Dart 340 twin hood scoops
They really didn't add much. There was an attempt by Chrysler to make them functional by adding two plastic tubes that fit in the oblong openings in the air cleaner, but attaching them to the engine then trying to make them go into the rubber grommets in the hood when closing it was not easy so they decided it would not be worth the hassle. I have seen a pair of the prototypes...