Unless I'm missing something here, what you are describing with the turbos attitude is spot on for a 12v with stock head and cam. Is there any reason you didn't want the new sxe turbo? Seems to me that would be the best route for what you're describing. I'm extremely happy with my 63mm turbo, and it's not even tapped out for air yet. Instead of throwing tons of air and fuel at it there's a better, albeit more time consuming route you should try. Port the head. Port the manifold and turbine housing. Ensure proper fuel supply. Go back to a smaller or stock delivery valve with those 5x16s. Run a decent but not excessive cam. Add some turbo and manifold blankets.Then throw on a 63 or 64.5 sxe and let her eat. You will be 10x happier with the results and make way more usable power than u currently have. Efficiency and proper parts combination trumps size unless you want all out perfomance and spend 100% of your time at full throttle.
My truck calculates to be around 450 hp and is a blast on the street. Haven't lost a challenge yet because it spools great off the line and also runs 99% smoke free 99% of the time. I have a goal of mod 500s and I can't see how any more power will benefit on the street. Sure you might win an all out drag race with days of brake boosting to spool and black out the nation just to be a second quicker but trust me, a second quicker on the quarter mile is not as much on the street as is seems on the track. Take the time to build a well oiled well calibrated well thought out synergetic machine. Everyone will be happier
rant off - just trying to help :thankyou2:
