New YS 140FZ sport engine

[Steve & Cindy Kessler]

I have an older Storm pattern plane that had a YS120AC in it.  I am considering the new YS 140FZ sport engine for this plane.  How does the power compare to either the YS120AC or the YS140L engines?  I would also use the engine in a Hangar 9 P-51 Mustang ARF for our club's war bird races.
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