brake help please

i haven't really boned up on that swap but i guess i'm curious as why you really want discs on the rear. mostly i think people do that for looks bec i don't think they're nessessary. good 10 or 11" drums are plenty good for rears on an A body except in extreme driving, imho.
if you want folks to see discs front and rear then go for it but they're probably overkill.