Well when I bought the car it had SLP longtubes, SLP un-catted X-pipe, and the loud mouth 1 cat back. The LM1 system is so loud that you cannot hear any blower whine til right before redline. AT around 2600 rpm the exhaust note would become very raspy. I like a little attention but this was ridiculous. So I ordered some SLP power-flo mufflers from americanmuscle.com with the discount probably the cheapest place you can find them. I installed them and now I am absolutely in love with the car once again. It screams top end and on top of that I can actually hear my supercharger around 3500 rpm to redline. I love them. The car had the modular exhaust system on it which means that it was clamped so you can switch between the mufflers and the resonators, so when you are at the track and want to make the person in the other lane ears bleed through them on, and then when you are driving around the street the mufflers don't draw nearly as much attention. This is especially helpful if cops around your neighborhood do sound testing..... I will post a sound clip of the car with the mufflers installed. By far that was the best $200 that I ever spent on my car. :rockon: