burl wood veneer. Weight was also reduced by at least as compared to the Quattroporte III primarily due to the compact Biturbo underpinnings and by the use of a compact powerplant. After having been displayed in December 1995 at the Bologna Motor Show, a 3.2-litre twin-turbocharged V8 Quattroporte was added to the range in 1996: the new AM578 engine, an evolution of the Shamal V8, generated a maximum power output of 335 PS (247 kW; 330 hp). The top speed was claimed to be . At the same time, some minor updates were introduced on all models: new eight-spoke alloy wheels and aerodynamic wing mirrors, and seicilindri or ottocilindri (Italian for "six" and "eight-cylinders" respectively) badges on the front fenders, denoting which engine was under the bonnet. As standard, all the three engines were mated to a Getrag 6-speed manual transmission, while 4-speed automatic transmissions were available on request with the 2.8 and 3.2 engines respectively—4HP22 by ZF Friedrichshafen and a computer-controlled transmission supplied by an Australian firm BTR. In July 1997, Fiat's subsidiary Ferrari acquired a 50% controlling stake in Maserati S.p.A.. Ferrari immediately undertook a renewal of Maserati's dated production facilities, as well as made improvements to the manufacturing methods and quality control. The steps taken by the new parent company resulted in the improved Quattroporte Evoluzione which was introduced at the March 1998 Geneva Motor Show. It featured 400 all-new or modified parts out of a total 800 main components. Powertrains and performance remained unvaried, save for the adoption of the same BTR transmission from the 3.2 V8 for the automatic 2.8 V6 model. The Evoluzione no longer had the oval Maserati clock on the dashboard and had redesigned wing mirrors. Ferrari management decided to drop the 2.0 L V6 from the Evoluzione lineup, when they were offered alongside the new 3200 GT, and so the new cars were distinguished from the earlier models by V6 evoluzione or V8 evoluzione badges on the front fenders. Production of the fourth generation of the Quattroporte ended in May 2001 and 2,400 units were made in total with 730 being the Evoluzione versions. Japanese importer Cornes & Co. ordered a special numbered edition of the Quattroporte for their customers. Cornes Serie Speciale were the last cars built and were limited to only 50 examples. Available in both V6 and V8 Evoluzione variants, all were equipped with the automatic transmission. This