After almost 18 years, Ferrari finally admitted that the F90 existed and was made for the 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. Fumia styled the car very similar to a Pininfarina Ethos Concept car made in the same period.
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. Interestingly, the wheels were also left untouched.
Ferrari says one of the most striking design cues was the edge design that flows around the vehicle. Fumia describes this as the elliptical leit-motiv. This theme is extended to rear light cluster, rear wing, and door accents. The F90’s custom interior is surrounded completely with a glass greenhouse and the sunroof can be fully removed.
After ordering six F90s, the Sultan and his brother Prince Jefri spent the next ten years ordering custom supercars from Aston Martin, Rolls Royce, Bentley, Dauer and more. Just before they stopped the influx of supercars, six Ferrari FXs were made around the 512M and featured William’s F1 electro-hydraulic gearboxes.
So far, none of the Sultan’s special Ferraris have escaped Brunei. One was spotted around Monaco and featured in a black and white photo in Cavallino magazine. Since then, the F90s haven’t been spotted.