I was going to put a Moki 210 in it, simply because it was so light (just over 8lbs bare), and i wanted to see if I could get in under 14lbs. Pretty light for a 1/3 size bipe. I had all the radio gear in it but hadn't installed the engine yet, when I sold it. The pilot that bought it installed a Fugi 64 I think. He reported that it was the best flying bipe he had ever had. He was happy, and that made me happy.