put down 315rwhp... holy shit if i spent all that money and only got 315rwhp i would be fucking pissed and sell my z and buy a damn honda... My brother put down 334 with the same stuff just with 2.5" exhuast. So there is 2 cars right there.. that are right around 350rwhp also if you get a fuel controller and lean your mixture out you can gain lots of HP. Crap my brother gained 20-30rwhp by tunning or really close i dont have the dyno sheet infront but i belive he went from 308 to 332. This was on an extreamly hot day with hi humidity. and only 1 fan on the car. But i dont know alot about Z's i know enough.. but im going by personal experiance..