If its a 4 door post sedan Dart (Pioneer, Seneca, or Phoenix), walk away. There are still a fair number to be found out there, and they aren't very expensive when they show up. If, its a 1960 Dodge Polara or Matador, its rare even if it's a a 4 door post sedan. If you can't find a better one and its a 60 Polara or Matador that you want, then it could be years before you find another one thats in better shape. But that also means replacement parts will be rare too, and this one could be worth grabbing to have as a parts car for when you find a better one.