Whats up man. You can get 450 to 500 on the stock internals if you are careful and have a good place tune it. Actually, the SCT will work just fine if you get that. AGP will work with you and make sure that you are right at the line of performance without blowing up the motor. These guys are awesome to work with. A local just put GT3082 with 1000cc injectors and is looking to get 450 to 500hp out of them. He's still working out the tweaks, but that thing is huge. (Also may have beaten it by half a car length in a 3rd gear pull today, and I'm boosting 14psi on stock injectors and he was boosting 18 on those biggies

) Although, I would go with the BB 50 trim if you want serious power. Get that thing to 22 PSI on pump and call it a day. Should net you 400-450 with all the supporting mods and SCT tune.