I entered 4g63t vs. sr20det in google and I read some of them and for them 4g63t is still better because it can go 400-450hp without touching the internals while the SR20 can only go up to 350whp and after that internals should be touched because of the injectors and its turbos who cant handle HP like 4g does. And no other engine in the 2.0-2.4l engines is better than the 4G it can match up to the supra's 2jz engine and RB26 but then again RB26 as they say is the god of the engines.