RE: GP Waco?
I have a DLE 20 /Jtech muffler cessna 195 style muffler on mine. It all fits really good. It flys the Waco with plenty of power. You will like it. Jtech makes an Aero Works Cessna 195 muffler for a Dle 30, so I called Jtech and he made some for the Dle 20 same style. A very good fit for the Waco.
Thanks,