My oldest friend bought a 1968 Z28 Camaro from someone who worked with him at his uncle's Union 76 gas station in Los Angeles in 1970. I believe the Z28 was ordered from Harry Mann Chevrolet and was British Green with a black interior. The owner had modified the Z28 for road racing and had changed the camshaft, installed headers, with Goodyear F60-15 tires mounted on American Racing alloy wheels. As this was my friend's first car, he had the camshaft changed back to the original one as it was not suited for the street and the 4.56 gears were switched with someone who owned a 1969 Z28 which had a 4.10 rear end. Although I am quite certain that the Z28 was built at the Van Nuys Assembly Plant, neither of us ever looked at the data plate as back in those days no one paid attentions to such things.
My friend sold the Z28 for $1200 and bought a new 1973 Z28 Camaro, which had an automatic transmission and air conditioning. We both wonder what happened to the 1968 Z28!
My first real job out of college was at the GMAD Van Nuys Plant in 1978 and although I wasn't there when the first generation F-cars came off the assembly line, I was there for the second and third generation cars. Wish I could have bought my friend's 1968 Z28, but didn't have the money! - Mark