difference between 70/71/72 dart

interior. headliner to be exact. my 71 has the perforated fabric type headliner but i have been noticing when looking at 72 darts on the web, some have the poster board, card board or whatever they call it, type headliner. is there that much difference in the 70-72 cars that the 70/71 COULD NOT use that style liner/ tia. rick w.