conver auto to manual hubs?

[chevycanada]

what is needed to do to convert from my stock auto hubs to a set of manual locking hubs. i blew mine the other day and i want to put in a set of warn premimus. do I just have to change the hubs or is there more to it?
thanks

 

[88streetblaze]

just have to pull out the old ones and put in the new ones, easy to do.........