Hi Charles;
The original head liner for the Sedan and Coupe have cross bows and a hook bar on the front and back of the sedan and just the rear of the coupe. Note that the front windshield seal should be removed to replace the coupe head liner to make it tight.
If you go to the ANZ group site there is a picture of the tools I use to unhook the head liner.
If your head liner is ok, no tears or rips but the glue where the foam rubber was glued to it's back side is showing a dark gray area in the material. You can paint it with vinyl spray paint. The headliner can be removed, hang it up, clean it by washing with a mild soap, then use a vinyl paint primer let it dry and paint with SEM Phantom White which will make them look brand new.
Bill