Calls for up to 60CC engine. The Fugi 63 would not be over powered at all to me. My friend with the G62 is very happy with his. The friend with the 40CC engine is getting a G62. If you want it to be aerobatic at all I would go with the lager engine. It's going to be almost a 20 lb airplane by the time you get it done so you'll need all the power you can get.
ORIGINAL: Spinner2
Thanks for the suggestion, but isn't a 63 a little overkill. This size engine exceeds manufacturers specs.