I use an air chisel with a drift attachment and drive it out. They actually come out quite easily unless of course they are swaged over to hold the drum to the hub like mother Mopar did.
To install the new one just slip it in from behind then use a nut and a stack of washers (or other suitable spacer) to pull the new one in.
You know what's going to happen don't you?
You are going to get fed up and get rid of the truck and the next guy will get another 14 years of trouble free service becuase you have already fixed everything that has worn out! ;)
