8 3/4 questions

Yes and yes again....LOL I have a '68 B-body housing in my 68 A-body Barracuda. All I did was move the spring perches inboard 1/2" each side to be correct for the A-body mounting provisions...From center hole to center hole in the spring pads on an A-body is 43 inches. The B-body is 44 inches...And the term "posi" is a chevy word...The "correct mopar" term to use is "sure grip" :)