RE: Evolution 26GX
I wouldn't see any problem with that, that rascal is such a mild plane that a little bit of extra power can make the plane cable of doing things never envisioned. I guy that used to fly with us had one and he would do knife edge passes and could actually hover it for short periods of time.
I wouldn't trade my little evo26 for any other motor in this size, it's been reliable, performs well, and suprisingly economical. I've got a 12 oz tank in my plane, can fly for 10-12 minutes and still have 1/3 of a tank left doing mild aerobatics with it. I think you'll really enjoy this engine.