I had a ‘77 El Camino that the previous owner put a scream’n chicken on the hood.
I was in the Army and didn’t see Dad much, but he put some kind of go fast kit on that car.
He cut out the back (really the front) of the hood scoop and put hinges and magnets on the flap.
He’d hit it and the flap would snap open.
Great car.
He sold it to a young guy who wrapped it around a tree.