Factory disc brake rotor question

I don't have a definitive answer for you, but I doubt if the drum hubs would work. Are they from 9 or 10 inch drums?
I assume they look identical to you, since you're asking. Make darn sure all the critical measurements match, then look up the bearing and seal sets for each application and see if they match... you may get lucky, but I'd be skeptical.
The studs I wouldn't worry about- the rotor gets sandwiched between the head of the stud, and the knurling locks into the hub. It should slide through the rotor.