1973 Duster cowl and Hood pinstripes - Scoop?

It does seem odd. I discovered they are the same as the 69 cuda scoop. Aftermarket has them as non-functional. Only on 73-74 Duster Twister and pretty rare. Most people say they look wrong. Some old posts claim they were functional but from what I see its only if the owner made them that way. What I was hoping to find was details on where they are on the car. Most pictures are hard to tell. I guess for the rarity it probably doesn't matter.