I don't know much about it. I seem to recall it's from a late 70's F250. It's obviously from a leaf-sprung, single-rear-wheel 3/4-ton truck. I'm guessing it only has an open diff, no clue on gear ratio. 8 on 6.5 hubs. FREE to my So Cal Broncos brothers.
OK just let me know when you want to come and get it, with at least a couple hours notice in case I'm doing something. DM me your text/cell number and I'll return it with mine. Include your real name too please (Jmart52 does not ring a bell LOL).