I have a friend that has a 2 valve car with a fogger on it and bolt ons and he's making right at 400 rwhp and alot more tq on a safe tune and been running the car for years. I also had a n/a 4 valve car with just cams, ported short runner, built bottom end with long tubes and that car made over 400 rwhp just on motor and prob 600ish on nitrous. And I wouldn't count out a centri. Got a friend with one of those on his car (vortech) and it makes 450 I think and he didn't spend 5 grand. Just throwing out options. Gl with your build.
Yeah but then you are asking for problems running nitrous on stock block. And a 4 valve swap can't be cheap lol and vortech make decent power and aren't expensive just not a big fan of them don't know why lol
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