A 97" Kangke Monocoupe, the manufacturer recommends a RCS 140 turning an 18x6. It also states that it was tested with everything from a 90 glow to a 2.4 gas. The finished weight is about 12-14 lbs. according to the specs but I plan on having extra electronic goodies in mine so I'm thinking 15-16 lbs especially with a Zenoah. It has a flat-bottom airfoil and at 14 lbs around a 21 oz wing loading. The 2.4 (no brand mentioned) it was tested with was too much power running a 20/10 prop and had bad ground clearance. I have a G38 but the rear exhaust won't be happy without either a different muffler or having 1/4 of the firewall removed. Because of the extra electronics I was trying to get a smaller engine and use an isolation mount as well. I am seeking scale performance but short take-off rolls and landings even when loaded, that is, no problems when weighted down a little, which is why I chose this kit, lots of lift, LOTS of room, and small power requirements in its stock form.