Very first mod is to do the "skip-shift" mod on the tranny. About 10 bucks for the switch on ebay. Second,get rid of that lousy factory shifter and install a BARTON. Third.. rear-end brace and the new carrier bearing setup from the same company, Per4Mance Development. Fourth.. larger wheels and tires will help with the wheelhop. I went 4 sizes larger on my Challenger 315/40s using Demon wheels.