Want! In a very, very bad way. That will probably be the first aesthetic modification I do to my M5. The 540i will get the M5's stock amber ones and the 540i will have their thrown on flea-bay or sold on the board. Where did you buy yours from? With so many vendors, it is hard to know you are getting the absolute best price.
Oh yeah, they look amazing on your car by the way.
If anyone is interested, I have a set available for sale. European clear xenon LHD version. Brand new in original Hella boxes, and includes the plug adapters for pre-01 cars. Ballasts are not included. Please PM reasonable offer.