I have never installed the part time parts but it appears that it uses the same stock bearings. Take a look at this article to get an idea of how it's installed. I have a parts list somewhere for the Milemarker hubs, I think it's on my other computer that I have disconnected..I'll look. Also look in the How-to's for the front end bearing change.
http://custom4x4.tripod.com/milemarker_kit.htm
http://custom4x4.tripod.com/milemarker_kit.htm