derivatives, adopting engines and transmissions from the Chrysler AA platform (Dodge Spirit/Plymouth Acclaim) and the Chrysler AC/AY platform (Chrysler New Yorker/Fifth Avenue/Imperial and Dodge Dynasty). Retaining the unibody construction of the first-generation minivans, the second-generation minivans are fitted with a MacPherson strut front suspension with coil rear springs; all-wheel drive versions have 4-wheel independent suspension with a leaf-sprung rear axle. During the development of the platform, attention was paid on refining the handling over the first-generation vans, in order to improve stability, maneuverability, and steering feel. For 1991 to 1993, a disc front/rear drum brake configuration was utilized, with a four-wheel disc brake system introduced in 1994. All versions were fitted with anti-lock brakes. Powertrain With the lone exception of the Chrysler 2.5L Turbo I inline-4, the second-generation minivans returned the powertrain from their 1990 predecessors. The standard engine was a naturally-aspirated Chrysler 2.5L inline-four, producing 100 hp; this engine was standard on standard-wheelbase passenger vans and all cargo vans. A Mitsubishi-produced 3.0L V6 (producing 142 hp) was an option on short-wheelbase vans. Introduced in 1990, the Chrysler 3.3L V6 (producing 150 hp; increased to 162 hp in 1994) was standard on all Grand Voyagers/Grand Caravans, Town & Countrys, and vans with all-wheel drive; the 3.3L V6 was offered on short-wheelbase as a second option. For 1994, the AS-platform minivans adopted the 3.8L V6 engine from the Chrysler Imperial. A larger-bore version of the 3.3L V6 tuned for additional torque output, while producing the same 162 hp of the 3.3L V6, produced 213 lb-ft of torque. The standard engine of the Chrysler Town & Country and all-wheel drive vans, the 3.8L engine became an option on the Grand Voyager/Grand Caravan. In January 1992 a 2.5-liter turbodiesel built by Italy's VM Motori was made available in Austrian-built Voyagers. Initially deleted from the model line for 1991, the 5-speed manual transmission made a return for 1992 through 1994 on base-trim or cargo vans. The 2.5L engine was available with a 3-speed TorqueFlite automatic, along with the 3.0L V6. The 4-speed Ultradrive overdrive automatic transmission was fitted to both the 3.3L and 3.8L V6 engines. The Europe-only turbodiesel was only available with a five-speed manual transmission. Body In an extensive redesign, the second-generation minivans featured a major revision of the exterior, lowering the exterior coefficient of drag from 0.43 to 0.39. While the styling changes were largely evolutionary, the AS-platform vans shared only