The first thing we convert owners tell prospective buyers of these cars is 'check the floor supports.' Here is a great example of what we're talking about. This car looks pretty nice in the 20 foot pics, but check the underside photos. The floor supports have rusted away to the point frame connectors have been installed for safety. Check the pics where the doors are visible and note they don't fit properly, a sign the body is starting to flex under the lack of structural support. IMO, unless you have lots of restoration talent and/or money, you want to stay clear of any converts that are this far gone.