Some ? about my 8 3/4

I have a 8 3/4 rear end out of an A100.I needs to be narrowed and I found a place to do it.I was going to get new axles from moser with the green bearing.What drum brakes can I run on it and when I get the money what disc brakes can I run on it.Also its a 3.55 gear non-suregrip can I make it a sure grip with a locker.