I just purchased the Hobbico NexStar ARF kit and put it together. I am at the point of needed to choose an engine for this plane. I know the Nexstar Select RTF comes with an OS 46 FXi, but they are hard to find.

What other engines can I use that will allow me to use the stock engine mount that comes with the ARF kit? I own a OS 46 LA and it doesn't fit at all.