Saberjet Thanks for the information, I'll look into the Troybuild Tubes. Weather Turned on us past couple of weekends wind rain and cold. I haven't started the engine yet. I'll got a can muffler from Larry for the MT 57. But would have to cut a tunnel in the Frame to use it. Engine Parts came before the plane did. I see Tommy has a tune pipe for the 57 might have to call Larry up for one of those. If I stop playing around with it I might put in the air someday.