When BMW launched the E46 M3 CSL it wasn’t provided with a full-fledged guide transmission. As an alternative, it had a slightly clunky SMG gearbox that was, arguably, essentially the most important weak point of the automobile. Effectively, there’s one thing lots of people don’t understand about that SMG gearbox – it was truly a “robotized” guide transmission, and that opens the door to a reasonably superior conversion. That’s the place All the pieces M3s comes into play, and for a bit greater than $4,500 (£3,500), they’ll make that SMG a true-to-life guide transmission with a shifter and three pedals.