Spanky and Jerry know a lot more about these trucks than I do but I would think that is a fairly rare truck. Plus its all there and in good shape judging from the pictures. If it were me, I would keep it together, maybe ditch the fuel tank if that's not what you want but the rest of it leave as is. Can't you apply for a replacement title or register and antique with a bill of sale? Love the daytons too. There is nothing wrong with them.
Good find.