My 74 duster still has the cardboard one. I tried using a plastic one from a 76 duster and it would not fit. The dash frame was different if I recall. So I abandoned that and used a cardboard repo.
All the glove boxes/dash openings are the same. The plastic ones are a little tricky to install, you have to fold them so the outside edges completely overlap (hence the fold line). Then they still take a bit of maneuvering and a lot of patience.
I'm not sure what my '74 Duster had originally but it was missing (so probably cardboard). It has one of the OE plastic ones installed now. :D
