I too, love Zenoah's, but they really aren't for the airframe that the OP asked about for his quesitons. IMHO, Zenoah's and DA's are the best out there for reliabiltiy and performance, and customer support, should you need it from them. I have owned BME's, Zenoah, ZDZ, DA, and worked on just about all of the Chinese junk that my students have bought, one even had a Robi conversion that really never produced power. There is a little .17 Chinese gas engine that is being sold on the Bay and other places! Pure junk, had one student get one of those...it now sits in the closet as a boat anchor. It never ran right, or produced power, no matter how long he and I worked with it. AND NO customer support!!! I go to the field to fly, not to tinker with junk. As I have said before, I am a turbine CD/gas Instructor that is tired of messing with the junk that shows up, because of guys trying to save a hundred or two here and there. Good Luck!
PS- I have an Italian Student that bought one of the new Mintor .38's. Beautiful designed engine. During break in, and yes we were running it very rich, the inside of the crank, and piston started to come apart. After only 10-12 flights, the engine is back at Top Dawg Aviation for repairs. Now, the Student did find out that it was in the production of the engine, and Mintor had issues with the .33 and .38's. But, it is considered an off brand here in the USA. He bought it, because he is Italian. Enough said. I have another student that we just started his Evo-.45....so far, so good! But, another student had an Evo-.26 or .35 and the magnet was bad on the sensor...never had that happen before, but now I have seen it.