I have have many NIB OS61SF's, all ringed. All have the 7L. I think one of the used SF's mounted in a plane, has a 7D. That engine was NIB also. Would that 7D have came with the engine, or could it have been switched? It run's fine. I also have a VGC 7M, and forget where I got it. Can anyone give me the low-down on this "M" model?

David, thanks for starting this thread.

Vince