I have a Saleen body kit on my car and I'm looking for a professional catback system (i.e. Flowmasters, Mac Prochamber, etc.) that will fit my rear body kit and weld my existing Flowmaster mufflers to. I don't want a Saleen X-pipe because I don't like it's raspy sound, I like H-pipes. Does anyone know if I have any other alternative or should I just stick with my custom 2.5" catback.