Broken rotor stud

[shor]

Hi all. I had one broken stud and I managed to break another stud this weekend from the front disc rotor. It is the two peice design(1969) and the new GM replacement appears to be a one peice design. The rotor,other than surface rust and two broken studs, appears to be in great condition. It doesn't appear to have ever been cut and is really a low mileage rotor. Can these things be repaired? old studs removed and new ones pressed in?
Would it then have to be balanced? Any recomendations??Thanks