Thanks for the advice guys, it's all been great. What I'll do is pull the body from the frame and get the frame sonic tested. It's only about $80 or so from a shop down here. If all is well I will use the original frame and box it add a new rear and probably some air ride.

If not I will go the new chassis way. FYI your right ron, the car is pretty rust free. Last time it was tagged was 62, shortly after it was parked in a barn/ storage area and I found it asking about some 4x4 parts for my truck. Picked it up for $250.