New truck owner here. My 6.2LTZ Odometer just rolled 250 miles so I thought it was time for my first mod. Ive read alot of threads on exhausts and decided the best route for me was to replace the muffler. I bought a magnaflow 12909 and installed on my 6.2 last week and removed both flappers. My previous setup on my 08 6.0 Silverado was a bullet muffler and I did not want anything that loud. Im very pleased. Nice deep tone at idle, not super loud when cruising, sounds good at WOT and no drone. It does have a slight helicopter resonance on part throttle due to the DFM but its almost unnoticeable. There are vendors on ebay you can make an offer to. I offered $132 and it was accepted right off. One might be able to get it even cheaper. Normally Im a diy kinda guy but the local muffler shop was hurting for business with how everything is going currently so I decided to let them do it. $60 install and took about 30 minutes. They will have to install a small piece of pipe since the magnaflow overall length is less than stock. Hope this helps someone trying to decide.