Blade-Breaker,
After seeing a friend at my field fly his Mojo with an OS46 on it, I thought about getting a Mojo 40, building it as light as I can, and putting my YS53 4-stroke on it.
I have to say that my friends plane did recently suffer a premature death while doing a high speed blender, but I'll have to admit, watching the airplane explode in mid air was probably the most violent death I've seen a model airplane suffer!!!. My friend even had to smile about it.
Good luck with your Mojo...