rear suspension for a 64 Catalina 2dr. HT

ok it's become painfuly clear that aftermarket support somewhere along the line forgot about the early 60's Catalinas as well as other Pontiac B bodies from that time, because besides Ames, there's pretty much nothing as far as suspension goes.

My question:
since a 64 Catalina utilizes the perimeter style frame would I be able to use suspension parts from a 65 chevy impala which also uses the same style of chasis? I figure this is a longshot but in any case, I've contacted "techs" at summit as well as  some well known suspension companies and they can't  even give me a straight yes or no.

if anyone can help point me in the right direction I would really apreciate it.

thanks- mark  

I have found a company called PMT fabrication which offer rear tubular rear control arms with adjustable uppers. check there site out. and as far as ive researched nothing from the 65 impala is the same.