Yes, the British Invasion in Vermont. I've never been to it but have noticed that for some reason, the British car owners are nicer than the average bear. I've been to thousands of car shows and have noticed that each genre of car brings a different type of person to each one, from super nice people to outright snobs stuck in the 1980's who think their crappy corvette is the best car in the show.
Regarding the car location, its in Sullivan County New York, in a utilitarian country town where the residents of the area have no concept of interesting cars. Also at 51 years old, I hate to say that I don't have a garage to work in, so will end up working in foot deep snow like I've been doing for years. A nice big, new garage is hopefully in the future.
Regarding the build date, I don't know, I'm learning as I go, but here are the data plates for your decoding pleasure.