He is correct the factory never installed a hood scoop but dealers did . The proper scoop was available on the 1973- 1974 Dart sport performance hood package It is shaped slightly differently on the bottom as the Dart Hood used up to 1976 was crowned slightly more than the Duster hood which had some flat ridges so the universal one would be necessary. If it has the correct mounting studs it will line up with the under hood access holes in the hood bracing for nut access. It sure looks good on the Dart Hang Ten I have one. See Mopar Muscle online in the archives to see my car.