RE: Muffler bolt pattern chart?
OK, Good idea Sport!
I know that the LA40 muffler will fit a GMS .32and the Megatech/Mecoa.28. Most of the popular .46/50/53 engines have similar bolt patterns and can easily interchange. The FP10 and 15 use the same muffler and it has the same bolt spacing as the MECOA/Leo/Megatech 15. This will also fit the OS 10FSR.
Let's keep this going and make the chart Sport Pilot suggested.
ZB