I have a 99 Si. To this day my car is stock except lowering springs. I plan on getting an exhaust for now. I am also looking into getting a Supercharger(Jackson Racing). I was hoping you guys could give me some tips on what to buy. What i mean is shit like CAI, header, new fuel injectors etc. Also what is a safe psi to run with stock internals? This will be a daily driver. I dont race very much, just want the extra speed for fun. Any info will be appreciated. Thanks:thumbup