1968 Dart GTS Convertible project

I am taking a wad of cash, my trailer, and a buddy tomorrow morning to go see the car. More than likely it will come home with me. I asked the owner for the build sheet, he said it did not have one. He said he has owned it for 15 years doing the resto slowly. He owns a restoration shop and is closing the doors and retiring. His asking price for the car and all the parts that go with it is $12000.