kz.....There's lots of info out there on the Nosen 310. I have one I haven't started building yet but plan on doing this winter yet.(yea,right!) I have a pic of a friends 310 that I will attach. He and his son each have one. One has OS120's on it and the other has G23's. They both prefer the 23's. It's a very good flying airplane. See "Twinmans" articles on how to fly a twin, they are very helpful.

The 26cc engines sound like Zenoah's and I think they were designed only a couple years ago so I wouldn't think they would be in bad shape unless they were terribly abused.

Good luck.....bipeguy