Styling changes were minor. Taillights were now recessed in body-color bezels that were divided by a single central horizontal bar. Front headlight bezels were now made of nylon and similarly body-colored. A new injection-molded ABS plastic grille was dominated by a horizontal bar that extended forward in the center from the sides, while its outline had squared off edges that wrapped forward into the inner headlight extensions. Fender-mounted marker lights were added at the front and rear as standard equipment, as the U.S. National Highway Traffic Safety Administration (NHTSA) regulations mandated their application (along with seat belts beginning January 1, 1968) to all passenger cars sold in the United States for 1968.