You're spot on Joe. In one pic you can see the axle housing from the rear, and it looks like a 9 inch, but the axle ends are clearly 28-spline.
I can't figure how the economics of this car add up. It looks like it would go north of 60k to get the cosmetic restoration done right, then the mechanical is going to be another 20k. The car, perfectly restored, would probably not bring over 100k, so there's not much room for profit. Perhaps as a labor of love, which is fine. I don't see that any of the "restoration" that has been done would be good to go. Would be a total strip down and rotisserie project. Every bit of chrome and potmetal is deeply corroded.