Dual Snorkel Scoop Question

Actually 3 versions. The part that makes it what it needs to be for your specific application to fit the center peak contour of your hood is the forward center piece held on with Phillips screws. The larger main part of the scoop fits all 3 hoods.

70-72 dart
73-76 duster
73-76 dart sport

I have to disagree on your list.....While there were only 2 bases, one for the basically flat hooded 1972 Demon and one for the "peaked" 1973 Dart Sport (I don't recall if they were an option in 1974.), they were never an OEM option on Dusters. But obviously the can be made to fit other hoods and "look" OEM.

Doesn't the '70-'72 Duster have a wide, raised ridge down the middle which would complicate sealing?

I think there is a looooong "sticky" thread somewhere here on the subject.

69GT - The hood bracing may be the same as newer models and several of the mounting studs will line up or be close to holes in the bracing. I used 2 of the bracing holes on the centerline as a start. Doing the 2 factory approx. 4" holes?