I think the hood was original too. From what I gather it came standard on the 71 Spring Specials. I stumbled across this info:
"In April of 1971 Ford added a Spring Specials with Boss/Mach 1 style hood, grille, body color bumper, stripes, wheel coverings, vinyl "Halo" roof and whitewall tires. Only 500 were made and was priced $97 over base."