anybody know about these

[chevellejoe]

I was at a car show and saw a 69 Chevelle like mine with a black plate in between the grill area and the radiator. It covered that hole where you can stick your arm down in front of the radiator. Does anyone know what this is called and where i can get one, it makes the car look a lot sleeker and i am dying to get one of these for my 69.