1973-76 Plymouth Duster Fiberglass Fenders

Ok, I need some clarifying here.

Does anyone know anything about these fenders???
I am not much of a mopar guy when it comes to parts like this. I am pretty sure it is for something after 1972. My father passed away and any help would be appreciated. I am not good at identifying parts. I will get more pictures on Thursday and post them up for better identification.