Your '70 318 B-body *should*(you never know) have the '741'-series 8-3/4. If the C-body rear is an 8-3/4" (which it should be) you can at least use the center section. It will *probably* be an open diff with freeway gears, but should be the beefier 742 version. The housing is too wide and the spring perches are in the wrong location for your B, but as was said the C-body guys will snatch that stuff up. The large-pinion cases are getting expensive.
Thanks, I am picking up the Coronet this saturday, not sure if i want to do a 440 swap or just wake up the 318, but don't want to miss the opportunity for a 440. I will post some pictures to the forum once i get her home,
