I know no 2 is your Mopar because my uncles second cousin had one exactly like it except his had the rare 440 factory race Hemi with the turbo, positraction and a full race cam.
Maybe an Acadian? Scary thing is people who think it's a Nova will see the plate and think it is one of the other GM's, cause they have no clue what a Duster is. I wonder what they would think if you saw a Nova and said "nice Duster'?