hi ive purchaced a 80 malibu roller still has the interior. It came with a ford 9in and some extra parts etc. Im putting in a 598 with nos,turbo 400 with trans brake. ive talked to a few people about bullet proofing the rear suspension without tubbing it. I live in new jersey and looked at a few chassis places and they have all kinds of stuff like anti roll bars,control arms i already did front end with tubular upper and lower a-arms with coilover shocks any suggestions or anybody you can suggest to go to to get the rear suspension work done thx