The F90 is a secret bespoke project based on the Testarossa: six units were built in 1988 for the Sultan of Brunei. Enrico Fumia, head of research and development at Pininfarina, led the project and styled the car himself; the name was meant to represent a "Ferrari for the '90s." Riding on the Testarossa chassis, it featured an entirely new body and interior, the radiators were relocated to the front, and standard 390 PS engines drove the rear wheels. For nearly 18 years, Ferrari denied that the F90 existed.
Summarized from the sources cited below; every figure in the text was automatically verified against the sources.
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