i made 260whp/180tq @ 7psi on a 57 trim drag kit on my stock gsr a couple years ago. car went 12.50@112ish in the 1/4..last year i had the same stock gsr motor with a 60 trim on 10 psi...never got it tuned but it ran like a raped ape and went [email protected] would geuss it was 300 or so whp. a stock gsr in healthy condition an take a good beating and run very well at the track. if you happen to want a healthy gsr swap......i happen to have one for sale!!! bone stock and never been boosted