DTM ... your observation is most true, Sebart makes hybrids ... Fliton does the same but I have to say some do not hold up well in stock form if you run a 4C engine on it. I look at my Sebart Angel 50 and I really wonder of she will survive a 4C engine. I think 2C engines are not much of an issue. The weak part, if any, is usually the firewall and the engine mounting box.

Mr Cox ... I gave my little OK Models Ultimate to a pal ... he put a 25 sized MVVS engine with a mini pipe on her! She flew as nice as EP ...