Recommendation Exhaustpot: Which one?/Where to buy?

Hello people I need your help regarding an exhaust pot for my 99`Tahoe! Short history: I built a very simple (it was really a mistake) new exhaust pot under it. After the exhaust pot still has to have an arc over the axle and then a piece until the end of the vehicle. When I installed the pot, I then drove around for a while only so that the entire exhaust pipe (exhaust pipe) stopped exactly above the axle. There was also the sound still OK! I don’t want it too loud and disturbing, but pleasantly roaring. But since I can’t drive around so much time, I still had to extend the exhaust pipe until the end of the Tahoe. The problem that I have now is that almost the whole sound has disappeared!!! It almost sounds like I didn’t even have a new pot built in, but left everything original? That’s very annoying! Question: Since I’ve made a very simple universal pot under it, I could help without a problem to change this with a good exhaust pipe!!!