Yes T-dubb, as Brian says, if I didn't say before, there seem to be a variation of hubs, all same on drive end, but plunger have the screw in bearing retainers both ends, where as Brian says the swing arm mods ('54-'55/6) only drive side and different spacer, and as I maybe said the R/H bearing 'floats' a bit more readily- maybe?,(it's what I've had in mine before I knew otherwise)
I could be wrong but the ~'65-'69 hub is also similar, but may? have a thread, or notches or both on the RHS to accommodate a speedo drive (hoping someone will verify?)
Otherwise don't really matter as I said the important bits is as I said, the other stuff is semantics,and important only for dead-set orignality.
Don't go thinkin' I some kind of expert, I've only discovered this by my own misdemeanor
Good luck sounds it's getting there, any dramas I happy to try and help
cheers for now, duTch