Oh yea, I've seen photos of the Katana 50 with a DLE 20, seems crazy but if you look at the box where it shows required equipment, it calls for a 14cc motor if your going to go gas, I still think a DLE 20 is a bit overkill, I looked at the RCGF 15 but decided I didn't want to mount a 30 ounce motor on it, plus they aren't quite as smooth as there nitro burning cousins.

I found a 90 sized Extra 330L I think you might like, I'll get you a link and post it here