9ff Porsche Cabriolet T-6
9ff Cabrio Tops 236 mph at Nardo
When the German magazine Auto Bild Sports Cars invited 9ff to the Nardo high-speed circuit to compete with 16 other tuners, they took it very seriously. After extensive development, their 911 Cabrio T-6 made 780 bhp, which has proved to be enough to leave others in the dust. The official speed record for road-legal convertibles now stands at 236.5 mph (380.5 km/h).
EDIT: Thread 450