History of Lamborghini year. Ferruccio Lamborghini turned to Bertone designer Mario Marazzi, who had formerly worked at Touring. Together with Lamborghini's engineers, he created a four-seater named the Marzal. The car rode on a stretched Miura chassis, and it was powered by an in-line six-cylinder that was made from one-half of Lamborghini's V12 design. Despite an innovative design that featured gullwing doors and enormous glass windows, Lamborghini rejected the design. Eventually, a toned-down version became the Islero 400GT. While the car was not the full four-seater that he desired, Ferruccio Lamborghini thought the car represented a well-developed "gran turismo" product. It failed to
Lamborghini Miura steel chassis components and body panels with the lightweight aluminium alloy Avional and replacing side windows with plastic, with the resulting car weighing approximately 800 pounds less than a production Miura. A front spoiler was added and the headlights were replaced with fixed, faired-in units. Wallace substituted two smaller, sill-mounted fuel tanks for the single larger original unit. The suspension was reworked and widened (9" in the front, 12" in the rear), and lightweight wheels were fitted. The engine was modified to produce 418–440 bhp at 8800 rpm, with an increased compression ratio, altered cams, electronic ignition, dry-sump lubrication and