I redid my headliner in my 08 ram. First off, get material that is 64" wide. I used 60" and am about an inch short on both sides. Second. I would pull the old material. Youll have to have a belt sander of some sort, or a wire brush, to get the foam off from underneath the layer of material you'll actually get off. And then finally, lay the material out on the headliner board so that it is covering where you want it to cover, and then fold up one half to the middle of the fabric, spray the underside of the fabric and the board, and slowly lay back down while smoothing it out. And then do the other side.
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