Asking a couple questions-will my A body corner?

Hey all, first post here in a while, but, I have reached the point to where I am sick of the useless 145 hp of the slant 6 and its almost a certainty that I will move up to a 360. I had considered selling the valiant and buying any number of other cars, most notably, a Mitsubishi Eclipse GT, a C4 Corvette, and a Jaguar XJS. None of these prove a viable route for me (Corvette looked promising but would probably be a bad idea), so I think I'll just make the Valiant better. I already know I need disc brakes and probably sway bars but I'm new to making these things handle. Can anyone provide pointers on which direction I should take and what I should get?