I've been waiting for somebody to convert one of these, too. The thing does look like either Kioritz or Zenoah. I think the carb will be just like almost every weedie carb out there - uselessly small for making good power as RC engine. Swap to a big bore carb is easy, though.

For now, the Cub Kadet 25cc weedie is a surer bet, as it has the same shaft taper as zenoah, so conversion parts are easier to come by. Very similarly to the Toro in quality.