People make over 1000hp and run sub 10s with the standard throttles and plenum in place
Btw if your looking at putting a 26/30 into a 32 Gtr, you will find the clutch master will hit with a nismo plenum
Lets see if you can match my old typhoon of 1,000nm at the treads and i wouldn't worry about the hsv v8 I'd be trying to match/beat the new ford one! I havent driven one but all I keep getting told is that they are insane