Yes, it is the Dana 44. To add to the mishap the X hit a large rock that damaged the tire causing a large bulge. Having ridden the truck previously I know that those tires can take a heck of a beating and not show any marking / damage. The rock(s) he hit may have snapped the axle - not a good thing.

Dave will be tearing into it soon and will let us know what gave.

I too have some pix that I will post tonight.