Due to the extremely limited number of examples of the Ferrari 599 GTB with a factory manual gearbox, some owners later opted for manual transmission conversions to increase its purity and collectible value. These conversions, replace the automated gearbox with a 6 speed manual with a three-pedal clutch, while maintaining the naturally aspirated 6.0L V12 engine. The result is a more analog and direct driving experience, highly prized by enthusiasts seeking a closer mechanical connection with the car.