RE: GP Waco?
Dave, You right on that JTEC muffler, that is it. He is pretty proud of those. I paid about $120. + shipping for mine which was the first one he made for the DLE 20. I thought it was a little steep but I really liked it for my application in the waco. 1/2 the cost of the whole engine, wow. Guess it cost $$$$$ to have all this fun.