Much better tires. Larger torsion bars to deal with the better tires and make up for the factory undersprung issue. Chassis and K frame stiffening those cars didn’t have. Slightly lower ride height to improve the CG. Better shocks, I think I forgot to mention those in my last post.
It’s not pro-touring for sure, but it will handle loads better than factory. Including the factory 340 and big block cars, which were still undersprung for their weight, had bias ply tires, and didn’t have any steering box gusseting or subframe connectors.
15’s would be better, you could run 11.75” rotors and 11” drums in the back. Pick up a couple more tire options.
