Frame or chassis options for A bodies

I would respectfully like to point out the whole purpose of this thread is about what type of chassis or kits are avalible to improve handling, as the OP is wanting to build a "track car" and he was under the false assumption that a replacement chassis was needed. And i think it is about 100% clear to anyone reading these posts, the FASTEST track/roadrace/auto X cars are torsion bar/leaf equipped. Oh, and the guy who got outran by a 4 door B body is the same member who told us all how much faster his duster was once ditching all the factory parts and installing aftermarket stuff front and rear. Sucks to be him.