I am planning some intake and exhaust work to increase efficiency… so I can throw it away on an ultra quiet muffler. I know, most folks reading this are shaking their heads.

But I want it to be quiet, like drive past you in the dark with no lights and you think it’s a ghost quiet.

Any suggestions on quiet mufflers and exhaust systems? Already lining engine box.

Another thought… anyone out there converted to propane?