i also have a bassani x (w/ high flows) on MAC LTs... Its not that raspy, and i have muffler deletes on.. It sounds like perfect.. I use to have an o/r h it was a lot deeper and muscler but if you want one with cats, then whats the point lol your car comes stock with an H pipe... X pipes also will help you out in the higher end, it allows for a better flow.