This comes from a MotoringFile reader:

I thought you would like to know the Auxillary Gauges kit is now available for the 2005 Mini Cooper S. The part number is 82-94-0-303-934. While there was some discrepency as to if this would work in the '05s, my service advisor tells me they will fit. I have an installation appointment scheduled for Tuesday, and will let you know how they look and work.