All of that is useless on track without upgrading the brakes, I wrote an essay about the two things this car absolutely needs yesterday. Intake/exhaust 'upgrades' will be absolutely insignificant to lap times vs. upgrading tires, brakes and alignment.
http://www.ft86club.com/forums/showp...5&postcount=12
Edit: I think it's worth tracking with stock rubber and suspension once to understand the baseline and learn how the car behaves even for the more experienced, but you will need tack pads if you're comfortable at all with braking on the limit.