I have a pair of 'Sakis and one runs and the other is junk.

Does anyone know if a KLF 185 engine will fit a 220? The 185 is a 1986. I have yet to find the vin plate on the 220 but I am betting the years are close.
Both LOOK very similar and are shaft drive. I would hate to tear things apart only to find it's an impossible swap.

Thanks for any help.