I don't know where they came from. They look cool. They would look real cool, if it was part of the body and same color. Remove of the door handles, locks,fender badging,wheel well, and rocker panel chrome, move the gas filler to top of fender, next to the B-Cuda wings, and you would have a nice mild custom. Maybe remove the letters from the hood and trunk, also.
Just my idea.
barracudadave67