You also just can't "expect" to run "X" pulley because you have "Y" mods.
Injectors will most likely run out of headroom (static) around the 3.1" range anyways...keep that in mind.
With just a XP~S1X~VS/headers/tune, don't expect much more than a 3.2~" anyways IMO.
I loved my XP, I also went to the Thrasher for the noise and the top end pull. It was also very proven when Chris Green slapped a TEP Cam, S2IC, Headers, and a 2.8" on there with injectors and whatever tuning software they had back in '02...guessing DHP PT and went 12.1x @ 110+ on street tires and a stock trans/heads/block minus the cam/springs. I however do not recommend it, especially if you don't have another car to drive...I broke mounts, sheered off A/C bracket bolts, and busted the welds on my headers...it also had poly mounts all around as well and a brutally built race trans.
