So i think im going to upgrade to a bigger turbo to accomplish my 600rwp+ goal. I will be full bridging my motor, have 1000cc primary and 1600cc secondary with 2 fuel pumps. The 2 turbos i have decided between are the GT42(not R) and the Turbonetics T72. The T72 is a T4 with a 4" vband exit and a 1.00 a/r. Im more concerned about top end, than spool time. I was just wondering if anyone has feedback on the T72 or the GT42?

 

Gtk1000!!!!