You might be happy with a SuperTigre 45, or the next size up, 51 or 55, but the larger one would likely overpower the model. I put a Magnum 52 4stroke on one, and get about 20 - 25 minute flights on the stock fuel tank. It's not fast, but it is a trainer, and it flies very nicely with it. You can prop it down in diameter and up in pitch with the Evolution on it to try and get more speed, but you have 8 - 10 rubber bands holding the wing on, and it will make funny noises when you begin to approach the speed that will cause the wing to lift off the fuselage. (If you hear something that sounds like someone rapidly slapping an inflated paper bag, that's your sign to slow down, before the wing lifts off, on its' own). I turned one into a taildragger and took the dihedral out of the wing and use it as an "advanced sport trainer". It takes some severe abuse, but has done a lot for me even now. When the weather may be to crappy for most of my other planes, I use this one as a test to see whether it is flyable out.

http://www.rcuniverse.com/forum/m_21...dragger/tm.htm

This post is only 2 pages long, but there is some good stuff in it about converting a trike to a taildragger.