I think they were available on any Cuda.
Fpaps quote:
Concours quality reproductions molded in black polyethylene plastic, as original. Superior in durability to incorrect fiberglass reproductions. Placement instructions and correct style mounting fasteners included. Ready to Install.
Although originally offered only in 1970-71, will fit all 1970-74 Barracuda models. Made in USA. A Mopar Authentic Restoration Product
Cool, that's probably better than the ebay deal because it comes with correct style fasteners and placement instructions. Thanks.