My first thought was a 1965, but it could also be a 1966 with the view we have here. I've been meaning to pull out my photo collection and look at the minor differences and see if I can figure it out. It's 1964 for seat belts requirements here. We had two 1965 Pontiacs which came from the factory with four seat belts. Mom and Dad had two more added and that was long before Indiana had a seat belt law. Too many people depend on airbags to save them and drive like they just stole the car ... and with some of my neighbors ... that may be true! :-)