I just got a set of the new Thrush 2 chamber mufflers for my '07 4.7L ram. Here is a sound clip, if anyone is interested in hearing them. It's a true dual 2.25" system with an X pipe and 3" tips.

Here is a new and better recording. 2.47 MB recorded while driving. Rather fast. That rattle at 50 seconds in is the recorder bouncing on the bumper when I left my driveway.

http://www.zshare.net/audio/10504498aa60d425/

 

Maybe, but I just went on a 400 mile highway trip tonight and averaged 22.0 MPG with a high of 23.4. Avg. speed of 55.29 MPH. That's about 1 MPG better than I was getting with straight pipes. It's nice and quiet inside the cab, but when you get on it you can hear it good.