In my brochure for 1965 it says Dart, which is the A body, and the Coronet and Coronet 440, which I assumed was the B-body, and then the Polara and 880, which is a clearly bigger car than a Coronet, and I assumed that was a C-body. But, the only thing I have checked is the Dart since that is what I have myself. The others I were just assuming what they were.
Bill