If it is the 120 size, I would second the recommendation for the OS 140RX. I currently fly a BlackMagic V2, 2 meter plane and it is very reliable withmore than enough power for a 10.5 pound plane and theAMA patterns. Start it, don't even have to run it up, and take off. However, with theES carbon pipe, it takes a very long pipe tunnel. I had to extend the pipe tunnel on the black magic by 8". The proir owner had a YS 160 with pipe installed. Headers are available fromMacs. It runs very well inverted as well. Good luck.

Energyman