i have a 90 crx si with a built b16 . im looking to make 450 hp on stock sleeves. i have a pfab log manifold costum 3 in dp 2.25 intercooler pipin fromintake to intercooler and form the turbo too the other side of the intercooler in 2 in. i have a cheep 50 trim t3/t4 turbo for the mock up. im still runnin the stock rad. any pics or suggestions is greatly needed

 

There are a few turbos that would meet your goal, but which one you chose depends on what fuel you plan to run, the static compression of the engine, and your budget. Also, you're going to want to upgrade to 2.5" IC piping.

-T3/T04e 57 trim .63 ar (race gas will hit your goal)
-T3 60-1 .63 ar
-STC Silver Surfer
-GT3076r .63 ar
-BW S256/S258 .70 ar