I have an 04 Mach 1 that already has BBK long tubes and an X-pipe (just bought it 2 days ago and don't know the brand of the X-pipe). It also has the most horrible sounding Spintech mufflers that I hate and cannot stand. Going to the exhaust shop today and just want to replace the mufflers. Not sure what to get. I do not like the rattling/popping/coffee grinder noise the Spintechs make at 3,000+ RPM. My 01 GT had a full MAC catback system that sounded amazing and I want to replicate that sound without replacing the whole system in this car. Thanks for your help!!!