Ok, here's a long shot. I have a 1979 suzuki DS80. The muffler, at some point snapped off the intermediate pipe (which still exists along with the expansion pipe). I'm looking for any muffler that may be laying around in someone's shed that will suit it. It's very loud as you can imagine, the pipe diameter I'll double check but I'd be willing to consider anything close because I should be able to weld/modify it.