My exhaust guy couldn't believe how moving the muffler up made the exhaust quieter and got ride of the drone.
He said "it goes against the laws of physics" hahaha
But that sharp bend around the differential just reflects the sound waves back through the exhaust.
With stock muffler - drone
Aftermarket muffler - drone
MF muffler in back cat delete - alot of drone
MF muffler moved to where cats where at and got ride of that sharp bend - no drone