Crap my post got erased. I have to type it in again. I did some research on the muffler issue and I found out that I have a modified Bisson muffler. Not sure exactly which one but the measurements are very close to the ZDZ50 muffler they make. It's modified because the outside corner has been cut off and a flat piece welded on. The thing I don't understand is my current measurements are larger than the J&A measurments listed on their web page for the 2.7 bme. I didn't see anything for the 3.0 on their web page. Am I missing something here?