Barracuda FB Rear Quarter Glass Sticks

Remove the window winder and arm rest if your car has them. (Rear arm rests not standard on 68 cudas but part of the Deluxe interior) There are clips at the bottom of the panel. You can get a stiff putty knife under the panel and carefully pry the panel away from the steel frame. Be gentle! The panel backing material is fragile and it's easy to ruin the clip holes in them. The upper edge of the panel then slides out from under the shiny stainless trim at the top.

The old lithium grease hardens up after 50 years. Clean and re lube. Avoid removing the mechanism unless you like solving Rubik's Cube.