BMW Motorsport developed a Group 5 version of the all new 'E21' 320 saloon. The new GT racer was ready in time for the 1977 season and replaced the ageing 3.0 CSL, which had actually started life as a Touring Car earlier in the decade. Producing around 310 bhp from its two-litre displacement, the twin-cam, sixteen-valve engine was mounted inside a heavily modified production car shell. This had been stripped off all unnecessary components and fitted with massive flared wheel-arches and an aggressive aerodynamics package that been honed in the Pininfarina wind-tunnel. The end result was a truly spectacular machine that tipped the scales at just 740 kg including the driver and half a tank of fuel.