Mike, before you cut that second cowl, I wonder if we can find a muffler that will allow us to mount the engine inverted @ 6 o'clock and not have to cut the cowl at all? I am going to start looking. Thanks for those pics. I'll post my search results.

Here is a link to Bisson's inverted pitts muffler for $39
http://www.bissonmufflers.com/en/muf...ing_id=1019600

Think this will work?