Orignal Engine & Engine Box ( Matching Numbers), Leather Interior, Drives Beautifully, ROAD TAX EXEMPT. This Sahara 1973 BMW 2002 Coupe with the 2.0-liter M10 inline-four with a four-speed manual transmission. The ineterior seats are made of vinyl upholstery and it is still in it's original condition. The 2.0-liter M10 inline-four was factory rated at 113 horsepower and 116 lb-ft of torque.