63~66 early or narrow bodies
67+ regular a's
but if you're specifically talking about barracudas, you can say 1st gen, 2nd gen & 3rd gen and somebody will know what you mean. and while i guess you could say the same about darts and valiants, i always just make the delineation of early and late and call it at that. And apparently you are in good company
wait, what were we talking about again? oh, that's right, some psychotic pedantical granular break down of the same body types. that's some serious eating soup with a fork behavior. In your mind maybe