Exhibit 10.2
  PURCHASE AGREEMENT
   
  Company Purchaser SCs Issuer Master Trust Agreement Terms Supplement Trust Agreement Master
Agreement Agreement to Purchase Excess Yield Agreement Offering Circular Offering Circular Supplement
   Purchase and Sale




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##### 



Pricing Letter
 Delivery and Payment Closing Date
 Representations and Warranties
 provided however
       2




---



##### 



1933 Act
     3




---



##### 



provided however
     4




---



##### 



Section 5
 Offering by Purchaser
 Agreements
   5




---



##### 



Conditions to the Obligations of the Purchaser
    Exhibit A-1 Exhibit A-2
   Indemnification and Contribution Section 4 Section 5(b)
  6




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##### 



1934 Act Section 3(b) (ii) (iii) (v) (vi) (viii), (ix) (x) (xi) provided provided however provided further
 Section 7(a)
 Section
7(a) 7(b)
  7




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##### 



Section 7(a) Section 7(b) provided
 Section 7 Section 7(a) Section 7(b)
 Section 7 Section 7(d) Section 7 Section
7(d)
  8




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##### 



Representations and Indemnities to Survive
 Notices nd
 Nonassignability
 Successors Section 10
 Governing Law
 Counterparts
   9




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##### 



Very truly yours,GMAC MORTGAGE, LLCBy:
    /s/ Thomas NearyName:
    Thomas NearyTitle:
    Executive Vice President  CERBERUS INTERNATIONAL, LTD.By:
    
    Partridge Hill Overseas Management, LLC,its investment managerBy:
    
    /s/ Jeffrey L. Lomasky

Jeffrey L. LomaskySenior Managing Director
  S-1




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##### 



SCHEDULE I
 Original NotionalCUSIP
    
    Principal Balance3128HU3T6
    
    $
    45,381,006.673128HU3U3
    
    $
    62,198,035.333128HU3V1
    
    $
    58,751,225.333128HU3W9
    
    $
    38,790,319.333128HU3Y5
    
    $
    45,946,848.673128HU3Z2
    
    $
    64,601,840.003128HU4A6
    
    $
    43,456,892.673128HU4B4
    
    $
    22,887,814.003128HUZ79
    
    $
    1,730,897.333128HU2D2
    
    $
    1,572,260.003128HU2L4
    
    $
    1,653,174.003128HU2T7
    
    $
    935,580.003128HU2Y6
    
    $
    942,400.673128HU3E9
    
    $
    2,281,090.003128HU3L3
    
    $
    1,445,996.673128HU3S8
    
    $
    1,531,280.00Totals
    
    $
    394,106,660.67
  Schedule I-1




---



##### 



EXHIBIT A-1
   A-1-1




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##### 



Mayer Brown LLPJuly 30, 2008
    
    1675 BroadwayNew York, New York 10019-5820Cerberus International, Ltd.First Commercial Centre
    
    Main Tel (212) 506-2500Second Floor, Suite No. 2, East Mall Drive
    
    Main Fax (212) 262-1910PO Box F-44656
    
    www.mayerbrown.comFreeport, GBI, Bahamas
 Freddie Mac Stripped Interest
Certificates, Series 256
  Seller SCs Purchase
Agreement
      A-1-2




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##### 



A-1-3




---



##### 



A-1-4




---



##### 



EXHIBIT A-2
   A-2-1




---



##### 



A-2-2




---



##### 



(a)
    
    I am admitted to practice in the State of Texas and the District of Columbia, and I render no
opinion herein as to matters involving the laws of any jurisdiction other than the State of
Texas and the District of Columbia and the Federal laws of the United States of America.
However, insofar as the opinions expressed in paragraphs 1 and 2 above relate to matters that
are governed by the laws of the State of Delaware, I am generally familiar with the laws of
the State of Delaware as they relate to the organization and governance of limited liability
companies, and I do not feel it necessary to consult with Delaware counsel. I do not express
any opinion with respect to the securities laws of any jurisdiction or any other matter not
specifically addressed above.
 (b)
    
    The opinions expressed above do not address any of the following legal issues: (i) Federal
securities laws and regulations administered by the Securities and Exchange
  A-2-3




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##### 



Commission, state Blue Sky laws and regulations, and laws and regulations relating to
commodity (and other) futures and indices and other similar instruments, (ii) pension and
employee benefit laws and regulations (e.g.,ERISA), (iii) Federal and state antitrust and
unfair competition laws and regulations, (iv) Federal and state laws and regulations
concerning filing and notice requirements (e.g., Hart-Scott-Rodino and Exon-Florio), (v) the
statutes and ordinances, administrative decisions and the rules and regulations of counties,
towns, municipalities and special political subdivisions (whether created or enabled through
legislative action at the Federal, state or regional level) and judicial decisions to the
extent that they deal with the foregoing, (vi) Federal and state tax laws and regulations,
(vii) Federal and state racketeering laws and regulations (e.g., RICO), (viii) Federal and
state labor laws and regulations, (ix) Federal and state bank regulatory laws, (x) Federal
and state laws, regulations and policies concerning (1) national and local emergency, (2)
possible judicial deference to acts of sovereign states, and (3) criminal and civil
forfeiture laws, and (xi) other Federal and state statutes of general application to the
extent they provide for criminal prosecution (e.g., mail fraud and wire fraud statutes).(c)
    
    In rendering the opinions above, I have only considered the applicability of statutes, rules,
and regulations that a lawyer in the State of Texas and the District of Columbia exercising
customary professional diligence would reasonably recognize as being directly applicable to
the Company, to the transaction contemplated by the Purchase Agreement, or both.
    Very truly yours,By:Name:
    
    Hu. A. BentonTitle:
    
    Associate Counsel
  A-2-4




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##### 



EXHIBIT B
GMAC Mortgage, LLC
Freddie Mac Stripped Interest Certificates, Series [ ]
 [           ], 200[    ]
 GMAC Mortgage, LLC
   Purchaser
 The SCs
 Classes
 Class
    
    Allocations
    
    
    Proceeds12345678910111213141516Totals
   B-1




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##### 



Sincerely,[PURCHASER]By:Name:Title:
  B-2




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##### 



Exhibit A
Settlement Statement
  B-3




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##### 



EXHIBIT C
    C-1




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##### 



Modeling
    Assumptions
    page S-7.
            Yield Table
      Prepayment, Yield and Suitability
    Considerations  Tabular Information in Supplements




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##### 



Pre-Tax
    Yields of All Classes
  Class

Assumed Price


5.0% CPR


10.0% CPR


15.0% CPR


20.0% CPR


25.0% CPR1


22.25
%


15.4
%


9.7
%


3.9
%


(2.2
)%


(8.4
)%2


22.25



15.3



9.6



3.7



(2.3
)


(8.5
)3


22.25



15.0



9.3



3.5



(2.5
)


(8.7
)4


22.25



15.3



9.6



3.7



(2.3
)


(8.5
)5


22.25



15.2



9.5



3.7



(2.3
)


(8.6
)6


22.25



15.1



9.4



3.6



(2.5
)


(8.7
)7


22.00



18.3



12.6



6.7



0.5



(5.8
)8


22.00



18.1



12.4



6.5



0.4



(5.9
)9


22.00



18.0



12.3



6.3



0.2



(6.0
)10


22.00



18.2



12.5



6.6



0.5



(5.8
)11


22.00



18.1



12.4



6.5



0.4



(5.9
)12


22.00



18.1



12.3



6.4



0.3



(6.0
)13


21.75



21.3



15.5



9.5



3.3



(3.1
)14


21.75



21.2



15.4



9.4



3.2



(3.2
)15


21.75



21.2



15.4



9.4



3.2



(3.2
)16


21.75



21.2



15.4



9.4



3.2



(3.1
)17


21.75



21.2



15.4



9.4



3.2



(3.1
)18


21.75



21.2



15.4



9.4



3.2



(3.2
)19


21.75



21.2



15.4



9.4



3.2



(3.2
)20


21.50



24.3



18.4



12.3



6.1



(0.4
)21


21.50



24.3



18.4



12.3



6.1



(0.4
)22


21.50



24.3



18.4



12.4



6.1



(0.4
)23


21.50



24.3



18.4



12.4



6.1



(0.4
)24


21.50



24.3



18.4



12.3



6.1



(0.4
)25


21.50



24.3



18.4



12.3



6.1



(0.4
)26


21.50



24.3



18.4



12.3



6.1



(0.4
)27


12.00



14.7



9.1



3.3



(2.7
)


(8.8
)28


12.00



14.5



8.9



3.1



(2.9
)


(9.0
)29


12.00



15.5



9.8



4.0



(2.0
)


(8.2
)30


12.00



14.7



9.1



3.3



(2.7
)


(8.9
)31


12.00



15.3



9.6



3.8



(2.2
)


(8.4
)32


12.50



18.8



13.1



7.2



1.1



(5.2
)33


12.50



18.2



12.5



6.6



0.5



(5.7
)34


12.50



18.6



12.8



6.9



0.9



(5.4
)35


12.50



18.4



12.7



6.8



0.7



(5.6
)36


12.50



18.6



12.8



6.9



0.9



(5.4
)37


12.50



18.4



12.6



6.7



0.7



(5.6
)38


13.00



22.7



16.9



10.9



4.7



(1.7
)39


13.00



22.1



16.3



10.3



4.2



(2.2
)40


13.00



23.3



17.4



11.4



5.2



(1.2
)41


13.00



22.5



16.6



10.6



4.5



(1.9
)42


13.00



23.2



17.4



11.4



5.2



(1.2
)43


13.00



22.5



16.6



10.6



4.5



(1.9
)44


13.50



26.2



20.2



14.2



7.9



1.445


13.50



26.5



20.6



14.5



8.2



1.746


13.50



27.1



21.1



15.0



8.7



2.247


13.50



28.2



22.2



16.1



9.8



3.248


13.50



28.0



22.0



15.8



9.5



3.049


13.50



27.4



21.4



15.3



9.0



2.550


22.25



15.3



9.6



3.8



(2.2
)


(8.5
)51


22.00



18.3



12.5



6.6



0.5



(5.8
)52


21.75



21.3



15.4



9.4



3.3



(3.1
)53


21.50



24.3



18.4



12.3



6.1



(0.4
)54


22.00



19.4



13.7



7.7



1.6



(4.8
)55


12.00



14.7



9.1



3.3



(2.7
)


(8.9
)56


12.50



18.6



12.8



6.9



0.9



(5.4
)57


13.00



22.6



16.8



10.8



4.6



(1.8
)58


13.50



26.7



20.7



14.6



8.3



1.859


12.50



20.4



14.6



8.7



2.5



(3.8
)   CERTAIN
    FEDERAL INCOME TAX CONSEQUENCES
  Certain Federal Income Tax
    Consequences  General,  Giant
    Certificates  Application of the Stripped Bond Rules  Strips




---



##### 



EXHIBIT D
  Covered Documents
 Offering Documents
 Purchaser Information
  D-1