unfortunately, there is no way to make a 4cyl fast without spending some serious $$$$. IMHO your money would be best spent on suspension upgrades. spending ~$350 on tokico(or KYB)struts and $200 on some eibachs would do more for your car than spending and equal amout on a cai other stuff.
as far as headlights go check out ebay. i dont kno about the '01 conversion.
edit: at some point upgrading your wheel/tire combo would be cool.(i just looked at your posted pic and those 14inchers may look rough if you decide to lower it.) looks like a nice car to mod!
my 420th post

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