Are these swedged or not? help

I would carefully take it off the shoulder of the studs rather than enlarge the holes in the new rotors.If you **** up the studs they are easily replaced .Actually you could just press them out of the hubs and turn them down in the area where you need them to be reduced in a lathe easily then press them back in or just work with new studs. Pressing studs in is a simple thing and they are cheap