There are lots of write ups on the net, and the FSM details a lot of info. Unless someone links to a detailed write up here, anything that is posted simply leaves out MANY details that are important.

You ARE looking at a good power-lok clutch unit though, and you might want to contact Doctor Diff (Cass) cause he often sells them at very good prices (and has volumes of information). I remember him talking about a new power lock on the market that had a potential case hardening / cross-pin fit issue that you might want to avoid, but I don’t know if the Jegs unit falls in that category.