no offense, but a wrx's do not care for CAIs. The stock air box is good for pretty big numbers(350whp), just change the panel filter. as far as the front mount goes, i don't think it is needed on a stock turbo wrx, or sti for that matter. i think a 20g is about the border line of a big tmic and a fmic. just my opinion of course.Originally Posted by Autofab