Scarebird isn't going to have the hubs. They recommend that you separate the drum
from the Hub and press in new studs.
Look at you hub/drum on the drum side, where the
studs come through. If they are still "swedged" together, that will need to be removed and the assembly will separate.
I've read using a 5/8 hole saw to cut the swedge.
I have scarebird brakes on the front of mine and it all works well together, just be sure to get quality calipers (Napa).