Thanks for all the help guys. I'm not getting headers so im getting a zzp ported PLOG to go with my zzp downpipe w/ cat. Just want to free up some exhaust flow for later on when i have enough add ons to put a 3.4" pully on. Well here, I have: WixAired CAI w/ 9" K&N cone, Autolite Platinum 104's plugs, 2.5" ZZP downpipe w/ Magnaflow HF cat, 180* tstat, and my brother owned a HP TUNER so he is going to tune my car for me a.s.a.p. I dont want to be like some of the NOOBS out there that basicly toss a 3.4" pully on a stock friggen engine and chip a piston. I might even go with a 3.5 if i can find one that not outa stock. What do you guys think? GO with 3.4" now or 3.5; or go with either with some more mods?