DESC: The 2001 Carrera line is comprised of five vehicles: the 911 Coupe and Convertible, the 911 Carrera 4 all-wheel drive Coupe and Convertible, and the completely redesigned 911 Turbo, which also features all-wheel drive. The base Carrera and Carrera 4s are powered by a 300 hp six-cylinder Boxer engine. The Turbo is equipped with two turbochargers and intercoolers, which help its 3.6L six-cylinder engine produce a full 415 hp. For the first time, all Carreras, including the Turbo, are available with Porsches Tiptronic five-speed transmission, which features fully automatic or manual operation. The 911 Carreras are available with a wide variety of trim options and packages, allowing customers to customize the appearance of their Porsche