I had about 5-6000 mi on my Flowmaster. The shop cut it off and put on the AT for $40. They said they they gave me credit for letting them keep the old muffler. They even had to do some plumbing putting a bent pipe in there. With this economy they get people wanting performance mufflers but not wanting or having the money to pay. So they resell them a used muffler.

 

The 3030XL is resonated and the 3030 is not resonated