It is hard to gauge a price without a photo of the car, but if it was done professionally and looks exceptionally nice, then it'd be safe to expect to either pay for or sell a similar car for between $18,000-$20,000.00. I'm making this assumption based off just how much I have into my '73 Challenger project right now. (close to $10,000 and that was with an original purchase price of $1,750 and not really too bad rust-wise.)