Building the ultimate Dana 44?

[4.3LXJ]

The Scout axles are within a half inch in width of the XJ axles, so the rear axle was very usable as is. However I decided I wanted to run larger tires, say like maybe 42". That would go along ways to making a good snow and mud machine, not to mention the rock gardens around here. So, there is work to do.
Attachment 14972

As you can see, it has drum brakes. I intend to upgrade these to disc brakes with more stopping power then the XJ or Scout rear brakes. Popped the diff cover off and found this


That is a trac lock that is so worn out I thought it was an open diff. Definitely going to have to upgrade that. And that 3.73 ring and pinion has to go too.