Hi, I can help. I just went through this whole situation. Strangely, the part # I used is different from
either part # you listed. This part # I can
guarantee is accurate for the M2 LCI gauge cluster (non-Competition): 62-10-8-097-793. It's MPH.
Link for reference:
https://www.getbmwparts.com/oem-part...10-62108097793
Good luck.