I didn't get my MT back //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gifProbably because I have never had one, though...
Either 2.25" or 2.75", I would guess. Either bigger or smaller to allow for the exhause pipe to fit into/over the opening...
I don't know what sizes mufflers come in having not purchased one in many, many years. My car's muffler doesn't need replacing and the truck that I have use of which belongs to my housemate has no mufflers at all.
I still am not quite accustomed (even after as long as she and I have been together) coming inside from a 90 degree+ day and then hearing the wife tell me how cold it is there...