A new frame, suspension and steering system were the major changes in 2003 to Mercury's Grand Marquis full-size sedan. Equipment revisions and a mild face-lift highlighted changes for 2004. A CD player replaced the cassette unit on base GS, GS Convenience and LS Premium sedans. The modified overhead console contained a compass and garage-door opener., , Five Grand Marquis trim levels are available: GS, GS Convenience, LS Premium, LSE and LS Ultimate. Two-tone paint is optional on all 2005 models, which gain an automatic parking-brake release and an occupant sensor for the front passenger seat., , The Grand Marquis and similar Ford Crown Victoria are the only six-passenger rear-wheel-drive sedans with V-8 engines and traditional body-on-frame construction sold in the United States. The 4.6-liter V-8 produces either 224 or 239 horsepower., , According to Ford Motor Co., every Grand Marquis since 1996 has earned five-star ratings for the driver and front passenger in frontal-impact crash tests conducted by the National Highway Traffic Safety Administration.