Here are some photos of the underside and the trans. It's an open drive line, but it looks like they cut off the connectors from the old shocks and just bolted on the new springs and rear end. It must have come with a shorter drive shaft which is why the wheels are too close to the fenders.
At this point I'm not sure if I want to strip the whole thing down and do a big V-8 conversion with a Mustang II front end and 4 link rear or just go with the '40 closed drive rear that I've found and stay with the 216 that seems to be running fine. It looks like I can but an all new bed, tailgate and wood bed floor for somewhere in the area of $2500 with all the mounting hardware. Decisions, decisions. I'm going to DMV on Monday to register it and drive it for a little while and see what I think (that means see what Mama thinks) LOL.