Damn freaking heat shield over the muffler came loose and rattled against the driveshaft. Never imagined a 22ga thick piece of sheet metal would make so much damn noise.Not only that I noticed the muffler has a few driveshaft marks. WTF would you design an exhaust to literally sit NEXT to the shaft?

 

I no longer have any heat shields on my exaust, they fell off one by one
the muffler only rubs the shaft under heavy loads
I fixed it by getting a cherry bomb with an adjustable hanger strap and jacking it up

 

Rebalance that drive shaft if it's a serious gouges.

 

when I got my exhaust custom bent, he moved everything away from the drive shaft