I did this and didn't know about that link. Its an easy job, just a PITA to get the headliner out. I removed the complete interior when I did mine, but you do have to remove all the trim pieces. But, yes it is just as simple as the link states. Of Note!! Spray the glue on the back board first and let it get tacky. Use Lots of the stuff!! Summer Heat will sag again if you don't glue it good. Basically use two layers of glue, one as a "base coat" on the backboard, the other to stick the material to it. Now, the material. Depending on what you choose, you can just go to wally world and get fabric, or you can go to places that carry actual headliner material.... It's up to you. For me I chose actual headliner material that had the foam liner backing and when I (my wife) finished the project, it looks factory new! total cost of materials, $55.00, and dinner out for the labor. If you are in Central Northeast Florida (St. Augustine) hit me up and the wife won't mind doing it again. As long as she gets dinner out of it. :rofl:
BTW. While you have your trim pieces out, go to the parts store and get trim molding paint and repaint your moldings! Wow, what a difference, feels like I'm driving in a new XJ! It just gives it that extra... For that matter, as long as your gutting it, go all the way and duraline the floorboard as well.......... Oh, D@mn I'm getting carried away again.....