An SCT Xcal2 or Diablo Sport Predator tuner should be the first on your list. All mods will require a tune. You can get one preloaded with performance tunes that only require higher grades of fuel. From there I would remove the carbon trap in the intake tube and add a K&N replacement air filter this with a 93 octane performance tune can get you very close to 300 rwhp. Most stock GT are running around 262 to 283 rwhp. then you can play games with all the other little mods like smaller pullies, bigger maf, cold air intake, exhaust.... or do like me and go with a blower!!
