The only thing that concerns me about this muffler is after some mileage the flap is going to get stuck open and then your going to have drone. My dealership was pointing me towards this muffler and one of the techs had it on his truck. Went for a ride. It sounded nice but wasn't the sound I was looking for. The best sounded muffler I heard was on my 09 Ram that I baught used and had an aftermarket muffler in it. It measured 12" and sounded Awsome but when I baught my 12 I could not find the same muffler so I went with magnaflow. The 12" muffler had no drone but my magnaflow does. Oh we'll. go with what you like that's why there are so many options out there everybody has their own tast in sound.