Hi,
I talked to my Service Advisor and Service Manager about this for my old Cooper and they told me that it was possible, but would end up being very expensive. Not only do you need the get a new steering wheel (or at least the MF parts), you also need all the wiring associated with it and your ECU will need a flash (if possible) to enable cruise. Well...thats what they told me at least.
Check out this site:
Real OEM
I have found it useful when sizing up a job, not only for the parts, but also how they come together. It appears that they list a Multi-Function retrofit kit...interesting. I'm not sure where to suggest you go from here, perhaps others can offer some suggestions.
Good luck.
Bryan
