QTP High Velocity LS1 Race Headers (No emmisions) go for about $750, good quality stuff! After you complete the exhaust system your next best thing would to go out and get the car tuned! You'll be pretty satisfied after that. I wouldnt really mess with the FAST 90/90. As for suspension you can't go wrong with a SLP package of Bilstien Shocks & Eibach Pro-Kit!
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