I bought a 4" MBRP exhaust kit for my truck and am having a hard time finding a good shop to install it. Pretty much all of them don't seem like they want to install it because they arn't going to make a lot of money on it seeing that I've already bought it. I've had some bad experiences at Lou's Custom Exhaust that have left some sour tastes in my mouth, so I'm not going there. Any suggestions? My buddy says Quality Muffler and Brake is the best around. Can anyone confirm or deny this?