I havent seen the specs on it yet, since all I saw was the prototype they had at the show, but if the actual ARF is as good as the prototype it will be an exceptional plane. I have many choices of power that I can use, from a Power25 Eflite setup to a Saito 100 4Stroke. I might put the 91 on the Cub and use the 70 instead. A 91 on a Clipped wing Cub would be a stunt performer for sure. I would prop it for power, not speed, hang it off its prop!