I have the cat back single exhaust for my 2013 Ram 2500. The drone at some RPMS is unbearable in the cab. The exhaust is made of stainless but must be low grade because it looks to be in really bad shape for only two years old. I have louder than stock exhaust on all my vehicles except my wife's van so I do have some experience. I have finally had enough and after the weather breaks will be putting the stock exhaust back on until I can find something that sounds better.

YMMV.