340 ,8 1/4 43" perch rear end and A904 wanted

I have a 8 1/4 that is 3:55 suregrip out of a A body, looks really nice, but missing brakes, would definitely get rid of, but shipping might be hard.
Ohh man that would be perfect. Will brakes off 7 1/4 bolt on ? Do you know if a 7 /14 yolk with fit the 8 1/4 ?