Dick Hanson, a regular on RCU, did the 3D Flyer write up. He said it worked quite well. He detailed it in one of the threads here on this model; should be easy to find

In my limited experience with gasoline engines, I think that the ShowTime/Funtana/etc. genre of sporter airframes are a bit light for the increased vibration and weight of a gasser; even a small one. I have a ShowTime with an OS 1.08, and the only advantage I can see of fitting a gasser to this excellent model would be if one flew mainly gasoline-powered planes and didn't want to mess with lugging an extra fuel jug to the field.

But, that's me...