I'm not sure of the purpose, but 1969 Charger Daytonas and 1970 Plymouth Superbirds had a chrome trim piece at the A pillar that was not fitted to standard Chargers and Road Runners.
The piece appears to wrap around the sides of the windshield and back to the A pillar.
It looks to small to do anything good, but it has me curious about its purpose.
Everything added to the cars had some sort of aero functionality. The backwards facing scoops on the fenders had a cut out to exit high pressure air on the racing versions of the car.
