Re: Changing hub on prop
I am not sure about going from a Johnny to a Honda. Props are now standard across lots of brands, except they have unique hubs that are removeable.
If you look on this site, and pick out a prop(w/o a hub) for the Johnny, and then see if it will fit the Honda. If so, you can probably convert the prop from one to another with some work.
I converted a Mercruiser Prop to fit my V6 Johnny by drilling out some of the splined area. and grinding a Merc Thrust Washer to fit the Johnny Prop shaft.
You can repost this in the prop section. Those guys are pretty with it.