Valiant Headliner Install
The seal around the rear window has a large lip that if you push it away from the window you will see metal tabs that look like sharks teeth under it to hold your headliner. I used a nylon or plastic body putty spreader to push the headliner under the rubber and onto the teeth which worked out just fine. To make sure it was a good tight fit what I did was actually wrap the new headliner around the spreader to pull it tight then pushed it into place. Make sure you have the headliner centered and start in the middle. Good luck!