Hi guys,
Does anyone know what kind of unit this is? I used to have it my Chevelle wagon. I put it in the 10 bolt rear with 3.08 gears but wasn't original to the car. A freebie that worked! I want to donate it to my friend's '67 C-10 project now that wagon is gone, but don't want to give him a piece of junk. You know, keep the positive Karma flowing.

If it needs to be, can it be rebuilt, are parts still available? Would it be better to just get an aftermarket posi?
Thanks