Wanted INFO on putting a b body rear axle 8 3/4 in a E body

[74chally]

I am working on a 1974 Challenger and need more room for a 15x10 wheel with 5 inches of backspacing. How much will gain from putting a B body rear axle in it? Any certain year a better fit? Thanks Sean in Mn.

 

[70CUDA4SPEED]

With a 68-70 you will gain 3/4" on each side, 66-67 you will gain 1" on each side. This is only the total length, brackets are same on both C/C 44"

 

[Moparparts]

I have a 68-70 B-Body housing and axles if interested PM me.