Quote Originally Posted by HiPSI
all depends on which blacktop you're talking about... all of the SR's have the same basic bottom end. red and blacktop S13 engines are basically the same other than what you mentioned. S14/15 blacktops got a variable timing setup, slightly different head design, and of course the larger turbos.
Yeah I was talking about s13 motors obviously becayse he's not buying an s14 or s15 motor with 1700 bucks.