If you mean the material to the new cardboard panels then you need the glue used for headliners. If you are talking about gluing the panels to the body then don't do it. These panels originally had extra material on the top that glued into the rear window opening prior to glass. The bottom is held by the hockey stick and the front is held by the door welting (I forgot the name of the pinch material). If you think you need some extra holding power you can use velcro tabs. I just installed mine in my 70 Mach.