I just installed the cardboard headliner in my 1950 3100 Chevy truck. I got it from Classic Parts and it fit perfect; no cutting required. I would highly recommend using popsicle sticks under the front windshield gasket to hold the front section of the headliner in place while you are positioning it and using the window installation stick to pull the rubber back to push the headliner forward under the gasket. I used 10 popsicle sticks; 5 on each side evenly spaced. It made it so much easier than when I tried without them.
