[glenn95gt]

This is what I did, and was not dissapointed:
Gears: 3:73's should run you $350 installed
Free flowing cat back: O/R H or X pipe(MACS are $119, plus cat back of your choice(MAC Cat Back is $299)
K&N Filter charger Kit, do not get a CAI, just get the K&N kit that utilizes your stock air tube. $80
Pullies if you want, some guys say no due to charging problems, I say go for it, and don't swap out the alternator pulley.
That leaves you with $150, you could possibly pick up some headers for that price. hope this helped. You will love the way your car feals after, trust me.