new to the forums and new to gtp's.
so its a 2002 gtp. current mods are 2.5 inch exhaust from the ubend delete back, 9 inch open cone, alt rewire, stage one voltage booster, flipped dogbones, 180 drilled tstat.
i'd like to reliably run no more then a 3.4 pulley at most, so i know i still need to install some headers and colder plugs should i be installing anything else? i'm just waiting for overkill to email back a day to go get a flash done and i'll be doing a street tune with will once i've pullied down and headers are installed.
not looking to purchase and install headers until the fall as i currently have a mazda mx3 track car that we are knee deep in overhauling and prepping for track season.
