OOOOHHHHHH man all I can say is freaking awesome. I got two flowmaster super 40 in the 2 1/2" in/out and the magnaflow x-pipe. I deleted the rear most cat and had the exhaust pipes welded directly to the flange of the exhaust manifold. Then basically the same line as the stock exhaust. The sound is incredible, at 70 miles and hour it is stock sounding. There is a VERY little drone at 60 but about 63 it is GONE. I didn't lose any low end torque what so ever, after a few miles on this exhaust it is seeming a little more responsive. I recommend it to anyone. To tell you the truth I wish that it was a little louder. My wife is very picky about **** like this and she not once complained about the in cabin sound. She doesn't like the start up because it is loud. I scare her every time when she is putting our kids in and I start it up. I will post some sound clips and pics soon. Right now I am like the first day I bought this truck. If you are in Houston go to Lone Star muffler and Eric will hook you up. Tell him Scott Targac sent you.