How about this?

On a more serious note, I can't imagine using that on an airplane since it would be like adding canards to any design. I've always thought that the Jetsons muffler was intended for use on Hurrikans being used in boat models. This is the first time I've seen a that muffler actually on an engine, though. I saw it with it's box in a display case of German made model engines in the Modellflug section of the Deutsches Segelflugzeugmuseum at the top of the Wasserkupe in the Rhoen.