67-69 barracuda door glass

Did you check the link? Look at the 1st pic, there is a white plastic piece on the lower left hand corner of the glass.
Do you or your buddy have a parts manual? Compare the parts numbers.
Why wont a 68 regulator and 68 window work in a 67-9 door?
I don't know. That's why I am asking. He is the one that wants the glass from a 69. I have 67 and 68 glass. I am merely trying to find out from some one who may actually know.