man!! all this info and nobody mentioned colder plugs or a thermostat? I'm kinda ashamed that they weren't mentioned first. you'll need to go to AL 104s/103s or the equivalent and a colder 180* or 160* thermostat on top of all those things mentioned already
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98 GTP GMPP handling kit, HomemadeFWI, MSD coils, Taylor wires, 180 drilled tstat, TR6IX plugs, Intense STD PCM, JimmyC DP, Thrasher shift kit (mild setting), AGX/Intrigue spring setup, drilled/slotted rotors with Hawk HPS pads. Hopefully more to come