Found: GMC Deuce and a half (M135) Muffler

[Grant Bowker]

Originally Posted by rob love

The design of the M135 exhaust system is such that any rainfall will accumulate in the muffler, and after almost 30 years of sitting, my muffler has succumbed to the elements.

My "quick and dirty" solution was to keep a tin can over the pipe (although I had the curved top end on the pipe) to keep out rain. Every so often I had to look for a new tin when I started the truck, blew the tin off and drove over it before I rememberd to pick it up.
Many years ago, I exchanged some mufflers and exhaust parts to Brian Asbury - I have no idea if he still has them or other exhaust parts for the M-135 series.