Don't forget that Dodge also built full-size Darts In 61 & 62, also Mexican but ones and some other Dart compat cars, not including like the new one.
Keeping with the old ones, I say 3, 61-62, 63-66, 67-76. Those 3 generations were totally different cars, frames, body, roof, glass, etc. Yes, each class had some exterior changes but under the trim and and minor fender changes they were almost the same in the categories.
