71 Duster Hood Scoops

Yeah 4 1/8" I remember having to buy a hole saw to convert a hood once.
I had a 72 340 demon with the double scoop and it had two holes under it from the factory. The dart hoods and the cutouts in the under bracing 70-72 even if they did not have scoops.
I never had a duster with scoops, maybe the functional scoops was a dodge only thing.