i have 2 spare OEM axles in my garage right now that need a home! lol.
One isn't very pretty and the other is okay. been awhile since i looked at them.
Not sure about the OEM MM size.
I have a few sprocket hubs including 1 that i got from a member here that assured me the splines were tight. They weren't.
Anyway, my plan is to buy a new swinger once i get moved to my new house and go with the banshee rear end.