I don’t like ringed engines. I have the original parts should the Chinese/Japanese crap fail, though.

And really - the G51 isn’t anything special. The GS45 is a stronger engine in every sense - which I have a few of as well. If I had to choose one engine between a G51 and a GS45, I’d take the GS45. Then there’s the Como .51 ABC SCH which I have one of. I haven’t run it yet, but initial evaluations say it should be a good and strong runner as well. A little summertime nitro burn-off is in order I suspect.