8 3/4 questions

All A-body 8 3/4 are 51.4" flange to flange and 43.0" centering pin to centering pin on the perch.

1962-1970 B-body 8 3/4 are 55.0" flange to flange and 44.0" perch to perch.

71-74 B-body 8 3/4 are 57.8" flange to flange and 47.3 perch to perch.

All E-body 56.5 fange to flange and 46.0" perch to perch.

C-body? I am not sure I do know that they are bigger even yet.

I have put a b-body rear in a Dart and Duster. I have just put an ebody 8 3/4 in my 74 Duster. Relocating the spring perches is necessary to install these rears. No axle tube cutting is required. Of course the right offset wheel is needed.