Are you sure that it is a 1956 Ford F-100 Truck cab, if it really so, then have you gone completely insane? Do you have any idea how much it costs. You should be an idiot to sell a vintage collection material this cheap. And a word of advice, do a little paint work and one or two wax polish and you should easily get two times more what you are asking now. I really hope you won’t sell it cheap.