it will probably cost you just as much to adapt the GTO rear suspension into the nova when you could buy some top of the line stuff already tailored to your car. dse and speed tech i would say are the way to go having seen and heard such good things about each of them. if you wanna go the cheaper route, go leaf springs and all that. Get a hotchkis TVS system and take all the guess work out. they actually have a great nova article on their site with before and after pictures and numbers. they are great people over there having personally dealt with them before. Best of luck with your project, i cant wait to get my '70 nova on the road, so i can imagine how you feel.