Zagato’s 550 GTZ is one of the secret Ferraris that was made from the prying eyes of the press and Ferrari themselves. Like Ferrari’s early competition cars, the 575 GTZ has an all-aluminum body and is strictly a two seat affair. Unlike the five Coupés Zagato made on the 575M Maranello platform, Zagato had to start with the much more exclusive Ferrari 550 Barchetta Pininfarina. These had the required chassis strength and provided a basis for the 550 GTZ. Zagato only built five Coupés and three Barchettas.