I have a 71 Challenger convertible with a small block and 518 trans. I have a new set of the old Edelbrock shocks I will be using. Will be running the Year One 17" aluminum rally wheels and a performance tire. Car is currently lowered 2 inches by torsion bar adjustment in the front and lowering blocks in the rear. What size/ brand torsion bar is the best compromise between handling and ride quality? I'd rather go too soft than have too much spring rate. Thanks for any advice in advance.