How many official versions of the E46 M3 were produced?
BMW produced eight official versions of the E46 M3: The standard M3 coupe and M3 convertible were offered in both ECE-spec (left-hand drive and right-hand drive) and North American-spec forms. In addition, the M3 CSL coupe was produced only to ECE (European) specification in both left-hand drive and right-hand drive configurations.