Trustee, that no one or more holders of Securities shall have
any right in any manner whatsoever by virtue or by availing of any provision of
this Indenture to affect, disturb or prejudice the rights of the holders of any
other Securities, or to obtain or seek to obtain priority over or preference to
any other such holder, or to enforce any right under this Indenture, except in
the manner herein provided and for the equal, ratable and common benefit of all
holders of Securities.  For the protection and enforcement of the provisions of
this Section, each and every Securityholder and the Trustee shall be entitled to
such relief as can be given either at law or in equity.

     The Company and the Trustee acknowledge that pursuant to the Declaration,
the holders of Capital Securities are entitled, in the circumstances and subject
to the limitations set forth therein, to commence a Direct Action with respect
to any Event of Default under this Indenture and the Securities.

     SECTION 5.5.  Proceedings by Trustee.

     In case an Event of Default occurs with respect to Securities and is
continuing, the Trustee may in its discretion proceed to protect and enforce the
rights vested in it by this Indenture by such appropriate judicial proceedings
as the Trustee shall deem most effectual to protect and enforce any of such
rights, either by suit in equity or by action at law or by proceeding in
bankruptcy or otherwise, whether for the specific enforcement of any covenant or
agreement contained in this Indenture or in aid of the exercise of any power
granted in this Indenture, or to enforce any other legal or equitable right
vested in the Trustee by this Indenture or by law.

     SECTION 5.6.  Remedies Cumulative and Continuing.

     All powers and remedies given by this Article V to the Trustee or to the
Securityholders shall, to the extent permitted by law, be deemed cumulative and
not exclusive of any other powers and remedies available to the Trustee or the
holders of the Securities, by judicial proceedings or otherwise, to enforce the
performance or observance of the covenants and agreements contained in this
Indenture or otherwise established with respect to the Securities, and no delay
or omission of the Trustee or of any holder of any of the Securities to exercise
any right or power accruing upon any Event of Default occurring and continuing
as aforesaid shall impair any such right or power, or shall be construed to be a
waiver of any such default or an acquiescence therein; and, subject to the
provisions of Section 5.4, every power and remedy given by this Article V or by
law to the Trustee or to the Securityholders may be exercised from time to time,
and as often as shall be deemed expedient, by the Trustee or by the
Securityholders.

     SECTION 5.7.  Direction of Proceedings and Waiver of Defaults by Majority
of Securityholders.

     The holders of a majority in aggregate principal amount of the Securities
at the time outstanding shall have the right to direct the time, method, and
place of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred on the Trustee; provided, however, that
                                                        --------  -------      
(subject to the provisions of Section 6.1) the Trustee shall have the right to
decline to follow any such direction if the Trustee shall determine that the
action so directed would be unjustly prejudicial to the holders not taking part
in such direction or if the Trustee being advised by 

                                       21
<PAGE>
 
counsel determines that the action or proceeding so directed may not lawfully be
taken or if the Trustee in good faith by its board of directors or trustees,
executive committee, or a trust committee of directors or trustees and/or
Responsible Officers shall determine that the action or proceedings so directed
would involve the Trustee in personal liability. Prior to any declaration
accelerating the maturity of the Securities, the holders of a majority in
aggregate principal amount of the Securities at the time outstanding may on
behalf of the holders of all of the Securities waive any past default or Event
of Default and its consequences except a default (a) in the payment of principal
of or premium, if any, or interest on any of the Securities or (b) in respect of
covenants or provisions hereof which cannot be modified or amended without the
consent of the holder of each Security affected; provided, however, that if the
                                                 --------  -------  
Securities are held by the Property Trustee, such waiver or modification to such
waiver shall not be effective until the holders of a majority in aggregate
liquidation amount of Trust Securities shall have consented to such waiver or
modification to such waiver; provided further, that if the consent of the holder
                             -------- ------- 
of each outstanding Security is required, such waiver shall not be effective
until each holder of the Trust Securities shall have consented to such waiver.
Upon any such waiver, the default covered thereby shall be deemed to be cured
for all purposes of this Indenture and the Company, the Trustee and the holders
of the Securities shall be restored to their former positions and rights
hereunder, respectively; but no such waiver shall extend to any subsequent or
other default or impair any right consequent thereon. Whenever any default or
Event of Default hereunder shall have been waived as permitted by this Section
5.7, said default or Event of Default shall for all purposes of the Securities
and this Indenture be deemed to have been cured and to be not continuing.

     SECTION 5.8.  Notice of Defaults.

     The Trustee shall, within 90 days after the occurrence of a Default with
respect to the Securities mail to all Securityholders, as the names and
addresses of such holders appear upon the Security register, notice of all
Defaults known to the Trustee, unless such Defaults shall have been cured before
the giving of such notice; and provided that, except in the case of a Default
arising from the nonpayment of the principal of or premium, if any, or interest
on any of the Securities, the Trustee shall be protected in withholding such
notice if and so long as the board of directors, the executive committee, or a
trust committee of directors and/or Responsible Officers of the Trustee in good
faith determines that the withholding of such notice is in the interests of the
Securityholders; and provided further, that in the case of any Default of the
character specified in Section 5.1(c) no such notice to Securityholders shall be
given until at least 60 days after the occurrence thereof but shall be given
within 90 days after such occurrence.

     SECTION 5.9.  Undertaking to Pay Costs.

     All parties to this Indenture agree, and each holder of any Security by his
acceptance thereof shall be deemed to have agreed, that any court may in its
discretion require, in any suit for the enforcement of any right or remedy under
this Indenture, or in any suit against the Trustee for any action taken or
omitted by it as Trustee, the filing by any party litigant in such suit of an
undertaking to pay the costs of such suit, and that such court may in its
discretion assess reasonable costs, including reasonable attorneys' fees and
expenses, against any party litigant in such suit, having due regard to the
merits and good faith of the claims or defenses made by such party litigant; but
the provisions of this Section 5.9 shall not apply to any suit instituted by the
Trustee, to any suit instituted by any Securityholder, or group of
Securityholders, holding in the aggregate more than 10% in aggregate principal
amount of the Securities outstanding, or to any suit instituted by any
Securityholder for the enforcement of the payment of the principal of (or
premium, if any) or interest on any Security against the Company on or after the
same shall have become due and payable.

                                  ARTICLE VI.

                             CONCERNING THE TRUSTEE

     SECTION 6.1.  Duties and Responsibilities of Trustee.

     With respect to the holders of the Securities issued hereunder, the
Trustee, prior to the occurrence of an Event of Default and after the curing or
waiving of all Events of Default which may have occurred, undertakes to perform
such duties and only such duties as are specifically set forth in this
Indenture.  In case an Event of Default has occurred (which has not been cured
or waived) the Trustee shall exercise such of the rights and powers vested in it
by this Indenture, and 

                                       22
<PAGE>
 
use the same degree of care and skill in their exercise, as a prudent person
would exercise or use under the circumstances in the conduct of his own affairs.

     No provision of this Indenture shall be construed to relieve the Trustee
from liability for its own negligent action, its own negligent failure to act or
its own willful misconduct, except that

     (a)  prior to the occurrence of an Event of Default and after the curing or
waiving of all Events of Default which may have occurred

     (i)  the duties and obligations of the Trustee shall be determined solely
     by the express provisions of this Indenture, and the Trustee shall not be
     liable except for the performance of such duties and obligations as are
     specifically set forth in this Indenture, and no implied covenants or
     obligations shall be read into this Indenture against the Trustee; and

     (ii) in the absence of bad faith on the part of the Trustee, the Trustee
     may conclusively rely, as to the truth of the statements and the
     correctness of the opinions expressed therein, upon any certificates or
     opinions furnished to the Trustee and conforming to the requirements of
     this Indenture; but, in the case of any such certificates or opinions which
     by any provision hereof are specifically required to be furnished to the
     Trustee, the Trustee shall be under a duty to examine the same to determine
     whether or not they conform to the requirements of this Indenture;

     (b)  the Trustee shall not be liable for any error of judgment made in good
faith by a Responsible Officer or Officers of the Trustee, unless it shall be
proved that the Trustee was negligent in ascertaining the pertinent facts; and

     (c)  the Trustee shall not be liable with respect to any action taken or
omitted to be taken by it in good faith, in accordance with the direction of the
Securityholders pursuant to Section 5.7, relating to the time, method and place
of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred upon the Trustee, under this Indenture.

     None of the provisions contained in this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur personal financial
liability in the performance of any of its duties or in the exercise of any of
its rights or powers, if there is reasonable ground for believing that the
repayment of such funds or liability is not reasonably assured to it under the
terms of this Indenture or adequate indemnity against such risk is not
reasonably assured to it.

     SECTION 6.2.  Reliance on Documents, Opinions, etc.

     Except as otherwise provided in Section 6.1:

     (a)  the Trustee may rely and shall be protected in acting or refraining
from acting upon any resolution, certificate, statement, instrument, opinion,
report, notice, request, consent, order, bond, note, debenture or other paper or
document believed by it to be genuine and to have been signed or presented by
the proper party or parties;

     (b)  any request, direction, order or demand of the Company mentioned
herein may be sufficiently evidenced by an Officers' Certificate (unless other
evidence in respect thereof be herein specifically prescribed); and any Board
Resolution may be evidenced to the Trustee by a copy thereof certified by the
Secretary or an Assistant Secretary of the Company;

     (c)  the Trustee may consult with counsel of its selection and any advice
or Opinion of Counsel shall be full and complete authorization and protection in
respect of any action taken or suffered omitted by it hereunder in good faith
and in accordance with such advice or Opinion of Counsel;

     (d)  the Trustee shall be under no obligation to exercise any of the rights
or powers vested in it by this Indenture at the request, order or direction of
any of the Securityholders, pursuant to the provisions of this Indenture, 

                                       23
<PAGE>
 
unless such Securityholders shall have offered to the Trustee reasonable
security or indemnity against the costs, expenses and liabilities which may be
incurred therein or thereby;

     (e)  the Trustee shall not be liable for any action taken or omitted by it
in good faith and believed by it to be authorized or within the discretion or
rights or powers conferred upon it by this Indenture; nothing contained herein
shall, however, relieve the Trustee of the obligation, upon the occurrence of an
Event of Default (that has not been cured or waived), to exercise such of the
rights and powers vested in it by this Indenture, and to use the same degree of
care and skill in their exercise, as a prudent person would exercise or use
under the circumstances in the conduct of his own affairs;

     (f)  the Trustee shall not be bound to make any investigation into the
facts or matters stated in any resolution, certificate, statement, instrument,
opinion, report, notice, request, consent, order, approval, bond, debenture,
coupon or other paper or document, unless requested in writing to do so by the
holders of a majority in aggregate principal amount of the outstanding
Securities; provided, however, that if the payment within a reasonable time to
            --------  -------
the Trustee of the costs, expenses or liabilities likely to be incurred by it in
the making of such investigation is, in the opinion of the Trustee, not
reasonably assured to the Trustee by the security afforded to it by the terms of
this Indenture, the Trustee may require reasonable indemnity against such
expense or liability as a condition to so proceeding; and

     (g)  the Trustee may execute any of the trusts or powers hereunder or
perform any duties hereunder either directly or by or through agents (including
any Authenticating Agent) or attorneys, and the Trustee shall not be responsible
for any misconduct or negligence on the part of any such agent or attorney
appointed by it with due care.

     SECTION 6.3.  No Responsibility for Recitals, etc.

     The recitals contained herein and in the Securities (except in the
certificate of authentication of the Trustee or the Authenticating Agent) shall
be taken as the statements of the Company and the Trustee and the Authenticating
Agent assume no responsibility for the correctness of the same.  The Trustee and
the Authenticating Agent make no representations as to the validity or
sufficiency of this Indenture or of the Securities.  The Trustee and the
Authenticating Agent shall not be accountable for the use or application by the
Company of any Securities or the proceeds of any Securities authenticated and
delivered by the Trustee or the Authenticating Agent in conformity with the
provisions of this Indenture.

     SECTION 6.4.  Trustee, Authenticating Agent, Paying Agents, Transfer Agents
or Registrar May Own Securities.

     The Trustee or any Authenticating Agent or any paying agent or any transfer
agent or any Security registrar, in its individual or any other capacity, may
become the owner or pledgee of Securities with the same rights it would have if
it were not Trustee, Authenticating Agent, paying agent, transfer agent or
Security registrar.

     SECTION 6.5.  Moneys to be Held in Trust.

     Subject to the provisions of Section 11.4, all moneys received by the
Trustee or any paying agent shall, until used or applied as herein provided, be
held in trust for the purpose for which they were received, but need not be
segregated from other funds except to the extent required by law.  The Trustee
and any paying agent shall be under no liability for interest on any money
received by it hereunder except as otherwise agreed in writing with the Company.
So long as no Event of Default shall have occurred and be continuing, all
interest allowed on any such moneys shall be paid from time to time upon the
written order of the Company, signed by an Officer thereof.

     SECTION 6.6.  Compensation and Expenses of Trustee.

     The Company, as borrower, covenants and agrees to pay to the Trustee from
time to time, and the Trustee shall be entitled to, such compensation as shall
be agreed to in writing between the Company and the Trustee (which shall not be
limited by any provision of law in regard to the compensation of a trustee of an
express trust), and the Company will 

                                       24
<PAGE>
 
pay or reimburse the Trustee upon its request for all reasonable expenses,
disbursements and advances incurred or made by the Trustee in accordance with
any of the provisions of this Indenture (including the reasonable compensation
and the expenses and disbursements of its counsel and of all Persons not
regularly in its employ) except any such expense, disbursement or advance as may
arise from its negligence or bad faith. The Company also covenants to indemnify
each of the Trustee and any predecessor Trustee (and its officers, agents,
directors and employees) for, and to hold them harmless against, any and all
loss, damage, claim, liability or expense including taxes (other than taxes
based on the income of the Trustee) incurred without negligence or bad faith on
the part of the Trustee and arising out of or in connection with the acceptance
or administration of this trust, including the costs and expenses of defending
itself against any claim of liability in the premises. The obligations of the
Company under this Section 6.6 to compensate and indemnify the Trustee and to
pay or reimburse the Trustee for expenses, disbursements and advances shall
constitute additional indebtedness hereunder. Such additional indebtedness shall
be secured by a lien prior to that of the Securities upon all property and funds
held or collected by the Trustee as such, except funds held in trust for the
benefit of the holders of particular Securities.

     When the Trustee incurs expenses or renders services in connection with an
Event of Default specified in Section 5.1(d) or Section 5.1(e), the expenses
(including the reasonable charges and expenses of its counsel) and the
compensation for the services are intended to constitute expenses of
administration under any applicable federal or state bankruptcy, insolvency or
other similar law.

     The provisions of this Section shall survive the termination of this
Indenture.

     SECTION 6.7.  Officers' Certificate as Evidence.

     Except as otherwise provided in Sections 6.1 and 6.2, whenever in the
administration of the provisions of this Indenture the Trustee shall deem it
necessary or desirable that a matter be proved or established prior to taking or
omitting any action hereunder, such matter (unless other evidence in respect
thereof is herein specifically prescribed) may, in the absence of negligence or
bad faith on the part of the Trustee, be deemed to be conclusively proved and
established by an Officers' Certificate delivered to the Trustee, and such
certificate, in the absence of negligence or bad faith on the part of the
Trustee, shall be full warrant to the Trustee for any action taken or omitted by
it under the provisions of this Indenture upon the faith thereof.

     SECTION 6.8.  Conflicting Interest of Trustee.

     If the Trustee has or shall acquire any "conflicting interest" within the
meaning of Section 310(b) of the Trust Indenture Act, the Trustee and the
Company shall in all respects comply with the provisions of Section 310(b) of
the Trust Indenture Act.

     SECTION 6.9.  Eligibility of Trustee.

     The Trustee hereunder shall at all times be a corporation organized and
doing business under the laws of the United States of America or any state or
territory thereof or of the District of Columbia or a corporation or other
Person permitted to act as trustee by the Commission authorized under such laws
to exercise corporate trust powers, having a combined capital and surplus of at
least 50 million U.S. dollars ($50,000,000) and subject to supervision or
examination by federal, state, territorial, or District of Columbia authority.
If such corporation publishes reports of condition at least annually, pursuant
to law or to the requirements of the aforesaid supervising or examining
authority, then for the purposes of this Section 6.9 the combined capital and
surplus of such corporation shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published.

     The Company may not, nor may any Person directly or indirectly controlling,
controlled by, or under common control with the Company, serve as Trustee.

     In case at any time the Trustee shall cease to be eligible in accordance
with the provisions of this Section 6.9, the Trustee shall resign immediately in
the manner and with the effect specified in Section 6.10.

                                       25
<PAGE>
 
     SECTION 6.10.  Resignation or Removal of Trustee.

     (a)  The Trustee, or any trustee or trustees hereafter appointed, may at
any time resign by giving written notice of such resignation to the Company and
by mailing notice thereof to the holders of the Securities at their addresses as
they shall appear on the Security register. Upon receiving such notice of
resignation, the Company shall promptly appoint a successor trustee or trustees
by written instrument, in duplicate, one copy of which instrument shall be
delivered to the resigning Trustee and one copy to the successor trustee. If no
successor trustee shall have been so appointed and have accepted appointment
within 60 days after the mailing of such notice of resignation to the affected
Securityholders, the resigning Trustee may petition any court of competent
jurisdiction for the appointment of a successor trustee, or any Securityholder
who has been a bona fide holder of a Security for at least six months may,
subject to the provisions of Section 5.9, on behalf of himself and all others
similarly situated, petition any such court for the appointment of a successor
trustee. Such court may thereupon, after such notice, if any, as it may deem
proper and prescribe, appoint a successor trustee.

     (b)  In case at any time any of the following shall occur --

          (i)  the Trustee shall fail to comply with the provisions of Section
          6.8 after written request therefor by the Company or by any
          Securityholder who has been a bona fide holder of a Security or
          Securities for at least six months, or

          (ii) the Trustee shall cease to be eligible in accordance with the
          provisions of Section 6.9 and shall fail to resign after written
          request therefor by the Company or by any such Securityholder, or

          (ii) the Trustee shall become incapable of acting, or shall be
          adjudged a bankrupt or insolvent, or a receiver of the Trustee or of
          its property shall be appointed, or any public officer shall take
          charge or control of the Trustee or of its property or affairs for the
          purpose of rehabilitation, conservation or liquidation,

     then, in any such case, the Company may remove the Trustee and appoint a
successor trustee by written instrument, in duplicate, one copy of which
instrument shall be delivered to the Trustee so removed and one copy to the
successor trustee, or, subject to the provisions of Section 5.9, any
Securityholder who has been a bona fide holder of a Security for at least six
months may, on behalf of himself and all others similarly situated, petition any
court of competent jurisdiction for the removal of the Trustee and the
appointment of a successor trustee.  Such court may thereupon, after such
notice, if any, as it may deem proper and prescribe, remove the Trustee and
appoint a successor trustee.

     (c)  The holders of a majority in aggregate principal amount of the
Securities at the time outstanding may at any time remove the Trustee and
nominate a successor trustee, which shall be deemed appointed as successor
trustee unless within 10 days after such nomination the Company objects thereto
or if no successor trustee shall have been so appointed and shall have accepted
appointment within 30 days after such removal, in which case the Trustee so
removed or any Securityholder, upon the terms and conditions and otherwise as in
subsection (a) of this Section 6.10 provided, may petition any court of
competent jurisdiction for an appointment of a successor trustee.

     (d)  Any resignation or removal of the Trustee and appointment of a
successor trustee pursuant to any of the provisions of this Section 6.10 shall
become effective upon acceptance of appointment by the successor trustee as
provided in Section 6.11.

     SECTION 6.11.  Acceptance by Successor Trustee.

     Any successor trustee appointed as provided in Section 6.10 shall execute,
acknowledge and deliver to the Company and to its predecessor trustee an
instrument accepting such appointment hereunder, and thereupon the resignation
or removal of the retiring trustee shall become effective and such successor
trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, duties and obligations of its predecessor hereunder,
with like effect as if originally named as trustee herein; but, nevertheless, on
the written request of the Company or of 

                                       26
<PAGE>
 
the successor trustee, the trustee ceasing to act shall, upon payment of any
amounts then due it pursuant to the provisions of Section 6.6, execute and
deliver an instrument transferring to such successor trustee all the rights and
powers of the trustee so ceasing to act and shall duly assign, transfer and
deliver to such successor trustee all property and money held by such retiring
trustee thereunder. Upon request of any such successor trustee, the Company
shall execute any and all instruments in writing for more fully and certainly
vesting in and confirming to such successor trustee all such rights and powers.
Any trustee ceasing to act shall, nevertheless, retain a lien upon all property
or funds held or collected by such trustee to secure any amounts then due it
pursuant to the provisions of Section 6.6.

     No successor trustee shall accept appointment as provided in this Section
6.11 unless at the time of such acceptance such successor trustee shall be
qualified under the provisions of Section 6.8 and eligible under the provisions
of Section 6.9.

     Upon acceptance of appointment by a successor trustee as provided in this
Section 6.11, the Company shall mail notice of the succession of such trustee
hereunder to the holders of Securities at their addresses as they shall appear
on the Security register.  If the Company fails to mail such notice within 10
days after the acceptance of appointment by the successor trustee, the successor
trustee shall cause such notice to be mailed at the expense of the Company.

     SECTION 6.12.  Successor by Merger, etc.

     Any corporation into which the Trustee may be merged or converted or with
which it may be consolidated, or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder without
the execution or filing of any paper or any further act on the part of any of
the parties hereto.

     In case at the time such successor to the Trustee shall succeed to the
trusts created by this Indenture any Securities shall have been authenticated
but not delivered, any such successor to the Trustee may adopt the certificate
of authentication of any predecessor trustee, and deliver such Securities so
authenticated; and in case at that time any of the Securities shall not have
been authenticated, any successor to the Trustee may authenticate such
Securities either in the name of any predecessor hereunder or in the name of the
successor trustee; and in all such cases such certificates shall have the full
force which the Securities or this Indenture elsewhere provides that the
certificate of the Trustee shall have; provided, however, that the right to
                                       --------  -------                   
adopt the certificate of authentication of any predecessor Trustee or
authenticate Securities in the name of any predecessor Trustee shall apply only
to its successor or successors by merger, conversion or consolidation.

     SECTION 6.13.  Limitation on Rights of Trustee as a Creditor.

     The Trustee shall comply with Section 311(a) of the Trust Indenture Act,
excluding any creditor relationship described in Section 311(b) of the Trust
Indenture Act.  A Trustee who has resigned or been removed shall be subject to
Section 311(a) of the Trust Indenture Act to the extent included therein.

     SECTION 6.14.  Authenticating Agents.

     There may be one or more Authenticating Agents appointed by the Trustee
upon the request of the Company with power to act on its behalf and subject to
its direction in the authentication and delivery of Securities issued upon
exchange or transfer thereof as fully to all intents and purposes as though any
such Authenticating Agent had been expressly authorized to authenticate and
deliver Securities; provided, that the Trustee shall have no liability to the
Company for any acts or omissions of the Authenticating Agent with respect to
the authentication and delivery of Securities.  Any such Authenticating Agent
shall at all times be a corporation organized and doing business under the laws
of the United States or of any state or territory thereof or of the District of
Columbia authorized under such laws to act as Authenticating Agent, having a
combined capital and surplus of at least $5,000,000 and being subject to
supervision or examination by federal, state, territorial or District of
Columbia authority.  If such corporation publishes reports of condition at least
annually pursuant to law or the requirements of such authority, then for the
purposes of this 

                                       27
<PAGE>
 
Section 6.14 the combined capital and surplus of such corporation shall be
deemed to be its combined capital and surplus as set forth in its most recent
report of condition so published. If at any time an Authenticating Agent shall
cease to be eligible in accordance with the provisions of this Section, it shall
resign immediately in the manner and with the effect herein specified in this
Section.

     Any corporation into which any Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, consolidation or conversion to which any Authenticating Agent
shall be a party, or any corporation succeeding to the corporate trust business
of any Authenticating Agent, shall be the successor of such Authenticating Agent
hereunder, if such successor corporation is otherwise eligible under this
Section 6.14 without the execution or filing of any paper or any further act on
the part of the parties hereto or such Authenticating Agent.

     Any Authenticating Agent may at any time resign by giving written notice of
resignation to the Trustee and to the Company.  The Trustee may at any time
terminate the agency of any Authenticating Agent by giving written notice of
termination to such Authenticating Agent and to the Company.  Upon receiving
such a notice of resignation or upon such a termination, or in case at any time
any Authenticating Agent shall cease to be eligible under this Section 6.14, the
Trustee may, and upon the request of the Company shall, promptly appoint a
successor Authenticating Agent eligible under this Section 6.14, shall give
written notice of such appointment to the Company and shall mail notice of such
appointment to all Securityholders as the names and addresses of such holders
appear on the Security Register.  Any successor Authenticating Agent upon
acceptance of its appointment hereunder shall become vested with all rights,
powers, duties and responsibilities of its predecessor hereunder, with like
effect as if originally named as Authenticating Agent herein.

     The Company, as borrower, agrees to pay to any Authenticating Agent from
time to time reasonable compensation for its services.  Any Authenticating Agent
shall have no responsibility or liability for any action taken by it as such in
accordance with the directions of the Trustee.

                                  ARTICLE VII.

                         CONCERNING THE SECURITYHOLDERS

     SECTION 7.1.  Action by Securityholders.

     Whenever in this Indenture it is provided that the holders of a specified
percentage in aggregate principal amount of the Securities may take any action
(including the making of any demand or request, the giving of any notice,
consent or waiver or the taking of any other action) the fact that at the time
of taking any such action the holders of such specified percentage have joined
therein may be evidenced (a) by any instrument or any number of instruments of
similar tenor executed by such Securityholders in person or by agent or proxy
appointed in writing, or (b) by the record of such holders of Securities voting
in favor thereof at any meeting of such Securityholders duly called and held in
accordance with the provisions of Article VIII, or (c) by a combination of such
instrument or instruments and any such record of such a meeting of such
Securityholders.

     If the Company shall solicit from the Securityholders any request, demand,
authorization, direction, notice, consent, waiver or other action, the Company
may, at its option, as evidenced by an Officers' Certificate, fix in advance a
record date for the determination of Securityholders entitled to give such
request, demand, authorization, direction, notice, consent, waiver or other
action, but the Company shall have no obligation to do so.  If such a record
date is fixed, such request, demand, authorization, direction, notice, consent,
waiver or other action may be given before or after the record date, but only
the Securityholders of record at the close of business on the record date shall
be deemed to be Securityholders for the purposes of determining whether
Securityholders of the requisite proportion of outstanding Securities have
authorized or agreed or consented to such request, demand, authorization,
direction, notice, consent, waiver or other action, and for that purpose the
outstanding Securities shall be computed as of the record date; provided,
                                                                -------- 
however, that no such authorization, agreement or consent by such
- -------                                                          
Securityholders on the record date shall be deemed 

                                       28
<PAGE>
 
effective unless it shall become effective pursuant to the provisions of this
Indenture not later than six months after the record date.

     SECTION 7.2.  Proof of Execution by Securityholders.

     Subject to the provisions of Section 6.1, 6.2 and 8.5, proof of the
execution of any instrument by a Securityholder or his agent or proxy shall be
sufficient if made in accordance with such reasonable rules and regulations as
may be prescribed by the Trustee or in such manner as shall be satisfactory to
the Trustee.  The ownership of Securities shall be proved by the Security
Register or by a certificate of the Security registrar. The Trustee may require
such additional proof of any matter referred to in this Section as it shall deem
necessary.

     The record of any Securityholders' meeting shall be proved in the manner
provided in Section 8.6.

     SECTION 7.3.  Who Are Deemed Absolute Owners.

     Prior to due presentment for registration of transfer of any Security, the
Company, the Trustee, any Authenticating Agent, any paying agent, any transfer
agent and any Security registrar may deem the Person in whose name such Security
shall be registered upon the Security Register to be, and may treat him as, the
absolute owner of such Security (whether or not such Security shall be overdue)
for the purpose of receiving payment of or on account of the principal of and
premium, if any, and (subject to Section 2.6) interest on such Security and for
all other purposes; and neither the Company nor the Trustee nor any
Authenticating Agent nor any paying agent nor any transfer agent nor any
Security registrar shall be affected by any notice to the contrary.  All such
payments so made to any holder for the time being or upon his order shall be
valid, and, to the extent of the sum or sums so paid, effectual to satisfy and
discharge the liability for moneys payable upon any such Security.

     SECTION 7.4.  Securities Owned by Company Deemed Not Outstanding.

     In determining whether the holders of the requisite aggregate principal
amount of Securities have concurred in any direction, consent or waiver under
this Indenture, Securities which are owned by the Company or any other obligor
on the Securities or by any Person directly or indirectly controlling or
controlled by or under direct or indirect common control with the Company,
except Securities held by BFC Capital Trust, or any other obligor on the
Securities shall be disregarded and deemed not to be outstanding for the purpose
of any such determination; provided that for the purposes of determining whether
the Trustee shall be protected in relying on any such direction, consent or
waiver, only Securities which the Trustee actually knows are so owned shall be
so disregarded.  Securities so owned which have been pledged in good faith may
be regarded as outstanding for the purposes of this Section 7.4 if the pledgee
shall establish to the satisfaction of the Trustee the pledgee's right to vote
such Securities and that the pledgee is not the Company or any such other
obligor or Person directly or indirectly controlling or controlled by or under
direct or indirect common control with the Company or any such other obligor.
In the case of a dispute as to such right, any decision by the Trustee taken
upon the advice of counsel shall be full protection to the Trustee.

     SECTION 7.5.  Revocation of Consents; Future Holders Bound.

     At any time prior to (but not after) the evidencing to the Trustee, as
provided in Section 7.1, of the taking of any action by the holders of the
percentage in aggregate principal amount of the Securities in connection with
such action, any holder of a Security (or any Security issued in whole or in
part in exchange or substitution therefor) the serial number of which is shown
by the evidence to be included in the Securities the holders of which have
consented to such action may, by filing written notice with the Trustee at its
principal office and upon proof of holding as provided in Section 7.2, revoke
such action so far as concerns such Security (or so far as concerns the
principal amount represented by any exchanged or substituted Security).  Except
as aforesaid any such action taken by the holder of any Security shall be
conclusive and binding upon such holder and upon all future holders and owners
of such Security, and of any Security issued in exchange or substitution
therefor, irrespective of whether or not any notation in regard thereto is made
upon such Security or any Security issued in exchange or substitution therefor.

                                       29
<PAGE>
 
                                  ARTICLE VII.

                           SECURITYHOLDERS' MEETINGS

     SECTION 8.1  Purpose of Meetings.

     A meeting of Securityholders may be called at any time and from time to
time pursuant to the provisions of this Article VIII for any of the following
purposes:

     (a) to give any notice to the Company or to the Trustee, or to give any
directions to the Trustee, or to consent to the waiving of any Default hereunder
and its consequences, or to take any other action authorized to be taken by
Securityholders pursuant to any of the provisions of Article V;

     (b) to remove the Trustee and nominate a successor trustee pursuant to the
provisions of Article VI;

     (c) to consent to the execution of an indenture or indentures supplemental
hereto pursuant to the provisions of Section 9.2; or

     (d) to take any other action authorized to be taken by or on behalf of the
holders of any specified aggregate principal amount of such Securities under any
other provision of this Indenture or under applicable law.


     SECTION 8.2  Call of Meetings by Trustee.

     The Trustee may at any time call a meeting of Securityholders to take any
action specified in Section 8.1, to be held at such time and at such place in
the Borough of Manhattan, The City of New York, as the Trustee shall determine.
Notice of every meeting of the Securityholders, setting forth the time and the
place of such meeting and in general terms the action proposed to be taken at
such meeting, shall be mailed to holders of Securities at their addresses as
they shall appear on the Security Register.  Such notice shall be mailed not
less than 20 nor more than 180 days prior to the date fixed for the meeting.

     SECTION 8.3  Call of Meetings by Company or Securityholders.

     In case at any time the Company pursuant to a resolution of the Board of
Directors, or the holders of at least 10% in aggregate principal amount of the
Securities then outstanding, shall have requested the Trustee to call a meeting
of Securityholders, by written request setting forth in reasonable detail the
action proposed to be taken at the meeting, and the Trustee shall not have
mailed the notice of such meeting within 20 days after receipt of such request,
then the Company or such Securityholders may determine the time and the place in
the Borough of Manhattan, The City of New York, for such meeting and may call
such meeting to take any action authorized in Section 8.1, by mailing notice
thereof as provided in Section 8.2.

     SECTION 8.4  Qualifications for Voting.

     To be entitled to vote at any meeting of Securityholders a Person shall be
(a) a holder of one or more Securities or (b) a Person appointed by an
instrument in writing as proxy by a holder of one or more Securities.  The only
Persons who shall be entitled to be present or to speak at any meeting of
Securityholders shall be the Persons entitled to vote at such meeting and their
counsel and any representatives of the Trustee and its counsel and any
representatives of the Company and its counsel.

     SECTION 8.5  Regulations.

     Notwithstanding any other provisions of this Indenture, the Trustee may
make such reasonable regulations as it may deem advisable for any meeting of
Securityholders, in regard to proof of the holding of Securities and of the

                                       30
<PAGE>
 
appointment of proxies, and in regard to the appointment and duties of
inspectors of votes, the submission and examination of proxies, certificates and
other evidence of the right to vote, and such other matters concerning the
conduct of the meeting as it shall think fit.

     The Trustee shall, by an instrument in writing, appoint a temporary
chairman of the meeting, unless the meeting shall have been called by the
Company or by Securityholders as provided in Section 8.3, in which case the
Company or the Securityholders calling the meeting, as the case may be, shall in
like manner appoint a temporary chairman.  A permanent chairman and a permanent
secretary of the meeting shall be elected by majority vote of the meeting.

     Subject to the provisions of Section 8.4, at any meeting each holder of
Securities or proxy therefor shall be entitled to one vote for each $1,000
principal amount of Securities held or represented by him; provided, however,
                                                           --------  ------- 
that no vote shall be cast or counted at any meeting in respect of any Security
challenged as not outstanding and ruled by the chairman of the meeting to be not
outstanding.  The chairman of the meeting shall have no right to vote other than
by virtue of Securities held by him or instruments in writing as aforesaid duly
designating him as the person to vote on behalf of other Securityholders.  Any
meeting of Securityholders duly called pursuant to the provisions of Section 8.2
or 8.3 may be adjourned from time to time by a majority of those present,
whether or not constituting a quorum, and the meeting may be held as so
adjourned without further notice.

     SECTION 8.6  Voting.

     The vote upon any resolution submitted to any meeting of holders of
Securities shall be by written ballots on which shall be subscribed the
signatures of such holders or of their representatives by proxy and the serial
number or numbers of the Securities held or represented by them.  The permanent
chairman of the meeting shall appoint two inspectors of votes who shall count
all votes cast at the meeting for or against any resolution and who shall make
and file with the secretary of the meeting their verified written reports in
triplicate of all votes cast at the meeting.  A record in duplicate of the
proceedings of each meeting of Securityholders shall be prepared by the
secretary of the meeting and there shall be attached to said record the original
reports of the inspectors of votes on any vote by ballot taken thereat and
affidavits by one or more persons having knowledge of the facts setting forth a
copy of the notice of the meeting and showing that said notice was mailed as
provided in Section 8.2.  The record shall show the serial numbers of the
Securities voting in favor of or against any resolution.  The record shall be
signed and verified by the affidavits of the permanent chairman and secretary of
the meeting and one of the duplicates shall be delivered to the Company and the
other to the Trustee to be preserved by the Trustee, the latter to have attached
thereto the ballots voted at the meeting.  The holders of the Securities shall
vote for all purposes as a single class.

     Any record so signed and verified shall be conclusive evidence of the
matters therein stated.

                                  ARTICLE IX.

                                  AMENDMENTS

     SECTION 9.1  Without Consent of Securityholders.

     The Company and the Trustee may from time to time and at any time amend
this Indenture, without the consent of the Securityholders, for one or more of
the following purposes:

     (a) to evidence the succession of another Person to the Company, or
successive successions, and the assumption by the successor Person of the
covenants, agreements and obligations of the Company pursuant to Article X
hereof;

     (b) to add to the covenants of the Company such further covenants,
restrictions or conditions for the protection of the Securityholders as the
Board of Directors and the Trustee shall consider to be for the protection of
the Securityholders, and to make the occurrence, or the occurrence and
continuance, of a Default in any of such additional covenants, restrictions or
conditions a default or an Event of Default permitting the enforcement of all or
any of the 

                                       31
<PAGE>
 
remedies provided in this Indenture as herein set forth; provided, however, that
                                                         --------  -------
in respect of any such additional covenant, restriction or condition such
amendment may provide for a particular period of grace after default (which
period may be shorter or longer than that allowed in the case of other defaults)
or may provide for an immediate enforcement upon such default or may limit the
remedies available to the Trustee upon such default;

     (c) to provide for the issuance under this Indenture of Securities in
coupon form (including Securities registrable as to principal only) and to
provide for exchangeability of such Securities with the Securities issued
hereunder in fully registered form and to make all appropriate changes for such
purpose;

     (d) to cure any ambiguity or to correct or supplement any provision
contained herein or in any supplemental indenture which may be defective or
inconsistent with any other provision contained herein or in any supplemental
indenture, or to make such other provisions in regard to matters or questions
arising under this Indenture; provided that any such action shall not materially
adversely affect the interests of the holders of the Securities;

     (e) to evidence and provide for the acceptance of appointment hereunder by
a successor trustee with respect to the Securities;

     (f) to make provision for transfer procedures, certification, book-entry
provisions, the form of restricted securities legends, if any, to be placed on
Securities, and all other matters required pursuant to Section 2.7 or otherwise
necessary, desirable or appropriate in connection with the issuance of
Securities to holders of Capital Securities in the event of a distribution of
Securities by BFC Capital Trust following a Dissolution Event;

     (g) to qualify or maintain qualification of this Indenture under the Trust
Indenture Act; or

     (h) to make any change that does not adversely affect the rights of any
Securityholder in any material respect.

     The Trustee is hereby authorized to join with the Company in the execution
of any supplemental indenture to effect such amendment, to make any further
appropriate agreements and stipulations which may be therein contained and to
accept the conveyance, transfer and assignment of any property thereunder, but
the Trustee shall not be obligated to, but may in its discretion, enter into any
such supplemental indenture which affects the Trustee's own rights, duties or
immunities under this Indenture or otherwise.

     Any amendment to this Indenture authorized by the provisions of this
Section 9.1 may be executed by the Company and the Trustee without the consent
of the holders of any of the Securities at the time outstanding, notwithstanding
any of the provisions of Section 9.2.

     SECTION 9.2  With Consent of Securityholders.

     With the consent (evidenced as provided in Section 7.1) of the holders of a
majority in aggregate principal amount of the Securities at the time
outstanding, the Company, when authorized by a Board Resolution, and the Trustee
may from time to time and at any time amend this Indenture for the purpose of
adding any provisions to or changing in any manner or eliminating any of the
provisions of this Indenture or of modifying in any manner the rights of the
holders of the Securities; provided, however, that no such amendment shall
                           --------  -------                              
without the consent of the holders of each Security then outstanding and
affected thereby (i) change the Maturity Date of any Security, or reduce the
rate or extend the time of payment of interest thereon (except as contemplated
by Article XVI), or reduce the principal amount thereof, or change any of the
redemption provisions, or make the principal thereof or any interest or premium
thereon payable in any coin or currency other than that provided in the
Securities, or impair or affect the right of any Securityholder to institute
suit for payment thereof, or (ii) reduce the aforesaid percentage of Securities
the holders of which are required to consent to any such amendment to this
Indenture, provided, however, that if the Securities are held by BFC Capital
           --------  -------                                                
Trust, such amendment shall not be effective until the holders of a majority in
liquidation amount of Trust Securities shall have consented to such amendment;
                                                                              
provided, further, that if the consent of the holder of each outstanding
- --------  -------                                                       
Security is 

                                       32
<PAGE>
 
required, such amendment shall not be effective until each holder of the Trust
Securities shall have consented to such amendment.

     Upon the request of the Company accompanied by a Board Resolution
authorizing the execution of any supplemental indenture affecting such
amendment, and upon the filing with the Trustee of evidence of the consent of
Securityholders as aforesaid, the Trustee shall join with the Company in the
execution of such supplemental indenture unless such supplemental indenture
affects the Trustee's own rights, duties or immunities under this Indenture or
otherwise, in which case the Trustee may in its discretion, but shall not be
obligated to, enter into such supplemental indenture.

     Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of this Section, the Trustee
shall transmit by mail, first class postage prepaid, a notice, prepared by the
Company, setting forth in general terms the substance of such supplemental
indenture, to the Securityholders as their names and addresses appear upon the
Security Register.  Any failure of the Trustee to mail such notice, or any
defect therein, shall not, however, in any way impair or affect the validity of
any such supplemental indenture.

     It shall not be necessary for the consent of the Securityholders under this
Section 9.2 to approve the particular form of any proposed supplemental
indenture, but it shall be sufficient if such consent shall approve the
substance thereof.

     SECTION 9.3  Compliance with Trust Indenture Act; Effect of Supplemental
Indentures.

     Any supplemental indenture executed pursuant to the provisions of this
Article IX shall comply with the Trust Indenture Act.  Upon the execution of any
supplemental indenture pursuant to the provisions of this Article IX, this
Indenture shall be and be deemed to be modified and amended in accordance
therewith and the respective rights, limitations of rights, obligations, duties
and immunities under this Indenture of the Trustee, the Company and the holders
of Securities shall thereafter be determined, exercised and enforced hereunder
subject in all respects to such modifications and amendments and all the terms
and conditions of any such supplemental indenture shall be and be deemed to be
part of the terms and conditions of this Indenture for any and all purposes.

     SECTION 9.4  Notation on Securities.

     Securities authenticated and delivered after the execution of any
supplemental indenture affecting such series pursuant to the provisions of this
Article IX may bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental indenture.  If the Company or the Trustee
shall so determine, new Securities so modified as to conform, in the opinion of
the Trustee and the Board of Directors, to any modification of this Indenture
contained in any such supplemental indenture may be prepared and executed by the
Company, authenticated by the Trustee or the Authenticating Agent and delivered
in exchange for the Securities then outstanding.

     SECTION 9.5  Evidence of Compliance of Supplemental Indenture to be
Furnished Trustee.

     The Trustee, subject to the provisions of Sections 6.1 and 6.2, may receive
an Officers' Certificate and an Opinion of Counsel as conclusive evidence that
any supplemental indenture executed pursuant hereto complies with the
requirements of this Article IX.

                                       33
<PAGE>
 
                                  ARTICLE X.

               CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE

     SECTION 10.1.  Company May Consolidate, etc., on Certain Terms.

     Nothing contained in this Indenture or in any of the Securities shall
prevent any consolidation or merger of the Company with or into any other Person
(whether or not affiliated with the Company, as the case may be), or successive
consolidations or mergers in which the Company, as the case may be, or its
successor or successors shall be a party or parties, or shall prevent any sale,
conveyance, transfer or lease of the property and assets as an entirety or
substantially as an entirety to any Person if the securities issued in exchange
for the Securities in such transaction shall in all respects have the same legal
rank and benefit under this Indenture as the Securities theretofore or
thereafter issued in accordance with the terms of this Indenture as though all
of such Securities had been issued at the date of the execution hereof;
provided, however, that the Company shall not consolidate with or merge into any
- --------  -------                                                               
other Person or sell, convey, transfer or lease its properties and assets as an
entirety or substantially as an entirety to any Person, and no Person shall
consolidate with or merge into the Company or sell, convey, transfer or lease
its properties and assets as an entirety or substantially as an entirety to the
Company, unless (i) in case the Company consolidates with or merges into another
Person or sells, conveys or transfers its properties and assets as an entirety
or substantially as an entirety to any Person, the successor Person is organized
under the laws of the United States or any State or the District of Columbia,
and such successor Person expressly assumes the Company's obligations on the
Securities and (ii) immediately after giving effect thereto, no Default or Event
of Default shall have occurred and be continuing.

     SECTION 10.2.  Successor Corporation to be Substituted for Company.

     In case of any such consolidation, merger, conveyance or transfer and upon
the assumption by the successor Person, by supplemental indenture, executed and
delivered to the Trustee and satisfactory in form to the Trustee, of the due and
punctual payment of the principal of and premium, if any, and interest on all of
the Securities and the due and punctual performance and observance of all of the
covenants and conditions of this Indenture to be performed or observed by the
Company, such successor Person shall succeed to and be substituted for the
Company, with the same effect as if it had been named herein as a party hereto,
and the Company thereupon shall be relieved of any further liability or
obligation hereunder or upon the Securities. Such successor Person thereupon may
cause to be signed, and may issue either in its own name or in the name of the
Company, any or all of the Securities issuable hereunder which theretofore shall
not have been signed by the Company and delivered to the Trustee or the
Authenticating Agent; and, upon the order of such successor Person instead of
the Company and subject to all the terms, conditions and limitation in this
Indenture prescribed, the Trustee or the Authenticating Agent shall authenticate
and deliver any Securities which previously shall have been signed and delivered
by the Officers of the Company to the Trustee or the Authenticating Agent for
authentication, and any Securities which such successor Person thereafter shall
cause to be signed and delivered to the Trustee or the Authenticating Agent for
that purpose.  All of the Securities so issued shall in all respects have the
same legal rank and benefit under this Indenture as the Securities theretofore
or thereafter issued in accordance with the terms of this Indenture as though
all of such Securities had been issued at the date of the execution hereof.

     SECTION 10.3. Opinion of Counsel to be Given Trustee.

     The Trustee, subject to the provisions of Sections 6.1 and 6.2, may receive
an Opinion of Counsel as conclusive evidence that any consolidation, merger,
sale, conveyance, transfer or lease, and any assumption, permitted or required
by the terms of this Article X complies with the provisions of this Article X.

                                       34
<PAGE>
 
                                  ARTICLE XI.

                    SATISFACTION AND DISCHARGE OF INDENTURE

     SECTION 11.1.  Discharge of Indenture.

     When (a) the Company shall deliver to the Trustee for cancellation all
Securities theretofore authenticated (other than any Securities which shall have
been destroyed, lost or stolen and which shall have been replaced or paid as
provided in Section 2.8) and not theretofore canceled, or (b) all the Securities
not theretofore canceled or delivered to the Trustee for cancellation shall have
become due and payable, or are by their terms to become due and payable within
one year or are to be called for redemption within one year under arrangements
satisfactory to the Trustee for the giving of notice of redemption, and the
Company shall deposit with the Trustee, in trust, funds sufficient to pay on the
Maturity Date or upon redemption all of the Securities (other than any
Securities which shall have been destroyed, lost or stolen and which shall have
been replaced or paid as provided in Section 2.8) not theretofore canceled or
delivered to the Trustee for cancellation, including principal and premium, if
any, and interest due or to become due to the Maturity Date or redemption date,
as the case may be, but excluding, however, the amount of any moneys for the
payment of principal of or premium, if any, or interest on the Securities (1)
theretofore repaid to the Company in accordance with the provisions of Section
11.4, or (2) paid to any State or to the District of Columbia pursuant to its
unclaimed property or similar laws, and if in either case the Company shall also
pay or cause to be paid all other sums payable hereunder by the Company, then
this Indenture shall cease to be of further effect except for the provisions of
Sections 2.2, 2.7, 2.8, 3.1, 3.2, 3.4, 6.6, 6.10 and 11.4 hereof shall survive
until such Securities shall mature and be paid.  Thereafter, Sections 6.10 and
11.4 shall survive, and the Trustee, on demand of the Company accompanied by any
Officers' Certificate and an Opinion of Counsel and at the cost and expense of
the Company, shall execute proper instruments acknowledging satisfaction of and
discharging this Indenture, the Company, however, hereby agreeing to reimburse
the Trustee for any costs or expenses thereafter reasonably and properly
incurred by the Trustee in connection with this Indenture or the Securities.

     SECTION 11.2. Deposited Moneys and U.S. Government Obligations to be Held
in Trust by Trustee.

     Subject to the provisions of Section 11.4, all moneys and U.S. Government
Obligations deposited with the Trustee pursuant to Sections 11.1 or 11.5 shall
be held in trust and applied by it to the payment, either directly or through
any paying agent (including the Company if acting as its own paying agent), to
the holders of the particular Securities for the payment of which such moneys or
U.S.  Government Obligations have been deposited with the Trustee, of all sums
due and to become due thereon for principal, premium, if any, and interest.

     The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the U.S. Government Obligations
deposited pursuant to Section 11.5 or the principal and interest received in
respect thereof other than any such tax, fee or other charge which by law is for
the account of the holders of outstanding Securities.

     SECTION 11.3.  Paying Agent to Repay Moneys Held.

     Upon the satisfaction and discharge of this Indenture all moneys then held
by any paying agent of the Securities (other than the Trustee) shall, upon
written demand of the Company, be repaid to it or paid to the Trustee, and
thereupon such paying agent shall be released from all further liability with
respect to such moneys.

     SECTION 11.4.  Return of Unclaimed Moneys.

     Any moneys deposited with or paid to the Trustee or any paying agent for
payment of the principal of or premium, if any, or interest on Securities and
not applied but remaining unclaimed by the holders of Securities for two years
after the date upon which the principal of or premium, if any, or interest on
such Securities, as the case may be, shall have become due and payable, shall be
repaid to the Company by the Trustee or such paying agent on written demand; and
the holder of any of the Securities shall thereafter look only to the Company
for any payment which such 

                                       35
<PAGE>
 
holder may be entitled to collect and all liability of the Trustee or such
paying agent with respect to such moneys shall thereupon cease.

     SECTION 11.5.  Defeasance Upon Deposit of Moneys or U.S. Government
Obligations.

     The Company shall be deemed to have been Discharged (as defined below) from
its obligations with respect to the Securities on the 91st day after the
applicable conditions set forth below have been satisfied:

     (a) the Company shall have deposited or caused to be deposited irrevocably
with the Trustee or the Defeasance Agent (as defined below) as trust funds in
trust, specifically pledged as security for, and dedicated solely to, the
benefit of the holders of the Securities (i) money in an amount, or (ii) U.S.
Government Obligations which through the payment of interest and principal in
respect thereof in accordance with their terms will provide, not later than one
day before the due date of any payment, money in an amount, or (iii) a
combination of (i) and (ii), sufficient, in the opinion (with respect to (ii)
and (iii)) of a nationally recognized firm of independent public accountants
expressed in a written certification thereof delivered to the Trustee and the
Defeasance Agent, if any, to pay and discharge each installment of principal of
and interest and premium, if any, on the outstanding Securities on the dates
such installments of principal, interest or premium are due;

     (b) if the Securities are then listed on any national securities exchange,
the Company shall have delivered to the Trustee and the Defeasance Agent, if
any, an Opinion of Counsel to the effect that the exercise of the option under
this Section 11.5 would not cause such Securities to be delisted from such
exchange;

     (c) no Default or Event of Default with respect to the Securities shall
have occurred and be continuing on the date of such deposit; and

     (d) the Company shall have delivered to the Trustee and the Defeasance
Agent, if any, an Opinion of Counsel to the effect that holders of the
Securities will not recognize income, gain or loss for United States federal
income tax purposes as a result of the exercise of the option under this Section
11.5 and will be subject to United States federal income tax on the same amount
and in the same manner and at the same times as would have been the case if such
option had not been exercised, and such opinion shall be accompanied by a
private letter ruling to that effect received from the United States Internal
Revenue Service or a revenue ruling pertaining to a comparable form of
transaction to that effect published by the United States Internal Revenue
Service.

     "Discharged" shall mean that the Company shall be deemed to have paid and
discharged the entire indebtedness represented by, and obligations under, the
Securities and to have satisfied all the obligations under this Indenture
relating to the Securities (and the Trustee, at the expense of the Company,
shall execute proper instruments acknowledging the same), except (A) the rights
of holders of Securities to receive, from the trust fund described in clause (1)
above, payment of the principal of and the interest and premium, if any, on the
Securities when such payments are due; (B) the Company's obligations with
respect to the Securities under Sections 2.7, 2.8, 5.2 and 11.4; and (C) the
rights, powers, trusts, duties and immunities of the Trustee hereunder.

     "Defeasance Agent" shall mean another financial institution which is
eligible to act as Trustee hereunder and which assumes all of the obligations of
the Trustee necessary to enable the Trustee to act hereunder.  In the event such
a Defeasance Agent is appointed pursuant to this Section, the following
conditions shall apply:

     (1) The Trustee shall have approval rights over the document appointing
         such Defeasance Agent and the document setting forth such Defeasance
         Agent's rights and responsibilities;

     (2) The Defeasance Agent shall provide verification to the Trustee
         acknowledging receipt of sufficient money and/or U.S. Government
         Obligations to meet the applicable conditions set forth in this Section
         11.5.

                                       36
<PAGE>
 
     SECTION 11.6.  Reinstatement.

     If the Trustee or any Defeasance Agent is unable to apply any money in
accordance with Section 11.5 by reason of any legal proceeding or by reason of
any order or judgement of any court or governmental authority enjoining,
restraining or otherwise prohibiting such application, the Company's obligations
under this Indenture and the Securities shall be revived and reinstated as
though no deposit had occurred pursuant to 11.5 until such time as the Trustee
or any Defeasance Agent is permitted to apply all such money in accordance with
Section 11.5.

                                  ARTICLE XII

                   IMMUNITY OF INCORPORATORS, STOCKHOLDERS,
                            OFFICERS AND DIRECTORS

     SECTION 12.1.  Indenture and Securities Solely Corporate Obligations.

     No recourse for the payment of the principal of or premium, if any, or
interest on any Security, or for any claim based thereon or otherwise in respect
thereof, and no recourse under or upon any obligation, covenant or agreement of
the Company in this Indenture, or in any Security, or because of the creation of
any indebtedness represented thereby, shall be had against any incorporator,
stockholder, officer or director, as such, past, present or future, of the
Company or of any successor Person to the Company, either directly or through
the Company, under any constitution, statute or rule of law, or by the
enforcement of any assessment or penalty or otherwise; it being expressly
understood that all such liability is hereby expressly waived and released as a
condition of, and as a consideration for, the execution of this Indenture and
the issue of the Securities.

                                  ARTICLE XII

                           MISCELLANEOUS PROVISIONS

     SECTION 13.1.  Successors.

     All the covenants, stipulations, promises and agreements in this Indenture
contained by the Company shall bind its successors and assigns whether so
expressed or not.

     SECTION 13.2.  Official Acts by Successor Corporation.

     Any act or proceeding by any provision of this Indenture authorized or
required to be done or performed by any board, committee or officer of the
Company shall and may be done and performed with like force and effect by the
like board, committee or officer of any corporation that shall at the time be
the lawful sole successor of the Company.

     SECTION 13.3.  Surrender of Company Powers.

     The Company by instrument in writing executed by authority of 2/3 (two-
thirds) of its Board of Directors and delivered to the Trustee may surrender any
of the powers reserved to the Company, and thereupon such power so surrendered
shall terminate both as to the Company, as the case may be, and as to any
successor Person.

     SECTION 13.4.  Address for Notices, etc.

     Any notice or demand which by any provision of this Indenture is required
or permitted to be given or served by the Trustee or by the holders of
Securities on the Company may be given or served by being deposited postage
prepaid by registered or certified mail in a post office letter box addressed
(until another address is filed by the Company with the Trustee for the purpose)
to the Company, 101 North Broadway, Oklahoma City, Oklahoma 73102, Attention:
General Counsel.  Any notice, direction, request or demand by any Securityholder
to or upon the Trustee shall be deemed to have 

                                       37
<PAGE>
 
been sufficiently given or made, for all purposes, if given or made in writing
at the office of the Trustee, addressed to the Trustee, 101 Barclay Street,
Floor 21 West, New York, New York 10286, Attention: Corporate Trust
Administration.

     SECTION 13.5.  Governing Law.

     THIS INDENTURE AND EACH SECURITY SHALL BE DEEMED TO BE A CONTRACT MADE
UNDER THE LAWS OF THE STATE OF NEW YORK, AND FOR ALL PURPOSES SHALL BE GOVERNED
BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT
REGARD TO CONFLICT OF LAW PRINCIPLES.

     SECTION 13.6.  Evidence of Compliance with Conditions Precedent.

     Upon any application or demand by the Company to the Trustee to take any
action under any of the provisions of this Indenture, the Company shall furnish
to the Trustee an Officers' Certificate stating that in the opinion of the
signers all conditions precedent, if any, provided for in this Indenture
relating to the proposed action have been complied with and an Opinion of
Counsel stating that, in the opinion of such counsel, all such conditions
precedent have been complied with.

     Each certificate or opinion provided for in this Indenture and delivered to
the Trustee with respect to compliance with a condition or covenant provided for
in this Indenture shall include (1) a statement that the person making such
certificate or opinion has read such covenant or condition; (2) a brief
statement as to the nature and scope of the examination or investigation upon
which the statements or opinions contained in such certificate or opinion are
based; (3) a statement that, in the opinion of such person, he has made such
examination or investigation as is necessary to enable him to express an
informed opinion as to whether or not such covenant or condition has been
complied with; and (4) a statement as to whether or not, in the opinion of such
person, such condition or covenant has been complied with.

     SECTION 13.7.  Payments on Business Days Only.

     In any case where the payment of principal and/or premium, if any, and/or
interest on the Securities is due on a date that is not a Business Day, then the
payment of principal, premium and/or interest payable on such date will be made
on the next succeeding Business Day (and without any interest or other payment
in respect of any such delay), with the same force and effect as if made on such
date.

     SECTION 13.8.  Trust Indenture Act to Control.

     If and to the extent that any provision of this Indenture limits, qualifies
or conflicts with another provision included in this Indenture which is required
to be included in this Indenture by any of Sections 310 to 317, inclusive, of
the Trust Indenture Act of 1939, such required provision shall control.

     SECTION 13.9.  Table of Contents, Headings, etc.

     The table of contents and the titles and headings of the articles and
sections of this Indenture have been inserted for convenience of reference only,
are not to be considered a part hereof, and shall in no way modify or restrict
any of the terms or provisions hereof.

     SECTION 13.10. Execution in Counterparts

     This Indenture may be executed in any number of counterparts, each of which
shall be an original, but such counterparts shall together constitute but one
and the same instrument.

                                       38
<PAGE>
 
     SECTION 13.11. Separability.

     In case any one or more of the provisions contained in this Indenture or in
the Securities shall for any reason be held to be invalid, illegal or
unenforceable in any respect, such invalidity, illegality or unenforceability
shall not affect any other provisions of this Indenture or of the Securities,
but this Indenture and the Securities shall be construed as if such invalid or
illegal or unenforceable provision had never been contained herein or therein.

     SECTION 13.12. Assignment.

     The Company will have the right at all times to assign any of its
respective rights or obligations under this Indenture to a direct or indirect
wholly owned Subsidiary of the Company, provided that, in the event of any such
assignment, the Company, as the case may be, will remain liable for all such
obligations.  Subject to the foregoing, the Indenture is binding upon and inures
to the benefit of the parties thereto and their respective successors and
assigns.  This Indenture may not otherwise be assigned by the parties hereto.

     SECTION 13.13. Acknowledgment of Rights.

     The Company acknowledges that, with respect to any Securities held by BFC
Capital Trust or a trustee of such trust, if the Property Trustee of such trust
fails to enforce its rights under this Indenture as the holder of the Securities
held as the assets of BFC Capital Trust any holder of Capital Securities may
institute legal proceedings directly against the Company in the form of a Direct
Action in order to enforce such Property Trustee's rights under this Indenture
without first instituting any legal proceedings against such Property Trustee or
any other person or entity.  Notwithstanding the foregoing, if an Event of
Default has occurred and is continuing and such event is attributable to the
failure of the Company to pay principal of or premium, if any, or interest on
the Securities when due, the Company acknowledges that a holder of Capital
Securities may institute a Direct Action directly against the Company for
enforcement of payment to such holder of the principal of or premium, if any, or
interest on the Securities having a principal amount equal to the aggregate
liquidation amount of the Capital Securities of such holder on or after the
respective due date specified in the Securities.

                                  ARTICLE XIV

                   REDEMPTION OF SECURITIES; NO SINKING FUND

     SECTION 14.1.  Special Event Redemption.

     Subject to the provisions of this Article XIV, if a Special Event has
occurred and is continuing prior to January 15, 2007, the Company shall have the
right, upon (i) not less than 45 days written notice to the Trustee and (ii) not
less than 30 days nor more than 60 days written notice to the Securityholders,
to redeem the Securities, in whole (but not in part), within 90 days following
the occurrence of such Special Event at the Special Event Redemption Price.
Following a Special Event, the Company shall take such action as is necessary to
promptly determine the Special Event Redemption Price, including without
limitation the appointment by the Company of a Quotation Agent.  The Special
Event Redemption Price shall be paid by the Trustee prior to 12:00 noon, New
York City time, on the date of such redemption or such earlier time as the
Company determines, provided that the Company shall deposit with the Trustee an
amount sufficient to pay the Special Event Redemption Price by 10:00 a.m., New
York City time, on the date such Special Event Redemption Price is to be paid.

     SECTION 14.2.  Optional Redemption by Company.

     (a)  Subject to the provisions of this Article XIV, the Company shall have
the right to redeem the Securities, in whole or in part, from time to time, on
or after January 15, 2007, at the optional redemption prices set forth below
(expressed as a percentage of the outstanding principal amount to be redeemed )
plus, in either case, accrued and unpaid interest thereon (including Additional
Interest and Compounded Interest, if any) to the applicable date of 

                                       39
<PAGE>
 
redemption (the "Optional Redemption Price") if redeemed during the 12-month
period beginning January 15 of the years indicated below.

<TABLE>
<CAPTION>
               YEAR                   PERCENTAGE
               ----                   ----------
               <S>                    <C>
               2007.................. 104.825%
               2008.................. 104.343%
               2009.................. 103.860%
               2010.................. 103.378%
               2011.................. 102.895%
               2012.................. 102.413%
               2013.................. 101.930%
               2014.................. 101.448%
               2015.................. 100.965%
               2016.................. 100.483%
               2017 and thereafter... 100.000%
</TABLE>

     If the Securities are only partially redeemed pursuant to this Section
14.2, the Securities will be redeemed pro rata or by lot or by any other method
                                      --- ----                                 
utilized by the Trustee; provided, that if at the time of redemption the
                         --------                                       
Securities are registered as a Global Security, the Depositary shall determine,
in accordance with its procedures, the principal amount of such Securities held
by each participant (and, indirectly, beneficial owner) of a Security to be
redeemed.  The Optional Redemption Price shall be paid prior to 12:00 noon, New
York City time, on the date of such redemption or at such earlier time as the
Company determines, provided that the Company shall deposit with the Trustee an
amount sufficient to pay the Optional Redemption Price by 10:00 a.m., New York
time, on the date such Optional Redemption Price is to be paid.

     (b)  Notwithstanding the first sentence of Section 14.2, upon the entry of
an order for dissolution of BFC Capital Trust by a court of competent
jurisdiction, the Securities thereafter will be subject to optional redemption,
in whole only, but not in part, on or after January 15, 2007, at the optional
redemption prices set forth in Section 14.2(a) and otherwise in accordance with
this Article XIV.

     (c)  Any redemption of Securities pursuant to Section 14.1 or Section 14.2
shall be subject to the Company obtaining the prior approval of the Federal
Reserve, if such approval is then required under applicable capital guidelines
or policies of the Federal Reserve.

     SECTION 14.3.  No Sinking Fund.

     The Securities are not entitled to the benefit of any sinking fund.

     SECTION 14.4. Notice of Redemption; Selection of Securities.

     In case the Company shall desire to exercise the right to redeem all, or,
as the case may be, any part of the Securities in accordance with their terms,
it shall fix a date for redemption and shall mail a notice of such redemption at
least 30 and not more than 60 days prior to the date fixed for redemption to the
holders of Securities so to be redeemed as a whole or in part at their last
addresses as the same appear on the Security Register.  Such mailing shall be by
first class mail.  The notice if mailed in the manner herein provided shall be
conclusively presumed to have been duly given, whether or not the holder
receives such notice.  In any case, failure to give such notice by mail or any
defect in the notice to the holder of any Security designated for redemption as
a whole or in part shall not affect the validity of the proceedings for the
redemption of any other Security.

     Each such notice of redemption shall specify the CUSIP number, if any, of
the Securities to be redeemed, the date fixed for redemption, the redemption
price at which the Securities are to be redeemed (or the method by which such
redemption price is to be calculated), the place or places of payment that
payment will be made upon presentation and surrender of the Securities, that
interest accrued to the date fixed for redemption will be paid as specified in
said notice, 

                                       40
<PAGE>
 
and that on and after said date interest thereon or on the portions thereof to
be redeemed will cease to accrue. If less than all the Securities are to be
redeemed the notice of redemption shall specify the numbers of the Securities to
be redeemed. In case any Security is to be redeemed in part only, the notice of
redemption shall state the portion of the principal amount thereof to be
redeemed and shall state that on and after the date fixed for redemption, upon
surrender of such Security, a new Security or Securities in principal amount
equal to the unredeemed portion thereof will be issued.

     On or prior to the redemption date specified in the notice of redemption
given as provided in this Section, the Company will deposit with the Trustee or
with one or more paying agents an amount of money sufficient to redeem on the
redemption date all the Securities so called for redemption at the appropriate
Redemption Price, together with accrued interest to the date fixed for
redemption.

     The Company will give the Trustee notice not less than 45 days prior to the
redemption date as to the aggregate principal amount of Securities to be
redeemed and the Trustee shall select, in such manner as in its sole discretion
it shall deem appropriate and fair, the Securities or portions thereof (in
integral multiples of $1,000, except as otherwise set forth in the applicable
form of Security) to be redeemed.

     SECTION 14.5. Payment of Securities Called for Redemption.

     If notice of redemption has been given as provided in Section 14.4, the
Securities or portions of Securities with respect to which such notice has been
given shall become due and payable on the date and at the place or places stated
in such notice at the applicable Redemption Price, together with interest
accrued to the date fixed for redemption (subject to the rights of holders of
Securities on the close of business on a regular record date in respect of an
Interest Payment Date occurring on or prior to the redemption date), and on and
after said date (unless the Company shall default in the payment of such
Securities at the Redemption Price, together with interest accrued to said date)
interest on the Securities or portions of Securities so called for redemption
shall cease to accrue.  On presentation and surrender of such Securities at a
place of payment specified in said notice, the said Securities or the specified
portions thereof shall be paid and redeemed by the Company at the applicable
Redemption Price, together with interest accrued thereon to the date fixed for
redemption (subject to the rights of holders of Securities on the close of
business on a regular record date in respect of an Interest Payment Date
occurring on or prior to the redemption date).

     Upon presentation of any Security redeemed in part only, the Company shall
execute and the Trustee shall authenticate and make available for delivery to
the holder thereof, at the expense of the Company, a new Security or Securities
of authorized denominations, in principal amount equal to the unredeemed portion
of the Security so presented.

                                  ARTICLE XV.

                          SUBORDINATION OF SECURITIES

     SECTION 15.1.  Agreement to Subordinate.

     The Company covenants and agrees, and each holder of Securities issued
hereunder likewise covenants and agrees, that the Securities shall be issued
subject to the provisions of this Article XV; and each holder of a Security,
whether upon original issue or upon transfer or assignment thereof, accepts and
agrees to be bound by such provisions.

     The payment by the Company of the principal of and premium, if any, and
interest on all Securities issued hereunder shall, to the extent and in the
manner hereinafter set forth, be subordinated and junior in right of payment to
the prior payment in full of all Senior Indebtedness, whether outstanding at the
date of this Indenture or thereafter incurred.

     No provision of this Article XV shall prevent the occurrence of any Default
or Event of Default hereunder.

                                       41
<PAGE>
 
     SECTION 15.2.  Default on Senior Indebtedness.

     In the event and during the continuation of any default by the Company in
the payment of principal, premium, interest or any other payment due on any
Senior Indebtedness, or in the event that the maturity of any Senior
Indebtedness has been accelerated because of a default, then, in either case, no
payment shall be made by the Company with respect to the principal (including
redemption payments) of or premium, if any, or interest on the Securities.

     In the event of the acceleration of the maturity of the Securities, then no
payment shall be made by the Company with respect to the principal (including
redemption payments) of or premium, if any, or interest on the Securities until
the holders of all Senior Indebtedness outstanding at the time of such
acceleration shall receive payment in full of all Senior Indebtedness (including
any amounts due upon acceleration).

     In the event that, notwithstanding the foregoing, any payment shall be
received by the Trustee when such payment is prohibited by the preceding
paragraphs of this Section 15.2, such payment shall be held in trust for the
benefit of, and shall be paid over or delivered to, the holders of Senior
Indebtedness or their respective representatives, or to the trustee or trustees
under any indenture pursuant to which any of such Senior Indebtedness may have
been issued, as their respective interests may appear, but only to the extent of
that the holders of the Senior Indebtedness (or their representative or
representatives or a trustee) notify the Trustee in writing, within 90 days of
such payment, of the amounts hen due and owing on such Senior Indebtedness and
only the amounts specified in such notice to the Trustee shall be paid to the
holders of such Senior Indebtedness.

     SECTION 15.3.  Liquidation; Dissolution; Bankruptcy.

     Upon any payment by the Company or distribution of assets of the Company of
any kind or character, whether in cash, property or securities, to creditors
upon any dissolution or winding-up or liquidation or reorganization of the
Company, whether voluntary or involuntary or in bankruptcy, insolvency,
receivership or other proceedings, all Senior Indebtedness of the Company shall
first be paid in full, or payment thereof provided for in money in accordance
with its terms, before any payment is made by the Company on account of the
principal (and premium, if any) or interest on the Securities; and upon any such
dissolution or winding-up or liquidation or reorganization, any payment by the
Company, or distribution of assets of the Company of any kind or character,
whether in cash, property or securities, to which the Securityholders or the
Trustee would be entitled to receive from the Company, except for the provisions
of this Article XV, shall be paid by the Company or by any receiver, trustee in
bankruptcy, liquidating trustee, agent or other Person making such payment or
distribution, or by the Securityholders or by the Trustee under this Indenture
if received by them or it, directly to the holders of Senior Indebtedness of the
Company (pro rata to such holders on the basis of the respective amounts of
Senior Indebtedness held by such holders, as calculated by the Company) or their
representative or representatives, or to the trustee or trustees under any
indenture pursuant to which any instruments evidencing such Senior Indebtedness
may have been issued, as their respective interests may appear, to the extent
necessary to pay all such Senior Indebtedness in full, in money or money's
worth, after giving effect to any concurrent payment or distribution to or for
the holders of such Senior Indebtedness, before any payment or distribution is
made to the Securityholders or to the Trustee.

     In the event that, notwithstanding the foregoing, any payment or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities, prohibited by the foregoing, shall be received by the
Trustee before all Senior Indebtedness is paid in full, or provision is made for
such payment in money in accordance with its terms, such payment or distribution
shall be held in trust for the benefit of and shall be paid over or delivered to
the holders of such Senior Indebtedness or their representative or
representatives, or to the trustee or trustees under any indenture pursuant to
which any instruments evidencing such Senior Indebtedness may have been issued,
and their respective interests may appear, as calculated by the Company, for
application to the payment of all Senior Indebtedness remaining unpaid to the
extent necessary to pay all Senior Indebtedness in full in money in accordance
with its terms, after giving effect to any concurrent payment or distribution to
or for the benefit of the holders of such Senior Indebtedness.

                                       42
<PAGE>
 
     For purposes of this Article XV, the words "cash, property or securities"
shall not be deemed to include shares of stock of the Company as reorganized or
readjusted, or securities of the Company or any other corporation provided for
by a plan of reorganization or readjustment, the payment of which is
subordinated at least to the extent provided in this Article XV with respect to
the Securities to the payment of Senior Indebtedness that may at the time be
outstanding, provided that (i) such Senior Indebtedness is assumed by the new
corporation, if any, resulting from any such reorganization or readjustment, and
(ii) the rights of the holders of such Senior Indebtedness are not, without the
consent of such holders, altered by such reorganization or readjustment.  The
consolidation of the Company with, or the merger of the Company into, another
Person or the liquidation or dissolution of the Company following the sale,
conveyance, transfer or lease of its property as an entirety, or substantially
as an entirety, to another Person upon the terms and conditions provided for in
Article X of this Indenture shall not be deemed a dissolution, winding-up,
liquidation or reorganization for the purposes of this Section 15.3 if such
other Person shall, as a part of such consolidation, merger, sale, conveyance,
transfer or lease, comply with the conditions stated in Article X of this
Indenture.  Nothing in Section 15.2 or in this Section 15.3 shall apply to
claims of, or payments to, the Trustee under or pursuant to Section 6.5 of this
Indenture.

     SECTION 15.4.  Subrogation.

     Subject to the payment in full of all Senior Indebtedness, the rights of
the Securityholders shall be subrogated to the rights of the holders of such
Senior Indebtedness to receive payments or distributions of cash, property or
securities of the Company, as the case may be, applicable to such Senior
Indebtedness until the-principal of (and premium, if any) and interest on the
Securities shall be paid in full; and, for the purposes of such subrogation, no
payments or distributions to the holders of such Senior Indebtedness of any
cash, property or securities to which the Securityholders or the Trustee would
be entitled except for the provisions of this Article XV, and no payment over
pursuant to the provisions of this Article XV to or for the benefit of the
holders of such Senior Indebtedness by Securityholders or the Trustee, shall, as
between the Company, its creditors other than holders of Senior Indebtedness of
the Company, and the holders of the Securities, be deemed to be a payment by the
Company to or on account of such Senior Indebtedness.  It is understood that the
provisions of this Article XV are and are intended solely for the purposes of
defining the relative rights of the holders of the Securities, on the one hand,
and the holders of such Senior Indebtedness on the other hand.

     Nothing contained in this Article XV or elsewhere in this Indenture or in
the Securities is intended to or shall impair, as between the Company, its
creditors other than the holders of Senior Indebtedness of the Company, and the
holders of the Securities, the obligation of the Company, which is absolute and
unconditional, to pay to the holders of the Securities the principal of (and
premium, if any) and interest on the Securities as and when the same shall
become due and payable in accordance with their terms, or is intended to or
shall affect the relative rights of the holders of the Securities and creditors
of the Company, as the case may be, other than the holders of Senior
Indebtedness of the Company, as the case may be, nor shall anything herein or
therein prevent the Trustee or the holder of any Security from exercising all
remedies otherwise permitted by applicable law upon default under this
Indenture, subject to the rights, if any, under this Article XV of the holders
of such Senior Indebtedness in respect of cash, property or securities of the
Company, as the case may be, received upon the exercise of any such remedy.

     Upon any payment or distribution of assets of the Company referred to in
this Article XV, the Trustee, subject to the provisions of Article VI of this
Indenture, and the Securityholders shall be entitled to conclusively rely upon
any order or decree made by any court of competent jurisdiction in which such
dissolution, winding-up, liquidation or reorganization proceedings are pending,
or a certificate of the receiver, trustee in bankruptcy, liquidation trustee,
agent or other Person making such payment or distribution, delivered to the
Trustee or to the Securityholders, for the purposes of ascertaining the Persons
entitled to participate in such distribution, the holders of Senior Indebtedness
and other indebtedness of the Company, as the case may be, the amount thereof or
payable thereon, the amount or amounts paid or distributed thereon and all other
facts pertinent thereto or to this Article XV.

                                       43
<PAGE>
 
     SECTION 15.5.  Trustee to Effectuate Subordination.

     Each Securityholder by such Securityholder's acceptance thereof authorizes
and directs the Trustee on such Securityholder's behalf to take such action as
may be necessary or appropriate to effectuate the subordination provided in this
Article XV and appoints the Trustee such Securityholder's attorney-in-fact for
any and all such purposes.

     SECTION 15.6.  Notice by the Company.

     The Company shall give prompt written notice to a Responsible Officer of
the Trustee of any fact known to the Company that would prohibit the making of
any payment of monies to or by the Trustee in respect of the Securities pursuant
to the provisions of this Article XV.  Notwithstanding the provisions of this
Article XV or any other provision of this Indenture, the Trustee shall not be
charged with knowledge of the existence of any facts that would prohibit the
making of any payment of monies to or by the Trustee in respect of the
Securities pursuant to the provisions of this Article XV, unless and until a
Responsible Officer of the Trustee shall have received written notice thereof
from the Company or a holder or holders of Senior Indebtedness or from any
trustee therefor; and before the receipt of any such written notice, the
Trustee, subject to the provisions of Article VI of this Indenture, shall be
entitled in all respects to assume that no such facts exist; provided, however,
                                                             --------  ------- 
that if the Trustee shall not have received the notice provided for in this
Section 15.6 at least two Business Days prior to the date upon which by the
terms hereof any money may become payable for any purpose (including, without
limitation, the payment of the principal of (or premium, if any) or interest on
any Security), then, anything herein contained to the contrary notwithstanding,
the Trustee shall have full power and authority to receive such money and to
apply the same to the purposes for which they were received, and shall not be
affected by any notice to the contrary that may be received by it within two
Business Days prior to such date.

     The Trustee, subject to the provisions of Article VI of this Indenture,
shall be entitled to conclusively rely on the delivery to it of a written notice
by a Person representing himself to be a holder of Senior Indebtedness of the
Company, as the case may be (or a trustee on behalf of such holder), to
establish that such notice has been given by a holder of such Senior
Indebtedness or a trustee on behalf of any such holder or holders.  In the event
that the Trustee determines in good faith that further evidence is required with
respect to the right of any Person as a holder of such Senior Indebtedness to
participate in any payment or distribution pursuant to this Article XV, the
Trustee may request such Person to furnish evidence to the reasonable
satisfaction of the Trustee as to the amount of such Senior Indebtedness held by
such Person, the extent to which such Person is entitled to participate in such
payment or distribution and any other facts pertinent to the rights of such
Person under this Article XV, and, if such evidence is not furnished, the
Trustee may defer any payment to such Person pending judicial determination as
to the right of such Person to receive such payment.

     Upon any payment or distribution of assets of the Company referred to in
this Article XV, the Trustee and the Securityholders shall be entitled to rely
upon any order or decree entered by any court of competent jurisdiction in which
such insolvency, bankruptcy, receivership, liquidation, reorganization,
dissolution, winding up or similar case or proceeding is pending, or a
certificate of the trustee in bankruptcy, liquidating trustee, custodian,
receiver, assignee for the benefit of creditors, agent or other Person making
such payment or distribution, delivered to the Trustee or to the
Securityholders, for the purpose of ascertaining the Persons entitled to
participate in such payment or distribution, the holders of Senior Indebtedness
and other indebtedness of the Company, the amount thereof or payable thereon,
the amount or amounts paid or distributed thereon and all other facts pertinent
thereto or to this Article XV.

     SECTION 15.7. Rights of the Trustee; Holders of Senior Indebtedness.

     The Trustee in its individual capacity shall be entitled to all the rights
set forth in this Article XV in respect of any Senior Indebtedness at any time
held by it, to the same extent as any other holder of Senior Indebtedness, and
nothing in this Indenture shall deprive the Trustee of any of its rights as such
holder.

     With respect to the holders of Senior Indebtedness of the Company, the
Trustee undertakes to perform or to observe only such of its covenants and
obligations as are specifically set forth in this Article XV, and no implied
covenants or obligations with respect to the holders of such Senior Indebtedness
shall be read into this Indenture against 

                                       44
<PAGE>
 
the Trustee. The Trustee shall not be deemed to owe any fiduciary duty to the
holders of such Senior Indebtedness and, subject to the provisions of Article VI
of this Indenture, the Trustee shall not be liable to any holder of such Senior
Indebtedness if it shall pay over or deliver to Securityholders, the Company or
any other Person money or assets to which any holder of such Senior Indebtedness
shall be entitled by virtue of this Article XV or otherwise.

     Nothing in this Article XV shall apply to claims of, or payments to, the
Trustee under or pursuant to Section 6.6.

     SECTION 15.8.  Subordination May Not Be Impaired.

     No right of any present or future holder of any Senior Indebtedness of the
Company to enforce subordination as herein provided shall at any time in any way
be prejudiced or impaired by any act or failure to act on the part of the
Company, as the case may be, or by any act or failure to act, in good faith, by
any such holder, or by any noncompliance by the Company, as the case may be,
with the terms, provisions and covenants of this Indenture, regardless of any
knowledge thereof that any such holder may have or otherwise be charged with.

     Without in any way limiting the generality of the foregoing paragraph, the
holders of Senior Indebtedness of the Company may, at any time and from time to
time, without the consent of or notice to the Trustee or the Securityholders,
without incurring responsibility to the Securityholders and without impairing or
releasing the subordination provided in this Article XV or the obligations
hereunder of the holders of the Securities to the holders of such Senior
Indebtedness, do any one or more of the following: (i) change the manner, place
or terms of payment or extend the time of payment of, or renew or alter, such
Senior Indebtedness, or otherwise amend or supplement in any manner such Senior
Indebtedness or any instrument evidencing the same or any agreement under which
such Senior Indebtedness is outstanding; (ii) sell, exchange, release or
otherwise deal with any property pledged, mortgaged or otherwise securing such
Senior Indebtedness; (iii) release any Person liable in any manner for the
collection of such Senior Indebtedness; and (iv) exercise or refrain from
exercising any rights against the Company, as the case may be, and any other
Person.

                                  ARTICLE XVI

                     EXTENSION OF INTEREST PAYMENT PERIOD

     SECTION 16.1.  Extension of Interest Payment Period.

     So long as no Event of Default has occurred and is continuing, the Company
shall have the right, at any time and from time to time during the term of the
Securities, to defer payments of interest by extending the interest payment
period of such Securities for a period not exceeding 10 consecutive semiannual
periods, including the first such semi-annual period during such extension
period (the "Extended Interest Payment Period"), during which Extended Interest
Payment Period no interest shall be due and payable; provided that no Extended
                                                     -------- ----            
Interest Payment Period may extend beyond the Maturity Date.  To the extent
permitted by applicable law, interest, the payment of which has been deferred
because of the extension of the interest payment period pursuant to this Section
16.1, will bear interest thereon at the Coupon Rate compounded semi-annually for
each semi-annual period of the Extended Interest Payment Period ("Compounded
Interest"). At the end of the Extended Interest Payment Period, the Company
shall pay all interest accrued and unpaid on the Securities, including any
Additional Interest and Compounded Interest (together, "Deferred Interest") that
shall be payable to the holders of the Securities in whose names the Securities
are registered in the Security Register on the record date immediately preceding
the end of the Extended Interest Payment Period. Before the termination of any
Extended Interest Payment Period, the Company may further defer payments of
interest by further extending such period, provided that such period, together
                                           --------                           
with all such previous and further extensions within such Extended Interest
Payment Period, shall not exceed 10 consecutive semi-annual periods, including
the first such semi-annual period during such Extended Interest Payment Period,
or extend beyond the Maturity Date.  Upon the termination of any Extended
Interest Payment Period and the payment of all Deferred Interest then due, the
Company may elect to commence a new Extended Interest Payment Period, subject to
the foregoing requirements.  No interest shall 

                                       45
<PAGE>
 
be due and payable during an Extended Interest Payment Period, except at the end
thereof, but the Company may prepay at any time all or any portion of the
interest accrued during an Extended Interest Payment Period.

     SECTION 16.2.  Notice of Extension.

     (a) If the Property Trustee is the only registered holder of the Securities
at the time the Company selects an Extended Interest Payment Period, the Company
shall give written notice to the Administrative Trustees, the Property Trustee
and the Trustee of its election of such Extended Interest Payment Period at
least five Business Days before the earlier of (i) the next succeeding date on
which Distributions on the Trust Securities issued by BFC Capital Trust would
have been payable except for such election, or (ii) the date BFC Capital Trust
is required to give notice of the record date, or the date such Distributions
are payable, to any national securities exchange or to holders of the Capital
Securities issued by BFC Capital Trust, but in any event at least five Business
Days before such record date.

     (b) If the Property Trustee is not the only holder of the Securities at the
time the Company elects an Extended Interest Payment Period, the Company shall
give the holders of the Securities and the Trustee written notice of its
election of such Extended Interest Payment Period at least 10 Business Days
before the earlier of (i) the next succeeding Interest Payment Date, or (ii) the
date the Company is required to give notice of the record or payment date of
such interest payment to any national securities exchange.

     (c) The semi-annual period in which any notice is given pursuant to
paragraphs (a) or (b) of this Section 16.2 shall be counted as one of the 10
semi-annual periods permitted in the maximum Extended Interest Payment Period
permitted under Section 16.1.

     The Bank of New York hereby accepts the trusts in this Indenture declared
and provided, upon the terms and conditions hereinabove set forth.

                                       46
<PAGE>
 
          IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed by their respective officers thereunto duly authorized, as of
the day and year first above written .

                                        BANCFIRST CORPORATION


                                        By:_____________________________________
                                        Name:___________________________________
                                        Title:__________________________________



                                        THE BANK OF NEW YORK,
                                        as Trustee


                                        By:_____________________________________
                                        Name:___________________________________
                                        Title:__________________________________

                                       47
<PAGE>
 
                                   EXHIBIT A
                          (FORM OF FACE OF SECURITY)

          [IF THIS SECURITY IS A GLOBAL SECURITY, INSERT:  THIS SECURITY IS A
GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND
IS REGISTERED IN THE NAME OF THE DEPOSITORY TRUST COMPANY ("DTC") OR A NOMINEE
OF DTC.  THIS SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF
A PERSON OTHER THAN DTC OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES
DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS SECURITY (OTHER THAN A
TRANSFER OF THIS SECURITY AS A WHOLE BY DTC TO A NOMINEE OF DTC OR BY A NOMINEE
OF DTC TO DTC OR ANOTHER NOMINEE OF DTC) MAY BE REGISTERED EXCEPT IN LIMITED
CIRCUMSTANCES.

          UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
DTC TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR
PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN
SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY
PAYMENT HEREON IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY
AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF
FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

          [THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED (THE "SECURITIES ACT") OR ANY STATE SECURITIES LAWS OR ANY
OTHER APPLICABLE SECURITIES LAW.  NEITHER THIS SECURITY NOR ANY INTEREST OR
PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED,
ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, SUCH REGISTRATION.

          THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF AGREES TO OFFER,
SELL OR OTHERWISE TRANSFER THIS SECURITY, PRIOR TO THE DATE (THE "RESALE
RESTRICTION TERMINATION DATE") WHICH IS THREE YEARS AFTER THE LATER OF THE
ORIGINAL ISSUANCE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY
"AFFILIATE" OF THE COMPANY WAS THE OWNER OF THIS SECURITY (OR ANY PREDECESSOR OF
THIS SECURITY) ONLY (A) TO THE COMPANY, (B) PURSUANT TO A REGISTRATION STATEMENT
WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES ACT, (C) SO LONG AS THIS
SECURITY IS ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT
("RULE 144A"), TO A PERSON IT REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL
BUYER" (AS DEFINED IN RULE 144A) THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE
ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE
TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND
SALES TO NON-U.S.  PERSONS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE
MEANING OF REGULATION S UNDER THE SECURITIES ACT, (E) TO AN INSTITUTIONAL
"ACCREDITED INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH (A)(1), (2), (3) OR (7)
OF RULE 501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THIS SECURITY FOR ITS OWN
ACCOUNT, OR FOR THE ACCOUNT OF SUCH AN INSTITUTIONAL ACCREDITED INVESTOR, FOR
INVESTMENT PURPOSES AND NOT WITH A VIEW TO, OR FOR OFFER OR SALE IN CONNECTION
WITH, ANY DISTRIBUTION IN VIOLATION OF THE SECURITIES ACT, OR (F) PURSUANT TO
ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS UNDER THE
SECURITIES ACT, SUBJECT TO THE RIGHT OF THE CORPORATION PRIOR TO ANY SUCH OFFER,
SALE OR TRANSFER (i) PURSUANT TO CLAUSE (D), (E) OR (F) TO REQUIRE THE DELIVERY
OF AN OPINION OF COUNSEL, CERTIFICATIONS AND/OR OTHER INFORMATION SATISFACTORY
TO THE CORPORATION, AND (ii) PURSUANT TO CLAUSE (E), TO REQUIRE THAT A
CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THE REVERSE OF THIS SECURITY IS
COMPLETED AND DELIVERED BY THE TRANSFEREE TO THE COMPANY.  SUCH HOLDER 

                                      A-I
<PAGE>
 
FURTHER AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS SECURITY IS
TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND.]

          [THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT AND
MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR
BENEFIT OF, U.S. PERSONS UNLESS REGISTERED UNDER THE SECURITIES ACT OR AN
EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT IS
AVAILABLE.]

                                     A-II
<PAGE>
 
No.                          CUSIP No.  ___________________BANCFIRST CORPORATION

9.65% SERIES _ JUNIOR SUBORDINATED DEFERRABLE INTEREST DEBENTURE DUE JANUARY 15,
2027

          BancFirst Corporation, an Oklahoma corporation (the "Company," which
term includes any successor Person under the Indenture hereinafter referred to),
for value received, hereby promises to pay to ____________________, as Property
Trustee of BFC Capital Trust I, or registered assigns, the principal sum of
_______________________________________________________________ ($__________) on
January 15, 2027 (the "Maturity Date"), unless previously redeemed, and to pay
interest on the outstanding principal amount hereof from February 4, 1997, or
from the most recent interest payment date (each such date, an "Interest Payment
Date") to which interest has been paid or duly provided for, semi-annually
(subject to deferral as set forth herein) in arrears on January 15 and July 15
of each year, commencing July 15, 1997 (each, an "Interest Payment Date"), at
the rate of 9.65% per annum until the principal hereof shall have become due and
payable, and on any overdue principal and premium, if any, and (without
duplication and to the extent that payment of such interest is enforceable under
applicable law) on any overdue installment of interest at the same rate per
annum compounded semi-annually.  The amount of interest payable on any Interest
Payment Date shall be computed on the basis of a 360-day year of twelve 30-day
months.  In the event that any date on which the principal of (or premium, if
any) or interest on this Security is payable is not a Business Day, then payment
payable on such date will be made on the next succeeding day that is a Business
Day (and without any interest or other payment in respect of any such delay),
with the same force and effect as if made on such date.

          The interest installment so payable, and punctually paid or duly
provided for, on any Interest Payment Date will, as provided in the Indenture,
be paid to the Person in whose name this Security (or one or more Predecessor
Securities, as defined in said Indenture) is registered at the close of business
on the regular record date for such interest installment, which shall be the
first day of the month in which the relevant Interest Payment Date falls.  Any
such interest installment not punctually paid or duly provided for shall
forthwith cease to be payable to the holders on such regular record date and may
be paid to the Person in whose name this Security (or one or more Predecessor
Securities) is registered at the close of business on a special record date to
be fixed by the Trustee for the payment of such defaulted interest, notice
whereof shall be given to the holders of Securities not less than 10 days prior
to such special record date, or may be paid at any time in any other lawful
manner not inconsistent with the requirements of any securities exchange on
which the Securities may be listed, and upon such notice as may be required by
such exchange, all as more fully provided in the Indenture.

          The principal of (and premium, if any) and interest on this Security
shall be payable at the office or agency of the Trustee in The City of New York
maintained for that purpose in any coin or currency of the United States of
America that at the time of payment is legal tender for payment of public and
private debts; provided, however, that, payment of interest may be made at the
               --------  -------                                              
option of the Company by (i) check mailed to the holder at such address as shall
appear in the Security Register or (ii) by transfer to an account maintained by
the Person entitled thereto, provided that proper written transfer instructions
have been received by the relevant record date.  Notwithstanding the foregoing,
so long as the Holder of this Security is BFC Capital Trust I or the Property
Trustee thereof, the payment of the principal of (and premium, if any) and
interest on this Security will be made in immediately available funds at such
place and to such account as may be designated by the Property Trustee.

          The indebtedness evidenced by this Security is, to the extent provided
in the Indenture, subordinate and junior in right of payment to the prior
payment in full of all Senior Indebtedness, and this Security is issued subject
to the provisions of the Indenture with respect thereto.  Each holder of this
Security, by accepting the same, (a) agrees to and shall be bound by such
provisions, (b) authorizes and directs the Trustee on his or her behalf to take
such action as may be necessary or appropriate to acknowledge or effectuate the
subordination so provided and (c) appoints the Trustee his or her attorney-in-
fact for any and all such purposes.  Each holder hereof, by his or her
acceptance hereof, hereby waives all notice of the acceptance of the
subordination provisions contained herein and in the Indenture by each holder of
Senior Indebtedness, whether now outstanding or hereafter incurred, and waives
reliance by each such holder upon said provisions.

          This Security shall not be entitled to any benefit under the Indenture
hereinafter referred to, be valid or become obligatory for any purpose until the
Certificate of Authentication hereon shall have been signed by or on behalf of
the Trustee.


          The provisions of this Security are continued on the reverse side
hereof and such provisions shall for all purposes have the same effect as though
fully set forth at this place.

                                     A-III
<PAGE>
 
          IN WITNESS WHEREOF, the Company has caused this Security to be
executed.


                                        BANCFIRST CORPORATION



                                        By:_____________________________________
                                           Joe T. Shockley, Jr.
                                           Executive Vice President and Chief 
                                            Financial Officer


Attest:
By:______________________________________
  Randy P. Foraker, Secretary



                         CERTIFICATE OF AUTHENTICATION

                                           This is one of the Securities
referred to in the within-mentioned Indenture.


Dated____________________________________


THE BANK OF NEW YORK, as Trustee



By:______________________________________
                                           Authorized Signatory

                                     A-IV
<PAGE>
 
                         (FORM OF REVERSE OF SECURITY)

     This Security is one of the Securities of the Company (herein sometimes
referred to as the "Securities"), specified in the Indenture, all issued or to
be issued under and pursuant to an Indenture, dated as of February 4, 1997 (the
"Indenture"), duly executed and delivered between the Company and The Bank of
New York, as Debenture Trustee (the "Trustee"), to which Indenture reference is
hereby made for a description of the rights, limitations of rights, obligations,
duties and immunities thereunder of the Trustee, the Company and the holders of
the Securities.

     Upon the occurrence and continuation of a Special Event prior to January
15, 2007, the Company shall have the right to redeem this Security in whole (but
not in part) at the Special Event Redemption Price. "Special Event Redemption
Price" shall mean the greater of (x) 100% of the principal amount to be redeemed
or (y) the sum, as determined by a Quotation Agent, of the present values of the
remaining scheduled payments of principal and interest hereon discounted to the
redemption date on a semi-annual basis (assuming a 360-day year consisting of
twelve 30-day months) at the Adjusted Treasury Rate, plus, in either case, any
accrued and unpaid interest thereon, including Compounded Interest and
Additional Interest, if any, to the date of such redemption.

     In addition, the Company shall have the right to redeem this Security, in
whole or (subject to Section 14.2 of the Indenture) in part, at any time on or
after January 15, 2007, at the Optional Redemption Price as set forth below
(expressed as percentages of the outstanding principal amount to be redeemed)
plus, in either case, accrued and unpaid interest thereon (including Additional
Interest and Compounded Interest, if any) to the applicable date of redemption
if redeemed during the 12-month period beginning January 15 of the year
indicated below:

<TABLE>
<CAPTION>
               YEAR                   PERCENTAGE
               ----                   ----------
               <S>                    <C>
               2007.................  104.825%
               2008.................  104.343%
               2009.................  103.860%
               2010.................  103.378%
               2011.................  102.895%
               2012.................  102.413%
               2013.................  101.930%
               2014.................  101.448%
               2015.................  100.965%
               2016.................  100.483%
               2017 and thereafter..  100.000%
</TABLE>

     The Optional Redemption Price or the Special Event Redemption Price, as the
case requires, shall be paid by the Trustee prior to 12:00 noon, New YorkCity
time, on the date of such redemption or at such earlier time as the Company
determines, provided, that the Company shall deposit with the Trustee an amount
sufficient to pay the applicable Redemption Price by 10:00 a.m., New York City
time, on the date such Redemption Price is to be paid.  Any redemption pursuant
to this paragraph will be made upon not less than 30 days nor more than 60 days
notice.

     If this Security is only partially redeemed by the Company in accordance
with the terms hereof,  this Security will be redeemed pro rata or by lot or by
any other method utilized by the Trustee.

     In the event of redemption of this Security in part only, a new Security or
Securities for the unredeemed portion hereof will be issued in the name of the
holder hereof upon the cancellation hereof.

     Notwithstanding the foregoing, any redemption of this Security by the
Company shall be subject to the prior approval of the Board of Governors of the
Federal Reserve System (the "Federal Reserve"), if such approval is then
required under capital guidelines or policies of the Federal Reserve.

     In case an Event of Default, as defined in the Indenture, shall have
occurred and be continuing, the principal of all of the Securities may be
declared, and upon such declaration shall become, due and payable, in the
manner, with the effect and subject to the conditions provided in the Indenture.

     The Indenture contains provisions permitting the Company and the Trustee,
with the consent of the holders of a majority in aggregate principal amount of
the Securities at the time outstanding, as defined in the Indenture, to execute
supplemental indentures for the purpose of adding any provisions to or changing
in any manner or eliminating any of the provisions of the Indenture or of
modifying in any manner the rights of the holders of the Securities; provided,
                                                                     -------- 

                                      A-V
<PAGE>
 
however, that no such supplemental indenture shall, without the consent of each
- -------                                                                        
holder of Securities then outstanding and affected thereby, (i) change the
Maturity Date of any Securities, or reduce the principal amount thereof, or
change any redemption provisions applicable thereto, or reduce the rate or
extend the time of payment of interest thereon (subject to Article XVI of the
Indenture), or make the principal of, or interest or premium on, the Securities
payable in any coin or currency other than U.S. dollars, or impair or affect the
right of any holder of Securities to institute suit for the payment thereof, or
(ii) reduce the aforesaid percentage of Securities, the holders of which are
required to consent to any such supplemental indenture.  The Indenture also
contains provisions permitting the holders of a majority in aggregate principal
amount of the Securities at the time outstanding affected thereby, on behalf of
all of the holders of the Securities, to waive any past default in the
performance of any of the covenants contained in the Indenture, or established
pursuant to the Indenture, and its consequences, except a default in the payment
of the principal of or premium, if any, or interest on any of the Securities or
a default in respect of any covenant or provision under which the Indenture
cannot be modified or amended without the consent of each holder of Securities
then outstanding.  Any such consent or waiver by the holder of this Security
(unless revoked as provided in the Indenture) shall be conclusive and binding
upon such holder and upon all future holders and owners of this Security and of
any Security issued in exchange herefor or in place hereof (whether by
registration of transfer or otherwise), irrespective of whether or not any
notation of such consent or waiver is made upon this Security.

     No reference herein to the Indenture and no provision of this Security or
of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of and premium, if any, and
interest on this Security at the time and place and at the rate and in the money
herein prescribed.

     The Company shall have the right, at any time and from time to time during
the term of the Securities, to defer payments of interest by extending the
interest payment period of such Securities for a period not exceeding 10
consecutive semi-annual periods, including the first such semi-annual period
during such extension period, and not to extend beyond the Maturity Date of the
Securities (an "Extended Interest Payment Period' ), at the end of which period
the Company shall pay all interest then accrued and unpaid together with
interest thereon at the rate specified for the Securities to the extent that
payment of such interest is enforceable under applicable law).  Before the
termination of any such Extended Interest Payment Period, the Company may
further defer payments of interest by further extending such Extended Interest
Payment Period, provided that such Extended Interest Payment Period, together
with all such previous and further extensions within such Extended Interest
Payment Period, shall not exceed 10 consecutive semi-annual periods, including
the first semi-annual period during such Extended Interest Payment Period, or
extend beyond the Maturity Date of the Securities.  Upon the termination of any
such Extended Interest Payment Period and the payment of all accrued and unpaid
interest and any additional amounts then due, the Company may commence a new
Extended Interest Payment Period, subject to the foregoing requirements.

     The Company has agreed that it will not (i) declare or pay any dividends or
distributions on, or redeem, purchase, acquire, or make a liquidation payment
with respect to, any of the Company's capital stock (which includes common and
preferred stock) or (ii) make any payment of principal, interest or premium, if
any, on or repay or repurchase or redeem any debt securities of the Company that
rank pari passu with or junior in right of payment to the Securities or (iii)
make any guarantee payments with respect to any guarantee by the Company of the
debt securities or any Subsidiary of the Company if such guarantee ranks pari
passu or junior in right of payment to the Securities (other than (a) dividends
or distributions in shares of, or options, warrants or rights to subscribe for
or purchase shares of, Common Stock of the Company, (b) any declaration of a
dividend in connection with the implementation of a stockholder's rights plan,
or the issuance of stock under any such plan in the future, or the redemption or
repurchase of any such rights pursuant thereto, (c) payments under the Capital
Securities Guarantee, (d) as a result of a reclassification of the Company's
capital stock or the exchange or the conversion of one class or series of the
Company's capital stock for another class or series of the Company's capital
stock, (e) the purchase of fractional interests in shares of the Company's
capital stock pursuant to the exchange or conversion of such capital stock or
the security being exchanged or converted and (f) purchases of Common Stock
related to the issuance of Common Stock or rights under any of the Company's
benefit plans for its directors, officers or employees or any of the Company's
dividend reinvestment plans) if at such time (i) there shall have occurred any
event of which the Company has actual knowledge that (a) is, or with the giving
of notice or the lapse of time, or both, would be, an Event of Default and (b)
in respect of which the Company shall not have taken reasonable steps to cure,
(ii) if the Securities are held by BFC Capital Trust I or the Property Trustee
thereof, the Company shall be in default with respect to its payment of any
obligations under the Capital Securities Guarantee or (iii) the Company shall
have given notice of its election of the exercise of its right to extend the
interest payment period and any such extension shall be continuing.

     The Company will have the right at any time to terminate BFC Capital Trust
I and cause the Securities to be distributed to the holders of the Trust
Securities in liquidation of BFC Capital Trust I subject to (i) the prior
approval 

                                     A-VI
<PAGE>
 
of the Federal Reserve if such approval is then required under applicable
capital guidelines or policies of the Federal Reserve and (ii) the Company
having received an opinion of counsel experienced in such matters to the effect
that such distribution will not be a taxable event to such holders.

     The Securities are issuable only in registered form without coupons in
denominations of $1,000 and any integral multiple thereof.  As provided in the
Indenture and subject to the transfer restrictions limitations as may be
contained herein and therein from time to time, this Security is transferable by
the holder hereof on the Security Register of the Company, upon surrender of
this Security for registration of transfer at the office or agency of the
Company in The City of New York accompanied by a written instrument or
instruments of transfer in form satisfactory to the Company or the Trustee duly
executed by the holder hereof or his attorney duly authorized in writing, and
thereupon one or more new Securities of authorized denominations and for the
same aggregate principal amount and series will be issued to the designated
transferee or transferees.  No service charge will be made for any such
transfer, but the Company may require payment of a sum sufficient to cover any
tax or other governmental charge payable in relation thereto.

     Prior to due presentment for registration of transfer of this Security, the
Company, the Trustee, any paying agent and the registrar may deem and treat the
holder hereof as the absolute owner hereof (whether or not this Security shall
be overdue and notwithstanding any notice of ownership or writing hereon made by
anyone other than the Security Registrar) for the purpose of receiving payment
of or on account of the principal hereof and premium, if any, and (subject to
Section 2.6 of the Indenture) interest due hereon and for all other purposes,
and neither the Company nor the Trustee nor any paying agent nor any registrar
shall be affected by any notice to the contrary.

     No recourse shall be had for the payment of the principal of or premium, if
any, or interest on this Security, or for any claim based hereon, or otherwise
in respect hereof, or based on or in respect of the Indenture, against any
incorporator, stockholder, officer or director, past, present or future, as
such, of the Company or of any predecessor or successor Person, whether by
virtue of any constitution, statute or rule of law, or by the enforcement of any
assessment or penalty or otherwise, all such liability being, by the acceptance
hereof and as part of the consideration for the issuance hereof, expressly
waived and released.

     All terms used but not defined in this Security that are defined in the
Indenture shall have the meanings assigned to them in the Indenture .

     THE INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICT OF
LAW PRINCIPLES.

                                     A-VII

<PAGE>
 
                                                                     EXHIBIT 4.3





 
                   ========================================

                SERIES A CAPITAL SECURITIES GUARANTEE AGREEMENT

                             BancFirst Corporation

                         Dated as of February 4, 1997

                   ========================================
<PAGE>
 
                               TABLE OF CONTENTS
                               -----------------

<TABLE>
<CAPTION>
                                                                                                 Page
                                                                                                 ----
<S>            <C>                                                                               <C>
ARTICLE I      DEFINITIONS AND INTERPRETATION..................................................   -1-
               SECTION 1.1 Definitions and Interpretation......................................   -1-
                           ------------------------------

ARTICLE II     TRUST INDENTURE ACT.............................................................   -4-
               SECTION 2.1  Trust Indenture Act; Application...................................   -4-
                            --------------------------------
               SECTION 2.2  Lists of Holders of Securities.....................................   -5-
                            ------------------------------
               SECTION 2.3  Reports by the Capital Securities Guarantee Trustee................   -5-
                            ---------------------------------------------------
               SECTION 2.4  Periodic Reports to Capital Securities Guarantee Trustee............   -5-
                            -------------------------------------------------------
               SECTION 2.5  Evidence of Compliance with Conditions Precedent...................   -5-
                            ------------------------------------------------
               SECTION 2.6  Events of Default; Waiver..........................................   -5-
                            -------------------------
               SECTION 2.7  Notice of Default..................................................   -6-
                            -----------------
               SECTION 2.8  Conflicting Interests..............................................   -6-
                            ---------------------

ARTICLE III    POWERS, DUTIES AND RIGHTS OF
                    CAPITAL SECURITIES GUARANTEE TRUSTEE.......................................   -6-
               SECTION 3.1  Powers and Duties of the Capital Securities Guarantee Trustee......   -6-
                            -------------------------------------------------------------
               SECTION 3.2  Certain Rights of Capital Securities Guarantee Trustee.............   -8-
                            ------------------------------------------------------
               SECTION 3.3. Not Responsible for Recitals or Issuance of Series A
                            ----------------------------------------------------
                                   Capital Securities Guarantee................................  -10-
                                   ----------------------------

ARTICLE IV     CAPITAL SECURITIES GUARANTEE TRUSTEE............................................  -10-
               SECTION 4.1  Capital Securities Guarantee Trustee; Eligibility..................  -10-
                            -------------------------------------------------
               SECTION 4.2  Appointment, Removal and Resignation of Capital
                            -----------------------------------------------
                                   Securities Guarantee Trustee................................  -10-
                                   ----------------------------
               SECTION 4.3  Compensation.......................................................  -10-
                            ------------

ARTICLE V      GUARANTEE.......................................................................  -11-
               SECTION 5.1  Guarantee..........................................................  -11-
                            ---------
               SECTION 5.2  Waiver of Notice and Demand........................................  -11-
                            ---------------------------
               SECTION 5.3  Obligations Not Affected...........................................  -11-
                            ------------------------
               SECTION 5.4  Rights of Holders..................................................  -12-
                            -----------------
               SECTION 5.5  Guarantee of Payment...............................................  -13-
                            --------------------
               SECTION 5.6  Subrogation........................................................  -13-
                            -----------
               SECTION 5.7  Independent Obligations............................................  -13-
                            -----------------------

ARTICLE VI     LIMITATION OF TRANSACTIONS; SUBORDINATION.......................................  -13-
               SECTION 6.1  Limitation of Transactions.........................................  -13-
                            --------------------------
               SECTION 6.2  Ranking............................................................  -14-
                            -------

ARTICLE VII    TERMINATION.....................................................................  -14-
               SECTION 7.1  Termination........................................................  -14-
                            -----------
</TABLE> 
<PAGE>
 
<TABLE>
<S>            <C>                                                                               <C>
ARTICLE VIII   INDEMNIFICATION.................................................................  -14-
               SECTION 8.1  Exculpation........................................................  -14-
                            -----------
               SECTION 8.2  Indemnification....................................................  -15-
                            ---------------

ARTICLE IX     MISCELLANEOUS...................................................................  -15-
               SECTION 9.1  Successors and Assigns.............................................  -15-
                            ----------------------
               SECTION 9.2  Amendments.........................................................  -15-
                            ----------
               SECTION 9.3  Notices............................................................  -15-
                            -------
               SECTION 9.4  Exchange Offer.....................................................  -16-
                            --------------
               SECTION 9.5  Benefit............................................................  -17-
                            -------
               SECTION 9.6  Governing Law......................................................  -17-
                            -------------
</TABLE>

                                     -ii-
<PAGE>
 
                            CROSS-REFERENCE TABLE*
<TABLE>
<CAPTION>
    Section of
Trust Indenture Act                                         Section of 
 1939, as Amended                                           Guarantee   
- ---------------------                                       ----------
<S>                                                         <C> 
Section  310   (a).......................................   4.1 (a) 
               (b).......................................   4.1 (c), 2.8 
               (c).......................................   Inapplicable    
Section  311   (a).......................................   2.2 (b)         
               (b).......................................   2.2 (b)         
               (c).......................................   Inapplicable    
Section  312   (a).......................................   2.2 (a)         
               (b).......................................   2.2 (b)         
Section  313    .........................................   2.3             
Section  314   (a).......................................   2.4             
               (b).......................................   Inapplicable    
               (c).......................................   2.5             
               (d).......................................   Inapplicable    
               (e).......................................   1.1, 2.5, 3.2   
               (f).......................................   2.1, 3.2        
Section  315   (a).......................................   3.1 (d)         
               (b).......................................   2.7             
               (c).......................................   3.1 (c)         
               (d).......................................   3.1 (d)         
Section  316   (a).......................................   1.1, 2.6, 5.4   
               (b).......................................   5.3             
               (c).......................................   9.2             
Section  317   (a).......................................   Inapplicable    
               (b).......................................   Inapplicable    
Section  318   (a).......................................   2.1 (a)         
               (c).......................................   2.1 (b)         
</TABLE>

_____________________
* This Cross-Reference Table does not constitute part of this Guarantee and
shall not affect the interpretation of any of its terms or provisions.

                                     -iii-
<PAGE>
 
                SERIES A CAPITAL SECURITIES GUARANTEE AGREEMENT



     This SERIES A CAPITAL SECURITIES GUARANTEE AGREEMENT (the "Series A Capital
Securities Guarantee"), dated as of February 4, 1997, is executed and delivered
by BancFirst Corporation, an Oklahoma corporation (the "Guarantor"), and The
Bank of New York, as trustee (the "Capital Securities Guarantee Trustee"), for
the benefit of the Holders (as defined herein) from time to time of the Series A
Capital Securities (as defined herein) of BFC Capital Trust I, a Delaware
statutory business trust (the "Issuer").

     WHEREAS, pursuant to an Amended and Restated Declaration of Trust (the
"Declaration"), dated as of February 4, 1997, among the trustees of the Issuer,
the Guarantor, as sponsor, and the holders from time to time of undivided
beneficial interests in the assets of the Issuer, the Issuer (i) is issuing on
the date hereof 25,000 capital securities, having an aggregate liquidation
amount of $25,000,000, such capital securities being designated the 9.65% Series
A Capital Securities (collectively the "Series A Capital Securities") and (ii)
in connection with an Exchange Offer (as defined in the Declaration) will
execute and deliver the Series B Capital Securities Guarantee (as defined in the
Declaration) for the benefit of Holders of the Series B Capital Securities (as
defined in the Declaration).

     WHEREAS, as incentive for the Holders to purchase the Series A Capital
Securities, the Guarantor desires irrevocably and unconditionally to agree, to
the extent set forth in this Series A Capital Securities Guarantee, to pay to
the Holders of the Series A Capital Securities the Guarantee Payments (as
defined below), and the Guarantor agrees to make certain other payments on the
terms and conditions set forth herein.

     WHEREAS, the Guarantor is executing and delivering the Common Securities
Guarantee Agreement dated as of February 4, 1997 (the "Common Securities
Guarantee") for the benefit of the holders of the Common Securities (as defined
herein), the terms of which provide that if an Event of Default (as defined in
the Declaration) has occurred and is continuing, the rights of holders of the
Common Securities to receive Guarantee Payments under the Common Securities
Guarantee are subordinated, to the extent and in the manner set forth in the
Common Securities Guarantee, to the rights of Holders of Series A Capital
Securities and the Series B Capital Securities to receive Guarantee Payments
under this Series A Capital Securities Guarantee and the Series B Capital
Securities Guarantee, as the case may be.

     NOW, THEREFORE, in consideration of the purchase by each Holder of Series A
Capital Securities, which purchase the Guarantor hereby acknowledges shall
benefit the Guarantor, the Guarantor executes and delivers this Series A Capital
Securities Guarantee for the benefit of the Holders.

                                   ARTICLE I
                        DEFINITIONS AND INTERPRETATION

      SECTION 1.1   Definitions and Interpretation
                    ------------------------------

     In this Series A Capital Securities Guarantee, unless the context otherwise
requires:

     (a)  Capitalized terms used in this Series A Capital Securities Guarantee
but not defined in the preamble above have the respective meanings assigned to
them in this Section 1.1;
<PAGE>
 
     (b)    Terms defined in the Declaration as at the date of execution of this
Series A Capital Securities Guarantee have the same meaning when used in this
Series A Capital Securities Guarantee unless otherwise defined in this Series A
Capital Securities Guarantee;

     (c)    a term defined anywhere in this Series A Capital Securities
Guarantee has the same meaning throughout;

     (d)    all references to "the Series A Capital Securities Guarantee" or
"this Series A Capital Securities Guarantee" are to this Series A Capital
Securities Guarantee as modified, supplemented or amended from time to time;

     (e)    all references in this Series A Capital Securities Guarantee to
Articles and Sections are to Articles and Sections of this Series A Capital
Securities Guarantee, unless otherwise specified;

     (f)    a term defined in the Trust Indenture Act has the same meaning when
used in this Series A Capital Securities Guarantee, unless otherwise defined in
this Series A Capital Securities Guarantee or unless the context otherwise
requires; and

     (g)    a reference to the singular includes the plural and vice versa.

     "Affiliate" has the same meaning as given to that term in Rule 405 under
      ---------                                                              
the Securities Act of 1933, as amended, or any successor rule thereunder.

     "Business Day" shall mean any day other than a Saturday or a Sunday, or a
      ------------                                                            
day on which banking institutions in The City of New York or Oklahoma City,
Oklahoma are authorized or required by law or executive order to close.

     "Capital Securities Guarantee Trustee" shall mean The Bank of New York,
      ------------------------------------                                  
until a Successor Capital Securities Guarantee Trustee has been appointed and
has accepted such appointment pursuant to the terms of this Series A Capital
Securities Guarantee and thereafter means each such Successor Capital Securities
Guarantee Trustee.

     "Common Securities" shall mean the securities representing common undivided
      -----------------                                                         
beneficial interests in the assets of the Issuer.

     "Corporate Trust Office" shall mean the office of the Capital Securities
      ----------------------                                                 
Guarantee Trustee at which the corporate trust business of the Capital
Securities Guarantee Trustee shall, at any particular time, be principally
administered, which office at the date of execution of this Agreement is located
at 101 Barclay Street, 21 West, New York, New York 10286.

     "Covered Person" shall mean any Holder or beneficial owner of Series A
      --------------                                                       
Capital Securities.

     "Debentures" shall mean the series of subordinated debt securities of the
      ----------                                                              
Guarantor designated the 9.65% Series A Junior Subordinated Deferrable Interest
Debentures due January 15, 2027 held by the Property Trustee (as defined in the
Declaration) of the Issuer.

     "Event of Default" shall mean a default by the Guarantor on any of its
      ----------------                                                     
payment or other obligations under this Series A Capital Securities Guarantee.

                                      -2-
<PAGE>
 
     "Guarantee Payments" shall mean the following payments or distributions,
      ------------------                                                     
without duplication, with respect to the Series A Capital Securities, to the
extent not paid or made by or on behalf of the Issuer: (i) any accumulated and
unpaid Distributions (as defined in the Declaration) that are required to be
paid on such Series A Capital Securities to the extent the Issuer has funds on
hand legally available therefor at such time, (ii) the redemption price,
including all accumulated and unpaid Distributions to the date of redemption
(the "Redemption Price") to the extent the Issuer has funds on hand legally
available therefor at such time, with respect to any Series A Capital Securities
called for redemption by the Issuer, and (iii) upon a voluntary or involuntary
termination and liquidation of the Issuer (other than in connection with the
distribution of Debentures to the Holders in exchange for Series A Capital
Securities as provided in the Declaration), the lesser of (a) the aggregate of
the liquidation amount and all accumulated and unpaid Distributions on the
Series A Capital Securities to the date of payment, to the extent the Issuer has
funds on hand legally available therefor, and (b) the amount of assets of the
Issuer remaining available for distribution to Holders in liquidation of the
Issuer. If an Event of Default has occurred and is continuing, no Guarantee
Payments under the Common Securities Guarantee with respect to the Common
Securities or any guarantee payment under any Other Common Securities Guarantees
shall be made until the Holders of Series A Capital Securities shall be paid in
full the Guarantee Payments to which they are entitled under this Series A
Capital Securities Guarantee.

     "Holder" shall mean any holder, as registered on the books and records of
      ------                                                                  
the Issuer, of any Series A Capital Securities; provided, however, that, in
                                                --------  -------          
determining whether the holders of the requisite percentage of Series A Capital
Securities have given any request, notice, consent or waiver hereunder, "Holder"
shall not include the Guarantor, any Affiliate of the Guarantor or the Capital
Securities Guarantee Trustee.

     "Indemnified Person" shall mean the Capital Securities Guarantee Trustee,
      ------------------                                                      
any Affiliate of the Capital Securities Guarantee Trustee, or any officers,
directors, shareholders, members, partners, employees, representatives,
nominees, custodians or agents of the Capital Securities Guarantee Trustee.

     "Indenture" shall mean the Indenture dated as of February 4, 1997, between
      ---------                                                                
the Guarantor (the "Debenture Issuer") and The Bank of New York, as trustee,
pursuant to which the Debentures are to be issued to the Property Trustee of the
Issuer.

     "Majority in liquidation amount of the Series A Capital Securities" shall
      -----------------------------------------------------------------       
mean, except as provided by the Trust Indenture Act, a vote by Holder(s) of
Series A Capital Securities, voting separately as a class, of more than 50% of
the aggregate liquidation amount (including the stated amount that would be paid
on redemption, liquidation or otherwise, plus accumulated and unpaid
Distributions to the date upon which the voting percentages are determined) of
all outstanding Series A Capital Securities.

     "Officers' Certificate" shall mean, with respect to any person, a
      ---------------------                                           
certificate signed by the Chief Executive Officer, the President, a Vice
President or the Controller of the Guarantor. Any Officers' Certificate
delivered with respect to compliance with a condition or covenant provided for
in this Series A Capital Securities Guarantee shall include:

     (a)    a statement that each officer signing the Officers' Certificate has
read the covenant or condition and the definitions relating thereto;

     (b)    a statement that each such officer has made such examination or
investigation as, in such officer's opinion, is necessary to enable such officer
to express an informed opinion as to whether or not such covenant or condition
has been complied with; and

                                      -3-
<PAGE>
 
     (c)    a statement as to whether, in the opinion of each such officer, such
condition or covenant has been complied with.

     "Other Common Securities Guarantees" shall have the same meaning as "Other
      ----------------------------------                                       
Guarantees" in the Common Securities Guarantee.

     "Other Debentures" shall mean all junior subordinated debentures issued by
      ----------------                                                         
the Guarantor from time to time and sold to trusts other than the Issuer to be
established by the Guarantor (if any), in each case similar to the Issuer.

     "Other Guarantees" shall mean all guarantees to be issued by the Guarantor
      ----------------                                                         
with respect to capital securities (if any) similar to the Series A Capital
Securities issued by trusts other than the Issuer to be established by the
Guarantor (if any), in each case similar to the Issuer.

     "Person" shall mean a legal person, including any individual, corporation,
      ------                                                                   
estate, partnership, joint venture, association, joint stock company, limited
liability company, trust, unincorporated association, or government or any
agency or political subdivision thereof, or any other entity of whatever nature.

     "Registration Rights Agreement" shall mean the Registration Rights
      -----------------------------                                    
Agreement, dated as of February 4, 1997, by and among the Guarantor, the Issuer
and the Initial Purchasers named therein as such agreement may be amended,
modified or supplemented from time to time.

     "Responsible Officer" shall mean, with respect to the Capital Securities
      -------------------                                                    
Guarantee Trustee, any officer within the Corporate Trust Office of the Capital
Securities Guarantee Trustee with direct responsibility for the administration
of this Series A Capital Securities Guarantee and also means, with respect to a
particular corporate trust matter, any other officer to whom such matter is
referred because of that officer's knowledge of and familiarity with the
particular subject.

     "Successor Capital Securities Guarantee Trustee" shall mean a successor
      ----------------------------------------------                        
Capital Securities Guarantee Trustee possessing the qualifications to act as
Capital Securities Guarantee Trustee under Section 4.1.

     "Trust Indenture Act" shall mean the Trust Indenture Act of 1939, as
      -------------------                                                
amended.

     "Trust Securities" shall mean the Common Securities and the Series A
      ----------------                                                   
Capital Securities and Series B Capital Securities, collectively.

                                  ARTICLE II
                              TRUST INDENTURE ACT

SECTION 2.1    Trust Indenture Act; Application
               --------------------------------

     (a)    This Series A Capital Securities Guarantee is subject to the
provisions of the Trust Indenture Act that are required to be part of this
Series A Capital Securities Guarantee and shall, to the extent applicable, be
governed by such provisions; and

     (b)    if and to the extent that any provision of this Series A Capital
Securities Guarantee limits, qualifies or conflicts with the duties imposed by
Section 310 to 317, inclusive, of the Trust Indenture Act, such imposed duties
shall control.

                                      -4-
<PAGE>
 
SECTION 2.2    Lists of Holders of Securities
               ------------------------------

     (a)    The Guarantor shall provide the Capital Securities Guarantee Trustee
(unless the Capital Securities Guarantee Trustee is otherwise the registrar of
the Capital Securities) with a list, in such form as the Capital Securities
Guarantee Trustee may reasonably require, of the names and addresses of the
Holders of the Series A Capital Securities ("List of Holders") as of such date,
(i) within one Business Day after January 1 and July 1 of each year, beginning
with July 1, 1997, and (ii) at any other time within 30 days of receipt by the
Guarantor of a written request from the Capital Securities Guarantee Trustee for
a List of Holders as of a date no more than 14 days before such List of Holders
is given to the Capital Securities Guarantee Trustee; provided, that the
                                                      --------          
Guarantor shall not be obligated to provide such List of Holders at any time the
List of Holders does not differ from the most recent List of Holders given to
the Capital Securities Guarantee Trustee by the Guarantor. The Capital
Securities Guarantee Trustee may destroy any List of Holders previously given to
it on receipt of a new List of Holders.

     (b)    The Capital Securities Guarantee Trustee shall comply with its
obligations under Sections 311(a), 311(b) and Section 312(b) of the Trust
Indenture Act.

SECTION 2.3    Reports by the Capital Securities Guarantee Trustee
               ---------------------------------------------------

     Within 60 days after January 15 of each year, commencing January 15, 1998,
the Capital Securities Guarantee Trustee shall provide to the Holders of the
Series A Capital Securities such reports as are required by Section 313 of the
Trust Indenture Act, if any, in the form and in the manner provided by Section
313 of the Trust Indenture Act. The Capital Securities Guarantee Trustee shall
also comply with the requirements of Section 313(d) of the Trust Indenture Act.

SECTION 2.4    Periodic Reports to Capital Securities Guarantee Trustee
               --------------------------------------------------------

     The Guarantor shall provide to the Capital Securities Guarantee Trustee
such documents, reports and information as required by Section 314 (if any) and
the compliance certificate required by Section 314 of the Trust Indenture Act in
the form, in the manner and at the times required by Section 314 of the Trust
Indenture Act. Delivery of such reports, information and documents to the
Capital Securities Guarantee Trustee is for informational purposes only and the
Capital Securities Guarantee Trustee's receipt of such shall not constitute
constructive notice of any information contained therein or determinable from
information contained therein, including the Guarantor's compliance with any of
its covenants hereunder (as to which the Capital Securities Guarantee Trustee is
entitled to rely exclusively on Officers' Certificates).

SECTION 2.5    Evidence of Compliance with Conditions Precedent
               ------------------------------------------------

     The Guarantor shall provide to the Capital Securities Guarantee Trustee
such evidence of compliance with any conditions precedent, if any, provided for
in this Series A Capital Securities Guarantee that relate to any of the matters
set forth in Section 314(c) of the Trust Indenture Act. Any certificate or
opinion required to be given by an officer pursuant to Section 314(c)(1) may be
given in the form of an Officers' Certificate.

SECTION 2.6    Events of Default; Waiver
               -------------------------

     The Holders of a Majority in liquidation amount of Series A Capital
Securities may, by vote, on behalf of the Holders of all of the Series A Capital
Securities, waive any past Event of Default and its consequences. 

                                      -5-
<PAGE>
 
Upon such waiver, any such Event of Default shall cease to exist, and any Event
of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Series A Capital Securities Guarantee, but no such waiver shall
extend to any subsequent or other default or Event of Default or impair any
right consequent thereon.

SECTION 2.7    Notice of Default
               -----------------

     (a)    The Capital Securities Guarantee Trustee shall, within 90 days after
the occurrence of an Event of Default with respect to this Capital Securities
Guarantee, mail by first class postage prepaid, to all Holders of the Series A
Capital Securities, notices of all Events of Default actually known to a
Responsible Officer of the Capital Securities Guarantee Trustee, unless such
Events of Default have been cured before the giving of such notice; provided,
                                                                    -------- 
that, except in the case of an Event of Default arising from the nonpayment of
any Guarantee Payment, the Capital Securities Guarantee Trustee shall be
protected in withholding such notice if and so long as the board of directors,
the executive committee, or a trust committee of directors and/or Responsible
Officers of the Capital Securities Guarantee Trustee in good faith determines
that the withholding of such notice is in the interests of the holders of the
Series A Capital Securities.

     (b)    The Capital Securities Guarantee Trustee shall not be deemed to have
knowledge of any Event of Default unless the Capital Securities Guarantee
Trustee shall have received written notice, or a Responsible Officer of the
Capital Securities Guarantee Trustee charged with the administration of the
Declaration shall have obtained actual knowledge, of such Event of Default.

SECTION 2.8    Conflicting Interests
               ---------------------

     The Declaration shall be deemed to be specifically described in this Series
A Capital Securities Guarantee for the purposes of clause (i) of the first
proviso contained in Section 310(b) of the Trust Indenture Act.

                                  ARTICLE III
                         POWERS, DUTIES AND RIGHTS OF
                     CAPITAL SECURITIES GUARANTEE TRUSTEE

SECTION 3.1    Powers and Duties of the Capital Securities Guarantee Trustee
               -------------------------------------------------------------

     (a)    This Series A Capital Securities Guarantee shall be held by the
Capital Securities Guarantee Trustee for the benefit of the Holders of the
Series A Capital Securities, and the Capital Securities Guarantee Trustee shall
not transfer this Series A Capital Securities Guarantee to any Person except a
Holder of Series A Capital Securities exercising his or her rights pursuant to
Section 5.4(b) or to a Successor Capital Securities Guarantee Trustee on
acceptance by such Successor Capital Securities Guarantee Trustee of its
appointment to act as Successor Capital Securities Guarantee Trustee. The right,
title and interest of the Capital Securities Guarantee Trustee shall
automatically vest in any Successor Capital Securities Guarantee Trustee, upon
acceptance by such Successor Capital Securities Guarantee Trustee of its
appointment hereunder, and such vesting and succession of title shall be
effective whether or not conveyancing documents have been executed and delivered
pursuant to the appointment of such Successor Capital Securities Guarantee
Trustee.

     (b)    If an Event of Default actually known to a Responsible Officer of
the Capital Securities Guarantee Trustee has occurred and is continuing, the
Capital Securities Guarantee Trustee shall enforce this Series A Capital
Securities Guarantee for the benefit of the Holders of the Series A Capital
Securities.

                                      -6-
<PAGE>
 
     (c)    The Capital Securities Guarantee Trustee, before the occurrence of
any Event of Default and after the curing of all Events of Default that may have
occurred, shall undertake to perform only such duties as are specifically set
forth in this Series A Capital Securities Guarantee, and no implied covenants
shall be read into this Series A Capital Securities Guarantee against the
Capital Securities Guarantee Trustee. In case an Event of Default has occurred
(that has not been cured or waived pursuant to Section 2.6) and is actually
known to a Responsible Officer of the Capital Securities Guarantee Trustee, the
Capital Securities Guarantee Trustee shall exercise such of the rights and
powers vested in it by this Series A Capital Securities Guarantee, and use the
same degree of care and skill in its exercise thereof, as a prudent person would
exercise or use under the circumstances in the conduct of his or her own
affairs.

     (d)    No provision of this Series A Capital Securities Guarantee shall be
construed to relieve the Capital Securities Guarantee Trustee from liability for
its own negligent action, its own negligent failure to act, or its own willful
misconduct, except that:

     (i)    prior to the occurrence of any Event of Default and after the curing
            or waiving of all such Events of Default that may have occurred:

            (A)  the duties and obligations of the Capital Securities Guarantee
                 Trustee shall be determined solely by the express provisions of
                 this Series A Capital Securities Guarantee, and the Capital
                 Securities Guarantee Trustee shall not be liable except for the
                 performance of such duties and obligations as are specifically
                 set forth in this Series A Capital Securities Guarantee, and no
                 implied covenants or obligations shall be read into this Series
                 A Capital Securities Guarantee against the Capital Securities
                 Guarantee Trustee; and

            (B)  in the absence of bad faith on the part of the Capital
                 Securities Guarantee Trustee, the Capital Securities Guarantee
                 Trustee may conclusively rely, as to the truth of the
                 statements and the correctness of the opinions expressed
                 therein, upon any certificates or opinions furnished to the
                 Capital Securities Guarantee Trustee and conforming to the
                 requirements of this Series A Capital Securities Guarantee;
                 provided, however, that in the case of any such certificates or
                 --------  -------
                 opinions that by any provision hereof are specifically required
                 to be furnished to the Capital Securities Guarantee Trustee,
                 the Capital Securities Guarantee Trustee shall be under a duty
                 to examine the same to determine whether or not they conform to
                 the requirements of this Series A Capital Securities Guarantee;

     (ii)  the Capital Securities Guarantee Trustee shall not be liable for any
           error of judgment made in good faith by a Responsible Officer of the
           Capital Securities Guarantee Trustee, unless it shall be proved that
           the Capital Securities Guarantee Trustee was negligent in
           ascertaining the pertinent facts upon which such judgment was made;

     (iii) the Capital Securities Guarantee Trustee shall not be liable with
           respect to any action taken or omitted to be taken by it in good
           faith in accordance with the direction of the Holders of a Majority
           in liquidation amount of the Series A Capital Securities relating to
           the time, method and place of conducting any proceeding for any
           remedy available to the Capital Securities Guarantee Trustee, or
           exercising any trust or power conferred upon the Capital Securities
           Guarantee Trustee under this Series A Capital Securities Guarantee;
           and

                                      -7-
<PAGE>
 
     (iv)  no provision of this Series A Capital Securities Guarantee shall
           require the Capital Securities Guarantee Trustee to expend or risk
           its own funds or otherwise incur personal financial liability in the
           performance of any of its duties or in the exercise of any of its
           rights or powers, if the Capital Securities Guarantee Trustee shall
           have reasonable grounds for believing that the repayment of such
           funds or liability is not reasonably assured to it under the terms of
           this Series A Capital Securities Guarantee or indemnity, reasonably
           satisfactory to the Capital Securities Guarantee Trustee, against
           such risk or liability is not reasonably assured to it.

SECTION 3.2    Certain Rights of Capital Securities Guarantee Trustee
               ------------------------------------------------------

     (a)   Subject to the provisions of Section 3.1:

     (i)   The Capital Securities Guarantee Trustee may conclusively rely, and
           shall be fully protected in acting or refraining from acting, upon
           any resolution, certificate, statement instrument, opinion, report,
           notice, request, direction, consent, order, bond, debenture, note,
           other evidence of indebtedness or other paper or document reasonably
           believed by it to be genuine and to have been signed, sent or
           presented by the proper party or parties.

     (ii)  Any direction or act of the Guarantor contemplated by this Series A
           Capital Securities Guarantee may be sufficiently evidenced by an
           Officers' Certificate.

     (iii) Whenever, in the administration of this Series A Capital Securities
           Guarantee, the Capital Securities Guarantee Trustee shall deem it
           desirable that a matter be proved or established before taking,
           suffering or omitting any action hereunder, the Capital Securities
           Guarantee Trustee (unless other evidence is herein specifically
           prescribed) may, in the absence of bad faith on its part, request and
           conclusively rely upon an Officers' Certificate which, upon receipt
           of such request, shall be promptly delivered by the Guarantor.

     (iv)  The Capital Securities Guarantee Trustee shall have no duty to see to
           any recording, filing or registration of any instrument (or any
           rerecording, refiling or registration thereof).

     (v)   The Capital Securities Guarantee Trustee may consult with counsel of
           its selection, and the advice or opinion of such counsel with respect
           to legal matters shall be full and complete authorization and
           protection in respect of any action taken, suffered or omitted by it
           hereunder in good faith and in accordance with such advice or
           opinion. Such counsel may be counsel to the Guarantor or any of its
           Affiliates and may include any of its employees. The Capital
           Securities Guarantee Trustee shall have the right at any time to seek
           instructions concerning the administration of this Series A Capital
           Securities Guarantee from any court of competent jurisdiction.

     (vi)  The Capital Securities Guarantee Trustee shall be under no obligation
           to exercise any of the rights or powers vested in it by this Series A
           Capital Securities Guarantee at the request or direction of any
           Holder, unless such Holder shall have provided to the Capital
           Securities Guarantee Trustee such security and indemnity, reasonably
           satisfactory to the Capital Securities Guarantee Trustee, against the
           costs, expenses (including attorneys' fees and expenses and the
           expenses of the Capital Securities Guarantee Trustee's agents,
           nominees or custodians) and liabilities that might be incurred by it
           in complying with such request or direction, including such
           reasonable advances as may be requested by the Capital Securities

                                      -8-
<PAGE>
 
            Guarantee Trustee; provided, that nothing contained in this Section
                               --------
            3.2(a)(vi) shall be taken to relieve the Capital Securities
            Guarantee Trustee, upon the occurrence of an Event of Default, of
            its obligation to exercise the rights and powers vested in it by
            this Series A Capital Securities Guarantee.

     (vii)  The Capital Securities Guarantee Trustee shall not be bound to make
            any investigation into the facts or matters stated in any
            resolution, certificate, statement, instrument, opinion, report,
            notice, request, direction, consent, order, bond, debenture, note,
            other evidence of indebtedness or other paper or document, but the
            Capital Securities Guarantee Trustee, in its discretion, may make
            such further inquiry or investigation into such facts or matters as
            it may see fit.

     (viii) The Capital Securities Guarantee Trustee may execute any of the
            trusts or powers hereunder or perform any duties hereunder either
            directly or by or through agents, nominees, custodians or attorneys,
            and the Capital Securities Guarantee Trustee shall not be
            responsible for any misconduct or negligence on the part of any such
            agent or attorney appointed with due care by it hereunder.

     (ix)   Any action taken by the Capital Securities Guarantee Trustee or its
            agents hereunder shall bind the Holders of the Series A Capital
            Securities, and the signature of the Capital Securities Guarantee
            Trustee or its agents alone shall be sufficient and effective to
            perform any such action. No third party shall be required to inquire
            as to the authority of the Capital Securities Guarantee Trustee to
            so act or as to its compliance with any of the terms and provisions
            of this Series A Capital Securities Guarantee, both of which shall
            be conclusively evidenced by the Capital Securities Guarantee
            Trustee's or its agent's taking such action.

     (x)    Whenever in the administration of this Series A Capital Securities
            Guarantee the Capital Securities Guarantee Trustee shall deem it
            desirable to receive instructions with respect to enforcing any
            remedy or right or taking any other action hereunder, the Capital
            Securities Guarantee Trustee (A) may request instructions from the
            Holders of a Majority in liquidation amount of the Series A Capital
            Securities, (B) may refrain from enforcing such remedy or right or
            taking such other action until such instructions are received, and
            (C) shall be protected in conclusively relying on or acting in
            accordance with such instructions.

     (xi)   The Capital Securities Guarantee Trustee shall not be liable for any
            action taken, suffered, or omitted to be taken by it in good faith,
            without negligence, and reasonably believed by it to be authorized
            or within the discretion or rights or powers conferred upon it by
            this Series A Capital Securities Guarantee.

     (b)    No provision of this Series A Capital Securities Guarantee shall be
deemed to impose any duty or obligation on the Capital Securities Guarantee
Trustee to perform any act or acts or exercise any right, power, duty or
obligation conferred or imposed on it in any jurisdiction in which it shall be
illegal, or in which the Capital Securities Guarantee Trustee shall be
unqualified or incompetent in accordance with applicable law, to perform any
such act or acts or to exercise any such right, power, duty or obligation. No
permissive power or authority available to the Capital Securities Guarantee
Trustee shall be construed to be a duty.

                                      -9-
<PAGE>
 
SECTION 3.3.   Not Responsible for Recitals or Issuance of Series A Capital
               ------------------------------------------------------------
Securities Guarantee
- --------------------

     The recitals contained in this Series A Capital Securities Guarantee shall
be taken as the statements of the Guarantor, and the Capital Securities
Guarantee Trustee does not assume any responsibility for their correctness. The
Capital Securities Guarantee Trustee makes no representation as to the validity
or sufficiency of this Series A Capital Securities Guarantee.

                                  ARTICLE IV
                     CAPITAL SECURITIES GUARANTEE TRUSTEE

SECTION 4.1    Capital Securities Guarantee Trustee; Eligibility
               -------------------------------------------------

     (a)   There shall at all times be a Capital Securities Guarantee Trustee
that shall:

     (i)   not be an Affiliate of the Guarantor; and

     (ii)  be a corporation organized and doing business under the laws of the
           United States of America or any State or Territory thereof or of the
           District of Columbia, or a corporation or Person permitted by the
           Securities and Exchange Commission to act as an institutional trustee
           under the Trust Indenture Act, authorized under such laws to exercise
           corporate trust powers, having a combined capital and surplus of at
           least 50 million U.S. dollars ($50,000,000), and subject to
           supervision or examination by Federal, State, Territorial or District
           of Columbia authority. If such corporation publishes reports of
           condition at least annually, pursuant to law or to the requirements
           of the supervising or examining authority referred to above, then,
           for the purposes of this Section 4.1(a)(ii), the combined capital and
           surplus of such corporation shall be deemed to be its combined
           capital and surplus as set forth in its most recent report of
           condition so published.

     (b)   If at any time the Capital Securities Guarantee Trustee shall cease
to be eligible to so act under Section 4.1(a), the Capital Securities Guarantee
Trustee shall immediately resign in the manner and with the effect set out in
Section 4.2(c).

     (c)   If the Capital Securities Guarantee Trustee has or shall acquire any
"conflicting interest" within the meaning of Section 310(b) of the Trust
Indenture Act, the Capital Securities Guarantee Trustee and Guarantor shall in
all respects comply with the provisions of Section 310(b) of the Trust Indenture
Act.

SECTION 4.2    Appointment, Removal and Resignation of Capital Securities
               ----------------------------------------------------------
Guarantee Trustee
- -----------------

     (a)    Subject to Section 4.2(b), the Capital Securities Guarantee Trustee
may be appointed or removed without cause at any time by the Guarantor except
during an Event of Default.

     (b)    The Capital Securities Guarantee Trustee shall not be removed in
accordance with Section 4.2(a) until a Successor Capital Securities Guarantee
Trustee has been appointed and has accepted such appointment by written
instrument executed by such Successor Capital Securities Guarantee Trustee and
delivered to the Guarantor.

     (c)    The Capital Securities Guarantee Trustee shall hold office until a
Successor Capital Securities Guarantee Trustee shall have been appointed or
until its removal or resignation. The Capital Securities 

                                      -10-
<PAGE>
 
Guarantee Trustee may resign from office (without need for prior or subsequent
accounting) by an instrument in writing executed by the Capital Securities
Guarantee Trustee and delivered to the Guarantor, which resignation shall not
take effect until a Successor Capital Securities Guarantee Trustee has been
appointed and has accepted such appointment by instrument in writing executed by
such Successor Capital Securities Guarantee Trustee and delivered to the
Guarantor and the resigning Capital Securities Guarantee Trustee.

     (d)    If no Successor Capital Securities Guarantee Trustee shall have been
appointed and accepted appointment as provided in this Section 4.2 within 60
days after delivery of an instrument of removal or resignation, the Capital
Securities Guarantee Trustee resigning or being removed may petition any court
of competent jurisdiction for appointment of a Successor Capital Securities
Guarantee Trustee. Such court may thereupon, after prescribing such notice, if
any, as it may deem proper, appoint a Successor Capital Securities Guarantee
Trustee.

     (e)    No Capital Securities Guarantee Trustee shall be liable for the acts
or omissions to act of any Successor Capital Securities Guarantee Trustee.

     (f)    Upon termination of this Series A Capital Securities Guarantee or
removal or resignation of the Capital Securities Guarantee Trustee pursuant to
this Section 4.2, the Guarantor shall pay to the Capital Securities Guarantee
Trustee all amounts due to the Capital Securities Guarantee Trustee accrued to
the date of such termination, removal or resignation.

SECTION 4.3    Compensation
               ------------

     The Guarantor agrees to pay to the Capital Securities Guarantee Trustee
from time to time such compensation for all services rendered by it hereunder as
may be mutually agreed upon in writing by the Capital Securities Guarantee
Trustee (which compensation shall not be limited by an provision or law in
regard to the compensation of a trustee of an express trust) and, except as
otherwise expressly provided herein, to reimburse the Capital Securities
Guarantee Trustee upon request for all reasonable expenses, disbursements and
advances incurred or made by the Capital Securities Guarantee Trustee, in
accordance with any provision of this Series A Capital Securities Guarantee
(including the reasonable compensation and the expenses and disbursements of its
agents and counsel), except any such expense, disbursement or advance as may be
attributable to its negligence or bad faith.

                                   ARTICLE V
                                   GUARANTEE

SECTION 5.1    Guarantee
               ---------

     The Guarantor irrevocably and unconditionally agrees to pay in full to the
Holders the Guarantee Payments (without duplication of amounts theretofore paid
by or on behalf of the Issuer), as and when due, regardless of any defense,
right of set-off or counterclaim that the Issuer may have or assert. The
Guarantor's obligation to make a Guarantee Payment may be satisfied by direct
payment of the required amounts by the Guarantor to the Holders or by causing
the Issuer to pay such amounts to the Holders.

SECTION 5.2    Waiver of Notice and Demand
               ---------------------------

     The Guarantor hereby waives notice of acceptance of this Series A Capital
Securities Guarantee and of any liability to which it applies or may apply,
presentment, demand for payment, any right to require a

                                      -11-
<PAGE>
 
proceeding first against the Issuer or any other Person before proceeding
against the Guarantor, protest, notice of nonpayment, notice of dishonor, notice
of redemption and all other notices and demands.

SECTION 5.3    Obligations Not Affected
               ------------------------

     The obligations, covenants, agreements and duties of the Guarantor under
this Series A Capital Securities Guarantee shall in no way be affected or
impaired by reason of the happening from time to time of any of the following:

     (a)    the release or waiver, by operation of law or otherwise, of the
performance or observance by the Issuer of any express or implied agreement,
covenant, term or condition relating to the Series A Capital Securities to be
performed or observed by the Issuer;

     (b)    the extension of time for the payment by the Issuer of all or any
portion of the Distributions, Redemption Price, Liquidation Distribution or any
other sums payable under the terms of the Series A Capital Securities or the
extension of time for the performance of any other obligation under, arising out
of, or in connection with, the Series A Capital Securities (other than an
extension of time for payment of Distributions, Redemption Price, Liquidation
Distribution or other sum payable that results from the extension of any
interest payment period on the Debentures permitted by the Indenture);

     (c)    any failure, omission, delay or lack of diligence on the part of the
Holders to enforce, assert or exercise any right, privilege, power or remedy
conferred on the Holders pursuant to the terms of the Series A Capital
Securities, or any action on the part of the Issuer granting indulgence or
extension of any kind;

     (d)    the voluntary or involuntary liquidation, dissolution, sale of any
collateral, receivership, insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization, arrangement, composition or readjustment of debt of,
or other similar proceedings affecting, the Issuer or any of the assets of the
Issuer;

     (e)    any invalidity of, or defect or deficiency in, the Series A Capital
Securities;

     (f)    the settlement or compromise of any obligation guaranteed hereby or
hereby incurred;

     (g)    the consummation of the Exchange Offer (subject to Section 7.1
hereof); or

     (h)    any other circumstance whatsoever that might otherwise constitute a
legal or equitable discharge or defense of a guarantor;

it being the intent of this Section 5.3 that the obligations of the Guarantor
with respect to the Guarantee Payments shall be absolute and unconditional under
any and all circumstances.

     There shall be no obligation of the Holders to give notice to, or obtain
consent of, the Guarantor with respect to the happening of any of the foregoing.

SECTION 5.4    Rights of Holders
               -----------------

     (a)    The Holders of a Majority in liquidation amount of the Series A
Capital Securities have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Capital Securities
Guarantee Trustee in respect of this Series A Capital Securities Guarantee or
exercising any trust 

                                      -12-
<PAGE>
 
or power conferred upon the Capital Securities Guarantee Trustee under this
Series A Capital Securities Guarantee.

     (b)    If the Capital Securities Guarantee Trustee fails to enforce such
Series A Capital Securities Guarantee, any Holder of Series A Capital Securities
may institute a legal proceeding directly against the Guarantor to enforce the
Capital Securities Guarantee Trustee's rights under this Series A Capital
Securities Guarantee, without first instituting a legal proceeding against the
Issuer, the Capital Securities Guarantee Trustee or any other person or entity.
The Guarantor waives any right or remedy to require that any action be brought
first against the Issuer or any other person or entity before proceeding
directly against the Guarantor.

SECTION 5.5    Guarantee of Payment
               --------------------

     This Series A Capital Securities Guarantee creates a guarantee of payment
and not of collection.

SECTION 5.6    Subrogation
               -----------

     The Guarantor shall be subrogated to all (if any) rights of the Holders of
Series A Capital Securities against the Issuer in respect of any amounts paid to
such Holders by the Guarantor under this Series A Capital Securities Guarantee;
                                                                               
provided, however, that the Guarantor shall not (except to the extent required
- --------  -------                                                             
by mandatory provisions of law) be entitled to enforce or exercise any right
that it may acquire by way of subrogation or any indemnity, reimbursement or
other agreement, in all cases as a result of payment under this Series A Capital
Securities Guarantee, if, at the time of any such payment, any amounts are due
and unpaid under this Series A Capital Securities Guarantee. If any amount shall
be paid to the Guarantor in violation of the preceding sentence, the Guarantor
agrees to hold such amount in trust for the Holders and to pay over such amount
to the Holders.

SECTION 5.7    Independent Obligations
               -----------------------

     The Guarantor acknowledges that its obligations hereunder are independent
of the obligations of the Issuer with respect to the Series A Capital Securities
and that the Guarantor shall be liable as principal and as debtor hereunder to
make Guarantee Payments pursuant to the terms of this Series A Capital
Securities Guarantee notwithstanding the occurrence of any event referred to in
subsections (a) through (h), inclusive, of Section 5.3 hereof.

                                  ARTICLE VI
                   LIMITATION OF TRANSACTIONS; SUBORDINATION

SECTION 6.1    Limitation of Transactions
               --------------------------

     So long as any Capital Securities remain outstanding, the Guarantor shall
not (i) declare or pay any dividends or distributions on, or redeem, purchase,
acquire, or make a liquidation payment with respect to, any of the Guarantor's
capital stock (which includes common and preferred stock) or (ii) make any
payment of principal, interest or premium, if any, on or repay or repurchase or
redeem any debt securities of the Guarantor (including any Other Debentures)
that rank pari passu with or junior in right of payment to the Debentures or
(iii) make any guarantee payments with respect to any guarantee by the Guarantor
of the debt securities of any subsidiary of the Guarantor (including Other
Guarantees) if such guarantee ranks pari passu or junior in right of payment to
the Debentures (other than (a) dividends or distributions in shares of, or
options, warrants, rights to subscribe for or purchase shares of, common stock
of the Guarantor, (b) any declaration of a dividend 

                                      -13-
<PAGE>
 
in connection with the implementation of a stockholder's rights plan, or the
issuance of stock under any such plan in the future, or the redemption or
repurchase of any such rights pursuant thereto, (c) payments under the Capital
Securities Guarantee, (d) as a result of a reclassification of the Guarantor's
capital stock or the exchange or the conversion of one class or series of the
Guarantor's capital stock for another class or series of the Guarantor's capital
stock, (e) the purchase of fractional interests in shares of the Guarantor's
capital stock pursuant to the conversion or exchange provisions of such capital
stock or the security being converted or exchanged, and (f) purchases of common
stock related to the issuance of common stock or rights under any of the
Guarantor's benefit plans for its directors, officers or employees or any of the
Guarantor's dividend reinvestment plans) if at such time (i) there shall have
occurred any event of which the Guarantor has actual knowledge that (a) is, or
with the giving of notice or the lapse of time, or both, would be, an Event of
Default and (b) in respect of which the Guarantor shall not have taken
reasonable steps to cure, (ii) if such Debentures are held by the Property
Trustee, the Guarantor shall be in default with respect to its payment of any
obligations under this Series A Capital Securities Guarantee or (iii) the
Guarantor shall have given notice of its election of the exercise of its right
to extend the interest payment period pursuant to Section 16.1 of the Indenture
and any such extension shall be continuing.

SECTION 6.2    Ranking
               -------

     This Series A Capital Securities Guarantee will constitute an unsecured
obligation of the Guarantor and will rank (i) subordinate and junior in right of
payment to Senior Indebtedness (as defined in the Indenture), to the same extent
and in the same manner that the Debentures are subordinated to Senior
Indebtedness pursuant to the Indenture (except as indicated below), it being
understood that the terms of Article XV of the Indenture shall apply to the
obligations of the Guarantor under this Series A Capital Securities Guarantee as
if (x) such Article XV were set forth herein in full and (y) such obligations
were substituted for the term "Securities" appearing in such Article XV, except
that with respect to Section 15.3 of the Indenture only, the term "Senior
Indebtedness" shall mean all liabilities of the Guarantor, whether or not for
money borrowed (other than obligations in respect of Other Guarantees), (ii)
pari passu with the most senior preferred or preference stock now or hereafter
issued by the Guarantor and with any Other Guarantee and any Other Common
Securities Guarantee and any guarantee now or hereafter entered into by the
Guarantor in respect of any preferred or preference stock of any Affiliate of
the Guarantor, and (iii) senior to the Guarantor's common stock.

                                  ARTICLE VII
                                  TERMINATION

SECTION 7.1    Termination
               -----------

     This Series A Capital Securities Guarantee shall terminate and be of no
further force and effect upon (i) full payment of the Redemption Price (as
defined in the Declaration) of all Series A Capital Securities, (ii) the
exchange of all Series A Capital Securities for Series B Capital Securities
pursuant to the Exchange Offer, or (iii) liquidation of the Issuer, the full
payment of the amounts payable in accordance with the Declaration or the
distribution of the Debentures to the Holders of all of the Series A Capital
Securities. Notwithstanding the foregoing, this Series A Capital Securities
Guarantee will continue to be effective or will be reinstated, as the case may
be, if at any time any Holder of Series A Capital Securities must restore
payment of any sums paid under the Series A Capital Securities or under this
Series A Capital Securities Guarantee.

                                      -14-
<PAGE>
 
                                 ARTICLE VIII
                                INDEMNIFICATION

SECTION 8.1    Exculpation
               -----------

     (a)    No Indemnified Person shall be liable, responsible or accountable in
damages or otherwise to the Guarantor or any Covered Person for any loss, damage
or claim incurred by reason of any act or omission performed or omitted by such
Indemnified Person in good faith in accordance with this Series A Capital
Securities Guarantee and in a manner that such Indemnified Person reasonably
believed to be within the scope of the authority conferred on such Indemnified
Person by this Series A Capital Securities Guarantee or by law, except that an
Indemnified Person shall be liable for any such loss, damage or claim incurred
by reason of such Indemnified Person's negligence or willful misconduct with
respect to such acts or omissions.

     (b)    An Indemnified Person shall be fully protected in relying in good
faith upon the records of the Guarantor and upon such information, opinions,
reports or statements presented to the Guarantor by any Person as to matters the
Indemnified Person reasonably believes are within such other Person's
professional or expert competence and who has been selected with reasonable care
by or on behalf of the Guarantor, including information, opinions, reports or
statements as to the value and amount of the assets, liabilities, profits,
losses, or any other facts pertinent to the existence and amount of assets from
which Distributions to Holders of Series A Capital Securities might properly be
paid.

SECTION 8.2    Indemnification
               ---------------

     The Guarantor agrees to indemnify each Indemnified Person for, and to hold
each Indemnified Person harmless against, any and all loss, liability, damage,
claim or expense incurred without negligence or bad faith on its part, arising
out of or in connection with the acceptance or administration of the trust or
trusts hereunder, including the costs and expenses (including reasonable legal
fees and expenses) of defending itself against, or investigating, any claim or
liability in connection with the exercise or performance of any of its powers or
duties hereunder. The obligation to indemnify as set forth in this Section 8.2
shall survive the termination of this Series A Capital Securities Guarantee.

                                  ARTICLE IX
                                 MISCELLANEOUS

SECTION 9.1    Successors and Assigns
               ----------------------

     All guarantees and agreements contained in this Series A Capital Securities
Guarantee shall bind the successors, assigns, receivers, trustees and
representatives of the Guarantor and shall inure to the benefit of the Holders
of the Series A Capital Securities then outstanding.

SECTION 9.2    Amendments
               ----------

     Except with respect to any changes that do not materially adversely affect
the rights of Holders (in which case no consent of Holders will be required),
this Series A Capital Securities Guarantee may only be amended with the prior
approval of the Holders of a Majority in liquidation amount of the Securities
(including the stated amount that would be paid on redemption, liquidation or
otherwise, plus accrued and unpaid Distributions to the date upon which the
voting percentages are determined). The provisions of Section 12.2 of the
Declaration with respect to meetings of Holders of the Securities apply to the
giving of such approval.

                                      -15-
<PAGE>
 
SECTION 9.3    Notices
               -------

     All notices provided for in this Series A Capital Securities Guarantee
shall be in writing, duly signed by the party giving such notice, and shall be
delivered, telecopied or mailed by first class mail, as follows:

     (a)    If given to the Issuer, in care of the Administrative Trustee at the
Issuer's mailing address set forth below (or such other address as the Issuer
may give notice of to the Capital Securities Guarantee Trustee and the Holders
of the Series A Capital Securities):

          BFC Capital Trust I                     
          c/o BancFirst Corporation               
          101 N. Broadway                         
          Oklahoma City, Oklahoma 73102           
          Attention: Randy P. Foraker             
                                                  
          Telecopy: (405) 270-1089                 

     (b)    If given to the Capital Securities Guarantee Trustee, at the Capital
Securities Guarantee Trustee's mailing address set forth below (or such other
address as the Capital Securities Guarantee Trustee may give notice of to the
Holders of the Series A Capital Securities):

          The Bank of New York                                    
          101 Barclay Street                                      
          Floor 21 West                                           
          New York, New York  10286                               
          Attention: Corporate Trust Administration               
                                                                  
          Telecopy: (212) 815-5915                                 

     (c)    If given to the Guarantor, at the Guarantor's mailing address set
forth below (or such other address as the Guarantor may give notice of to the
Capital Securities Guarantee Trustee and the Holders of the Series A Capital
Securities):

          BancFirst Corporation                                                 
          101 N. Broadway                                                       
          Oklahoma City, Oklahoma                                               
          Attention: David E. Rainbolt, President and Chief Executive Officer

          Telecopy:  (405) 270-1089

     (d)    If given to any Holder of Series A Capital Securities, at the
address set forth on the books and records of the Issuer.

     All such notices shall be deemed to have been given when received in
person, telecopied with receipt confirmed, or mailed by first class mail,
postage prepaid except that if a notice or other document is refused delivery or
cannot be delivered because of a changed address of which no notice was given,
such notice or other document shall be deemed to have been delivered on the date
of such refusal or inability to deliver.

                                      -16-
<PAGE>
 
SECTION 9.4    Exchange Offer
               --------------

     In the event an Exchange Offer Registration Statement (as defined in the
Registration Rights Agreement) becomes effective and the Issuer issues any
Series B Capital Securities in the Exchange Offer, the Guarantor will enter into
the Series B Capital Securities Guarantee, in substantially the same form as
this Series A Capital Securities Guarantee, with respect to the Series B Capital
Securities.

SECTION 9.5    Benefit
               -------

     This Series A Capital Securities Guarantee is solely for the benefit of the
Holders of the Series A Capital Securities and, subject to Section 3.1(a), is
not separately transferable from the Series A Capital Securities.

SECTION 9.6    Governing Law
               -------------

     THIS SERIES A CAPITAL SECURITIES GUARANTEE SHALL BE GOVERNED BY, AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD
TO CONFLICT OF LAW PRINCIPLES.

     THIS SERIES A CAPITAL SECURITIES GUARANTEE is executed as of the day and
year first above written.

                           BANCFIRST CORPORATION, as Guarantor


                           By:________________________________________
                             Joe T. Shockley, Jr.
                             Executive Vice President, Chief Financial Officer




                           THE BANK OF NEW YORK,
                           as Capital Securities Guarantee Trustee
                           


                           By:________________________________________
                           Name:______________________________________
                           Title:_____________________________________

                                      -17-


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