The only thing other than an 8 3/4 or an 8 1/4 rear end out of an A-body that will bolt up would be a 9" out of a 57-59 Ford, it's a bolt in other than the drive shaft will need to be shortened. Some will tell you to use a B-body rear but that is the hack way of doing it, it also puts the leaf springs in a bind.
DO NOT try and use a Chevy rear, they're not as strong as an 8 3/4 or a 9" Ford and I don't think there is any that will bolt up anyway.
