I took my '04 nissan titan in to have dual exhaust put on. I got several estimates from different places around town (Car X, BB Muffler, Goodyear) and they were all about 200 dollars more expensive than muffler king was to get a TRUE DUAL exhaust system (replacing the pipe from the cats back, with two separate mufflers) Vic, the owner, was the only one of the places I talked to that didnt talk to my like I knew nothing about exhaust. The job was done fast, and it looks great. My truck also sounds better than I could have ever hoped for it to, I had two flowmaster 40 series mufflers put on. Dont go anywhere else!