Depends on whether the long bolts that pass through the pump and bracket into the block are willing to come out. When I did mine I found some previous repairer had broken the head off one of them at some time in the past, leaving the rest of the bolt seized solid in the bracket. Right battle.
I suggest you get new long bolts to have ready in case the old ones are damaged.
+1 on new bolts. If the gasket has gone its probably been on there a while, may be worth considering fitting a new pump at the same time (xmas pressy for the disco)