I know all the 68-72 Elco's had them. Not sure about the wagons, 4 doors or coupes. I have seen 68 coupes with them and without them. I am only interested in 68 to 72 right now.

ALL 1968 Chevelles had the wing windows (SS, Malibus, Hardtops, convertibles, etc)...

In 1969, the Hardtops and convertibles went to the one-piece door windows, but the posts, 4-doors, etc still used the wing windows...

I have seen 68 coupeswith them and without them.Not stock for 1968...