F90
After almost 18 years, Ferrari acknowledged that the F90 existed and six were made for the Sultan of Brunei in 1988. A brief passage in the 2005 Ferrari Annual outlined an impressive order of six bespoke supercars which were much more daring than anything Ferrari would have produced themselves.
The project was managed by Enrico Fumia, the head of the Research and Development department at Pininfarina. At the time, the project was top secret, so much so, Ferrari didn't know of the project. Fumia styled the car and said the F90 name referred to it being a "Ferrari of the '90s."
All six F90s used a Ferrari Testarossa chassis which Pininfarina used to sculpt an entirely new body and interior on top of. The engines were stock units, producing 390 bhp to the rear wheels, but the radiators were moved to the front of the car.
Read more about this topic: Ferrari Testarossa