Okay I have a 65 Barracuda and I have no idea what to call the panel under the radiator/grill. It is directly under the bumper. and has an air scoop in it. Mine is VERY beat up and I don't think I can salvage it.
should be able to get it by itself. i'm sure it is model specific perhaps over a few years but 1st model cuda I cant speak specifically to your Barracuda.
my 67 attaches to bottoms of front fenders and is also secured to the core support in the middle.