I have a Dana 44 sitting in my pole building. Mine is a posi with 3.54 gearing. It came out of a 60's Suburban. I don't know how you can tell by just looking at it, if it's a posi or not, but if you take the cover off, or maybe jack up the rear end, and spin one wheel, both should rotate in the same direction. I may be wrong, so you might not want to listen to me.
