The stock Mopar suspension is probably the best place to begin. You can make them handle great with a few simple things. Lowering the center of gravity of the car, using performance tires and wheels that are made to enhance handling. Having a performance alignment done by someone that knows what they are doing. I agree about the SS springs.....probably not the best for carving corners. I would look at some kinda single monoleaf fiberglass dealio. They are nice and work great. I think Firm Feel sells some torsion bars that will sit the car low and still retain good suspension characteristics. See what AutoXCuda says. I think it all depends on how much you want to depart from stock, but in all honesty, the stock suspension parts will go a LONG way.