svtcort,
i think you picked the wrong car to use as strictly a racecar...but to each his own. what type of racing? just straight line?
some stuff i can think of: catback, y-pipe, headers, open air intake filter, maf, thottle body, UDP, lightened flywheel, performance clutch, atb diff, performance chip, plugs and wires, 37mm butterfly manifold, intake manifold with w/seconary port opened up to match 37mm plates, supercharger, nitrous, poly front engine mount bushings, short throw shifter, mds ingition system...um, that's all i can think of...
you'd have to have pretty deep pockets to get all or most of the bolt-on's. if ya got no budget...geez, you can do whatever you want! have a new and better engine built! or buy a cosworth engine and drop that sucker in! or better yet, buy a real performance performance car!