I digress, this site here explains it all.
http://www.discounttire.com/dtcs/tir...991&vid=007430
As far as performance parts, you can get a K & N filter for about $40, plus get a cold-air induction system, throttle body spacer and a larger throttle body. I'm not sure about intake or exhausts, but I know they have items for the induction system. Take into consideration that if you get a larger rim & tire, you'll compromise your handling and steering geometry greatly b/c of the increased rolling mass. You won't be able to take a bump at 10 MPH w/ normal tires as you would w/ custom tires at the same speed, you'll end up bending the rims and possibly cutting a tire in the process, a very expensive mistake.