Richard, Some Interior Help Please?

To my knowledge, the 72-76 Dusters used the molded fiberboard style headliner with a foam backed cloth style covering similar to what your more familiar with on the more modern cars. In addition to the fiberboard style headliner, an ABS style headliner is available as well in either a covered fabric or non-covered fashion.

It is to my understanding that all of these headliners are coming from ACME out of Long Beach, CA. They do not sell to the public, so you will have to go through someone like Stock Interiors, Rock Auto, Legendary, etc.

Some people have gone the route as as @robert flippo outlined. The deal that he has posted is a great offer price wise if you should want to go that route.

In regards to the correct material as to @directconnection340 asked, the factory OEM materials was the fine pembrook perforated grain. The perforated grain is what most vendors sell as it is much easier to obtain and is cheaper to purchase and retail.