Special Brougham and the Fleetwood 75 respectively. In 1985, Fleetwood became a separate series in its own right. Fleetwood as sole designation 1985–1996 Front-wheel drive: 1985–1993 In 1985, Fleetwood models used a new front wheel drive C-body platform, sharing the wheelbase with GM's other C-body cars, the DeVille, Buick Electra, and Oldsmobile Ninety-Eight. The Fleetwood Brougham continued to use the RWD platform, (which was redesignated as "D-body" for 1985) through 1986. As had been the case since the 1977 model year, there were little more than trim differences between the Fleetwood and the DeVille. For 1985, the Fleetwood was actually a de Ville trim option, rather than a separate model. The optional d'Elegance package, added tufted-button seating among other niceties for the FWD Fleetwood sedan. The Fleetwood coupe had been dropped after the 1986 model year, but returned in 1989. The Fleetwood coupe for 1989 - 1992 was not popular with model year production in 1989: 4,108, 1990: 2,438, 1991: 894, and for 1992: a mere 443. Cadillac offered the Fleetwood Sixty Special for model years 1987-1988, using a stretched version of the new C-body platform — as well as the Fleetwood Series 75 for model years 1985-1987, using a stretched version of the same platform. The aluminum 4.1 L HT-4100 V8 was replaced by the 4.5 L HT-4500 for 1988. The engine displacement was increased for 1991 to the 4.9 L HT-4900. The Fleetwood line was redesigned for the 1989 model year to include skirted rear wheels. The Fleetwood coupe remained on the wheelbase, while the sedan's wheelbase increased by . The slightly revised Fleetwood coupe, with extended front and rear styling, was sold from 1989 and ended in 1992. Power was increased to from the same 4.5 L engine for 1990 through the use of a dual-stage intake manifold and other changes. It was replaced by the 4.9 L HT-4900 for 1991. The Fleetwood nameplate departed the front-drive lineup for 1993 (as Fleetwood was transferred to the new rear-drive replacement for the 1992 Brougham). Instead, the Sixty Special nameplate was used on the front-wheel drive model for 1993. A total of 5,292 Sixty Specials were built during 1993, including 688 with the optional "Ultra" Package that featured 22-way adjustable front seats, designed in Italy by Giorgetto Giugiaro. This seating package had been standard on the Sixty Special since 1989, but in 1993, it became a $3,550 option. While