Max motorsports CC plates. Don't even bother with something else. Then get some good shocks/struts, a good set of lower control arms (Steeda or MM here), nice wheel and tire setup and a tuner.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.