noice. what u using the car for? drags i take it. theres a guy in the UK who sent his car over to NZ to RIPPS and they built him a 26/30 with a GT42R, last dyno was 585awhp on 18psi, 7200rpm limit (completely stock head). full boost was at 6200 w/o NOS, but 5750 with nos. ran a mid 10 with std box.
for now i'm running r34 turbo's, so i can make up my mind what i want to go for, track or drag so then i can go ahead with a turbo set-up and headwork selection. (if its drag, gotta be ready for hks mini-jam)