The 8.8 and 7.5 rearends require their own gears. They are NOT interchangeable.
Those gears your friend found might even be from the old 8 inch rear Ford used to make.
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'82 GT 351W C-4,BBK headers,Carter 625 carb,Comp.Cam,Flowmaster exhaust.
1988 GT...T-5,bone stock
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