Flaps did you buy Alko Hubs? if so and they are the land rover ones you do need to knock the studs out and put in the 9/16's or what ever it is cant remember whether they were the short ones or the longer ones but Im sure someone will correct me if I'm wrong.
but whether you have steels or alloy the thread will still be the same :) unless your thinking of putting steels on to a non land rover hub

