As Submikster asked: what kind of flying are you after? If you want a Mini-pattern plane a Tower Kaos and that engine would be a sweet model. If you want to throw something all around in maneuvers no real pilot could remain conscious through hook it on a Dazzler 40 and don't blink. If you want a fun aerobatic model a Great Planes Ultimate 40 Bipe with that engine would be a blast, but you're not going to do the "high alpha" 3-D stuff.

But you could always hook the wheels over a clothesline and do those without an engine.