How many cars back in the day were actually ordered a certain way with X amount of options? Can't say as I remember seeing any AC cars that didn't have tint although obviously they exist
I would think that much like today the factory built the largest percentage however they wanted to send them out. Maybe automatically adding tint combined with AC. again...
Nowadays most people just pick something from a lot and go not realizing you can order and pay for only the items you want if your willing to wait about 6 weeks...