Great find, my friend! Is the stripe on the car added seeing as you have a swinger? Many people would refinish the paint and keep it original unless there are issues I can't see. In case you didn't know the original exhaust manifolds for you car are quite valuable, much more than the headers on your car. It looks like you have a wonderful friend with vast mechanical knowledge. My concern is with the aftermarket intake and headers, your engine may be built to where it won't be happy with the original intake and exhaust. Just some observations to help keep you from making a mistake. Your car is already the envy of many!