the roofline of the Marquis saw a complete redesign. Though distinguished further from the Lincoln Continental, the four-door Marquis shared its roofline with the Ford LTD; in contrast to the LTD, the two-door remained a hardtop with retractable side windows (enlarged for better visibility). Alongside the four-door hardtop, the four-door sedan and station wagon were marketed as "pillared hardtops" (produced with thin chromed B-pillars, allowing frameless door glass). The interior saw a revision of the trim and seats, with a redesign of the dashboard (clustering the instruments behind the steering wheel and the secondary controls to the center of the dashboard). For 1974, the grille underwent a redesign (nearly matching that of the Lincoln Continental), shifting to a vertically-oriented layout and eliminating the egg-crate trim of the headlamp covers. Following their addition to the front fascia, the Marquis received 5-mph rear bumpers. In response to pending safety regulations, the four-door hardtop was offered for the last time. For 1975, the front fascia saw several revisions, with a larger radiator-style grille (with the "Mercury" block lettering replaced by a script above the left headlamp); in contrast to the Ford LTD Landau and the Lincoln Continental, the headlamp doors were revised with chrome border trim and a crest emblem. The rear fascia received padded vinyl trim (body color or contrasting) between the taillamps. While Ford and Lincoln added B-pillars (and opera windows) to their two-door sedans, Mercury retained its hardtop roofline. For 1976 though 1978, the Marquis saw few visible changes; in 1976, a Landau vinyl roof option was introduced for Brougham and Grand Marquis two-doors, while all versions of the Marquis were marketed as "Ride-Engineered" (promoting its successful ride comparisons against more expensive European sedans of the time). For 1978, the Marquis was given a redesigned grille, retaining a similar radiator-style design. Alongside the 1978 Chrysler New Yorker two-door, the 1978 Mercury Marquis was the final pillarless two-door hardtop (with retractable rear side windows) offered by an American automobile manufacturer. Trim In 1969, Mercury adopted the Brougham name from the Park Lane series, continuing its use as the highest Mercury trim line. Following the discontinuation of the Monterey after 1974, all full-size Mercury sedans took on the Marquis nameplate. Introduced as an interior option package for the Marquis Brougham in 1974, the Grand Marquis became a stand-alone trim line above the Brougham for 1975. From 1969 to 1978, the Colony Park