In the late 50s, the activities of Carrozzeria Zagato reached a semi-industrial size. The official collaboration with renowned sports brands of the period pushed the company to move, in 1961, from Milan to a larger production site in Arese, near to where the future headquarters of Alfa Romeo would be built. In this plant, the company began its production of fuoriserie road and racing cars at ever-increasing rates to meet industry demand.
In 1984, the collaboration with Maserati resumed at full speed. Alejandro De Tomaso, enchanted by the one-off A6G/54 Spider, awarded Elio and Gianni Zagato the task of creating the design and production of the Biturbo Spyder.
Distinguished by a shorter wheelbase of 11 centimeters, compared to the “closed” version (adjusted to strengthen the chassis and harmonize it with the body), the Biturbo Spyder retained the same six-cylinder, two-liter, twin-turbo engine.
Stylistically, it was characterized by a fabric roof that, once lowered, disappeared into a special compartment created by the new design of the rear.
In 1989, the model evolved with a new version equipped with a more powerful, 2.8-liter engine. In the same period, the commercial push also launched in the American market, where it was sold with a 2.5-liter engine and catalytic converter. In total, production reached nearly 7,000 units.
Source: 2015 Maserati Mostro By Zagato | Top Speed. https://www.topspeed.com/cars/maserati/2015-maserati-mostro-by-zagato-ar169527.html
Images: Zagato