The Thunder Tiger GP25 will be eneymic at best. Buy the looks of the plane I would go with and engine near the top or above the recommended. The Enya will do that, but that engine model is a little heavy especially for the weight as it has a cast iron piston. If you were to go with a 25 I would use something hot. I have seen guys with tuned pipes or mouse-cans for Norvel or Jet 25's. The Thunder Tiger Pro 36 or a light weight 40 like an LA would also be good. JM2C