I can't find a picture to illustrate it but the 67 (along with the 67 Valiant) the window droops near the top, if you look at the car from the side you can see it. If you were to put a straight edge down the center on a 67 it will have a gap of like a inch near the top, in 68 this droop was removed. Keep in mind the frame is the same and the glass is interchangeable.
