This kid is willing to trade me a t3/4 turbo for subs that i do not use. i have a 2003 wrx, the only mod i really have is a catback and a bov, will this t3/4 turbo make a difference and will it even fit in my car? if so do i need to upgrade some parts inorder to run this t3/4 without blowing anything in my engine or tranny? and is the t3/4 bigger then the 16g? thanks!!