New Yorker (and New Yorker Fifth Avenue). For 1983, the Grand Marquis was expanded to an unnamed standard trim and the top-trim LS. The former effectively replaced the Marquis Brougham (the Brougham nameplate was adopted by the mid-size Marquis) and the latter was a trim designation adopted across the Mercury model line during the 1980s. As part of the 1988 model update, the standard-trim Grand Marquis became the GS (in line with the Topaz and Sable). The badging of the model line underwent a revision, as the script lettering used since its 1975 introduction was replaced by block-style lettering (in the style of the Sable, Topaz, and Tracer); the Lincoln-style hood ornament was replaced by a version with the Mercury "flying M" badge", which were added to the trunk lid and wheels. Production Second generation (1992–1997) Unveiled on November 28, 1990, for the 1992 model year, both Ford and Mercury Panther-platform cars underwent their most extensive changes since their introduction for 1979. While the chassis was retained, the body was all-new from the ground up. After thirteen years on the market, the full-size sedans from Mercury and Ford were struggling against far more modern competition. Additionally, as an unintentional consequence of years of badge engineering, the Grand Marquis and its LTD Crown Victoria counterpart were left as virtual identical twins. In a significant break from precedent, the Grand Marquis and Ford Crown Victoria (no longer an LTD model) were allowed completely different bodies; the only visually shared body parts were the front doors and the windshield. Development began in early 1987, with a design approval in 1988, January 14, 1991 start of production, and March 21, 1991 introduction. In line with the rest of Ford Motor Company vehicles sold in North America, aerodynamics and fuel economy played a large role in the design of the new Grand Marquis. Unlike the Crown Victoria, which followed the design themes of the Ford Taurus, the Grand Marquis would combine contemporary design with traditional styling features seen in full-size sedans such as full-width taillights, a formal roofline, and a chrome waterfall grille. In various forms, the chrome waterfall grille became a signature styling feature across the Mercury product line from the late 1990s onward. As part of the redesign, Ford sought a new type of buyer for its full-size Mercury sedan; instead of the older buyers who traditionally bought them, the 1992 Grand Marquis