I have seen one with a 110 but I do not know what had been done to the airframe as far as mods.- I would glass the engine mount area just to make myself feel better.... Along with the center of the wing if it is not already done by the MFG.

Consequently, I think there SHOULD be a law against 2 strokes in Warbirds especially P-51's or similar, my brother had (RIP), a TF Gold edition P-51 done real nice with Robart retract mains, scale tail wheel etc. and he had a YS-120AC on it- It just sounded AWESOME!

So I guess the logical choice may be the YS-63FZ/S, but the 1.10 would make other warbirds at your field shrivel up...

Take care-