There'* also a lot of quick, easy mods to tackle: 180* T-stat, colder plugs, fenderwell intake and a smaller pulley. SCAN your car first though to be sure everything is up to par and that you've got no KR. If you have some decent experience, a set of higher ratio rocker arms would be good. I'd probably suggest a shift kit at least for the trans.
Check out the Techinfo link at the top of the page too. Do you have all the basic tune-up items taken car of first?
By the way, do you have a budget in mind? That'll give us a good idea of how far you can go.