The North American 500 is marketed in Pop, Lounge, Sport and Turbo trim levels with market-specific modifications including increased body strength; revised suspension; changes for reduced noise, vibration, and harshness; BiHalogen projector headlamps and amber front and red rear sidemarker lights and reflectors on each wheel arch edge to comply with FMVSS 108; new four-wheel anti-lock disc brake system with new front calipers; larger fuel tank; upgraded heating and cooling system; revised front seats with an armrest and seat cushion; easy entry system designed into the driver's seats; revised steering wheel controls and revised steering; a Bose branded audio system as well as a more rounded center grille and a plastic lip that wraps onto the bottom of the spoiler. FCA offers the North American 500 with either an AISIN 6-speed automatic transmission with a driver-selectable mode as well as a 5-speed manual.