One good thing is they were also used for 67-69 383 Dart GTS's and Barracuda's also! There are two holes where a spacer bolts onto then the pivot ball stud bracket attaches. The 67-70 B-Body bell is different and only has one hole that the pivot ball stud screws into.

The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.

JB Rhinehart, Realist

A-Body's RULE!