Some late 70s Firebirds/Camaros had the perforated headliner material. It was kinda like thin vinyl with holes in it. Why did it need the holes anyway? But it had spongy foam or foam like stuff on the backing with the fiber board. You would apply this the same way as a typical G-body fabric headliner, I would imagine, but likely apply the glue with a brush or something on the back side of the headliner material perhaps? You wouldn't want to get glue up in the holes and have it come out there. It likely wouldn't if you "webbed" the glue in place on the back of the foam and didn't put it on too heavy. Because you sort of have to let the glue dry to a tacky state anyway. Once you put the two together it's instant bond time.