SAAB FOR 1997 - Available with a choice of three powerplants, Saab's popular 900 five-door is a versatile sports sedan that provides value and safety without sacrificing driving pleasure. The 1997 Saab 900 S, powered by a dual-cam 150-hp 2.3L engine, sports an aggressive new light-alloy three-spoke wheel design. The Saab 900 SE, with 1 6-inch low-profile tires and "Viking Aero" Wheels, is available with a potent 1 85-hp Turbo four-cylinder or a smooth, responsive 2.5L V6 engine.