This topic has been beat to death yes but im wondering what y'all have. Are there more with an x-pipe or h-pipe? It seems x-pipes are more common. Is an O/R prochamber just a catted h-pipe or what? that really confuses me. I know "X"s are the more raspy exotic sound and "H" are the most muscle sounding pipes. When you install an O/R h pipe it goes from the headers to the catback correct? or any midpipe for that matter. Where all did you buy your exhaust? I havent found many h pipes which is what im after(eventually) and yes, i am bored