Hello, and thank you for the information!
First, yes, I acquired the car you spotted on Craig's. With any luck, it will be arriving later this afternoon, and by next week, I may be able to answer a couple of the questions regarding #'s that have been presented.
Quite honestly, my mindset was to maintain the original body, but to modernize the chassis and drive train. However, in view of your estimation that I may have stumbled across one of a mere 15 +/- surviving Sport Coupes, well, that could be a game-changer....
In the event I decide to go with plan "A" I will have some parts of value available to someone restoring one of these cars to 100% original, such as yours - it is a beauty!
I wish the original radiator cap had come with mine, but to no avail.