Alpina B5
In 2005 Alpina introduced the B5 powered by a supercharged 4.4 litre V8 producing 500 hp (373 kW; 507 PS) and 700 N·m (520 lb·ft) of torque. It was available only with 6 speed ZF transmission. Top speed is 314 km/h (195 mph) and 0–100 km/h time is 4.7 seconds - same as the E60 M5.
Read more about this topic: BMW 5 Series (E60)