Just buy my Greddy T-88 H kit and you'll make more than 600rwhp and have no worries! The exhaust side of the turbo has been extrude honed for faster spool up. Manifold and downpipe have been heat wraped and coated. Full boost by 4500rpms. Kit has 400miles on it. I want a bigger turbo. I bought it for $4500
Selling it cheap, so it'll go fast. $2200 takes the whole kit. Includes Greddy 60mm wastegate, manifold, 4" dp, and turbo. (polished)

 

i been told no to put more than 16 psi on the t78 because the engine cannot suported i have a street ported rebuilt by petitracing,now i makin 400hp at the wheels thats about 460 at the flywheel let me know what ypu think

 

Who is gods name told you that?! Maybe on pump gas, but you can run 30 psi if you want on C16, so long as you have a good tuner and the fuel system to support it.