67 wing/vent windows One year only?

Ok, so before I go on the hunt for these wing windows, I need to know if they are one year only. I have a 67 barracuda FB and for the life of me cannot find my wing windows. I believe I have the regulators and only need the wings with the front slide attached. I hate losing things. The car came in boxes so maybe I never brought them home. Silly rabbit.

Thanks FABO!