The SA Aperta utilised the higher performance engine and gearbox from the 599 GTO and has a lower ride height, thicker rear anti roll bar and recalibrated magnetic dampers. The SA Aperta also has a slightly raked windscreen as compared to the 599 GTB along with larger cooling ducts in the new front bumper and a rear bumper in body colour. The car has a removable soft top that was only intended for use in city driving and to protect the interior from rain. The boot-lid was made of aluminium while the C-pillars were made of carbon fibre and have a silver finish along with the windshield frame. The exhaust system was a modified version of the one used in the 599XX and the car has special 5-spoke wheels unique to the variant with a chromed finish along with a triple layer body paint. The interior was also redesigned and has a two-tone colour scheme and the car has sports seats as standard equipment. Only 80 examples were produced, honoring the 80th anniversary of Pininfarina and all were sold before the car was unveiled to the public. In December 2011, Ferrari announced a special edition of the 599 GTB to celebrate 60 years of their wins in F1. From Froilán González's win at Silverstone in 1951 with the 375 F1, to Fernando Alonso's win at Silverstone in 2011 in the 150° Italia, Ferrari have been winning hundreds of F1 races. The car was based on the 599 HGTE chassis, that utilised stiff suspension, shorter springs and stiffer anti-roll bars. The new 20" diamond-finished forged alloy wheels and Scuderia Ferrari shields came on the body as standard. There were three choices of paint finishes to choose from:   The interior in the European version of the car has Sabelt bucket seats whereas the US version featured Recaro bucket seats, both being made from Alcantara. The Ferrari P540 Superfast Aperta is a one-off convertible sports car based on the Ferrari 599 GTB Fiorano. This car represents the second car in Ferrari's Special Project program. Edward Walson commissioned the car in 2008, asking Ferrari to build a modern interpretation of the gold covered Carrozzeria Fantuzzi-bodied Ferrari 330 LMB built for the 1968 film "Spirits of the Dead". The P540 was revealed to the public on December 11, 2009, but had been spotted in spy shots several months previous to this.