We had a project a few years back where we were going to modify the Tiger II and electify it. I got some done on mine, but my friend and mentor (as well as my original instructor) got his finished. And, it came out really nice. It involved slightly lenthening the fuselage and removing a bay from the wing, thus shortening the wingspan. It flys likle a pattern plane and is very light. The truth be told, it is an amazing plane.