Removing hard headliner 75 duster.

My original solution was to buy a used cardboard headliner and refinish it. I did this by covering it with Vinyl material after repairing the damaged sections.. It looked great, but when I went to install it, I found out it was for a Swinger and not a Duster. If I had the correct cardboard to begin with, I feel that would have been the best solution for me.

Cley