Which has more power and which type of plane would perform better. A Saito 120 and a OS Gemini 120 II? While the Gemini would not work in a Mustang, it may work well in a Corsair. My original thought was a 20CC gas, which I have, but it's a Warbird, and Warbirds don't go EEEEEHHHHpopopoeeeehhhh, they have a deep rumble.