900S and 900 Turbo models produced from 1985 and onward were fitted with a 16-valve engine, while the basic 900 kept the earlier 8-valve engine. A 1989 Saab 900 SPG, owned by Peter Gilbert of Wisconsin, was driven over a million miles before being donated to The Wisconsin Automotive Museum. Peter Gilbert claimed a million miles out of the turbocharging unit in addition to the engine itself. Saab gave Mr Gilbert a Saab 9-5 Aero. History The 1979 900 was available in three versions of the B-engine: The GL had the single-carb engine, the GLs had twin carburettors for , the EMS and GLE had Bosch jetronic fuel injection for , and the 900 Turbo produced . The only bodywork originally available was the three or five-door hatchback style, which was seen as more modern at the time. The EMS was only available with three doors while the automatic-equipped GLE was only offered with five. Saab's model years were generally introduced in August/September of the preceding year. The Turbo had a different grille from the naturally aspirated models, which received a design with a hexagonal central element. For the 1980 model year, all versions received the sleeker turbo-style grille. The 1980 900 also received larger taillights rather than the earlier 99 units, as well as lower, adjustable head restraints. 1980 was also the first year for a five-speed gearbox, originally only available in the EMS and the Turbo. The four-door 900 sedan was introduced in Geneva 1980, as a result of dealer pressure. This introduction corresponded with the phase-out of the old Saab B engine in favor of the lighter Saab H engine. With the introduction of the H-engine, Saab simplified the model designation on the international markets outside Scandinavia: GL for the model with the single carburettor, GLs for the models with the twin carburettor engine, GLi as designation for the models with fuel injection without turbo, and correspondingly "Turbo" for the top models with the corresponding engine. The GLE was now offered only as a better equipped four-door Sedan. Model designations in the USA became just 900 for the base model and 900S for the models with 8V i. The EMS designation was dropped. In the early 1980s, most 900s were produced in Trollhättan. However, coinciding with the introduction of the 9000, more of the 900 production took place elsewhere. The Valmet plant in Finland, referenced below under