I'm using a TT 46 on mine with a tuned pipe.... When I rebuild it, I'm going to try a mousse can muffler to try to even out the midrange a bit. I've heard of guys using OS 32's on these and even a hot 40 on a pipe.....
I used two aileron servo's in mine so I could do flaperon's.
My wasp:
More Wasp Pictures
Make sure to go light on everything you use...
If you need any help or some detail shots of anything, let me know.