Installing duster headliner
RestoRick has a good tutorial here:
http://restorick.com/tech/topic.asp?TOPIC_ID=5
I've done it. It's very doable - just requires patiences and lot's of spring clamps. I've got some pics (scroll down page):
http://70duster440.com/reassembly.html
Definitely easier with the glass out. If the side windows and roof rail weatherstrip retainer happen to be out you'll have a little more room to work too but it's not required.