and Jeep became an AMC division) and sold back to GM by AMC in 1974. For 1975 and 1976, the Century and Regal were the only mid-sized cars in America to offer V6 engines. The bolt pattern for this vehicle is 5×. Production Figures: Second generation (1978-1987) A downsized Regal appeared for the 1978 model year with Buick's new V6 engine as standard equipment and a revised version of the venerable V6 as an option (which became standard for 1980). Initially, a three-speed manual transmission was standard but this was later replaced by an automatic. At the time of introduction, Regals were available exclusively as coupés with the Century nameplate applied to standard equipment sedans and station wagons. In January 1982 the Century was replaced by an all-new car on the front-wheel drive A platform, which meant that the Regal gained a four-door sedan and five-door station wagon - essentially facelifted and rebadged versions of the previous year's rear-wheel drive Century. It was the first time the name appeared on a full model lineup. The wagon was discontinued after 1983, and the sedan dropped from the lineup the next year. This generation Regal lasted ten years. The base model was equipped with softer-riding luxury suspension, and did not offer a manual transmission in later years. The 1978 Regal could be equipped with a Turbocharged V6 engine with automatic transmission, and was known as a Regal Sport Coupe. The Buick LeSabre was also available with the turbocharged engine. The only other turbocharged cars available in the U.S. market in 1978 were imports from Mercedes-Benz, Porsche and Saab. The Regal Sport Coupe also included a firm handling suspension with larger tires and sport wheels. Bucket seats and a center console with a T-shifter were also available. For 1980, the Regal was offered in a special Somerset Limited Edition trim which featured unique tan and dark blue designer exterior paint, wire wheel covers, sport mirrors, and chrome Somerset badging. The interior had tan and blue plush velour upholstery, brushed chrome trim, and additional Somerset badging. A Somerset Limited Edition model was also offered on the restyled 1981 Regal. It had unique dark sandstone and camel exterior paint, sport mirrors, and turbine wheels. The interior's plush velour upholstery was camel with dark brown piping. A major facelift for 1981 gave the Regal a much more aerodynamic profile, helping make it possible for the car