Dan, it looks like the Road Runner has a great home. I'm glad you are doing the work that it deserves. You're right, the paint is a 10 footer, it's not the correct Rallye Green anyway.
I spent hours searching for some kind of history on the car while trying to buy it myself. Never found any vintage photos or even mention of the original owner. You just have to assume what he said is correct but no documentation to back it up.
Dave