R55/56/57 are the chassis codes for the current generation MINI clubman/cooper/vert. This is the one you want. Not sure the previous generation chassis harness will work. My guess is not.
Current: 2016 F80 M3 6-Speed | SO | AB XT1 | ZCP | M Performance Suspension | GC Camber Plates
Previous: 2009 E90 M3