68 dart headliner..
Hi, I installed my own headliner in my 70' Dart. I bought my headliner from "Yearone" and I used general contact cement from my local hardware store which was recommended by Yearone to use and it worked great.
The main thing on install is don't try to pull the headliner tight when installing, just pull it snug to the front and back and then snug to the sides. You will need U clips for the side when you pull the sides put your contact cement on and clip to the lip. After it's all up the secret is "HEAT". A steamer is best but you can use a heat gun if your careful. If you use a heat gun hold your hand between the gun and your liner to make sure you don't burn it and if you use a heat gun you will need an old sprayer like a windex bottle or something to keep spraying on your liner as you are drying it. I used a hand steamer and it takes about 3 hours to completely steam the entire liner to have no wrinkles or stress lines.
My liner was the first one I ever done and when I had my car appraised the guy couldn't believe how great it come out. He thought it was installed professionally. Good luck, Dave!!!!!!!!!!!