I am selling a 1984 jaguar xj6. The driver door does not open, the sunroof doesn't open, one light is out, the horn doesn't work, needs new tires and the leather on the seat needs replacing because the car has been sitting unused for a year. Everything else on the car is in good, everything under the hood is in great condition and the exterior looks as if there's nothing wrong with the car at all, car drives perfectly fine. How much is it worth??