The 1967 Plymouth Belvedere lived a double life — one version chased down traffic violators for the LAPD and starred in Adam-12s pilot episode, while another, ordered with the rare 425 horsepower 426 Hemi option, could out-muscle nearly everything else on the road. Only 720 buyers checked that Hemi box that year, making it one of the most overlooked factory Hemi cars Mopar ever built.