Check out these threads - a number of us have done it, I'm in the process now, initially had bad luck, but quickly sorted out if you're handy.

http://www.xoutpost.com/bmw-sav-foru...ghlight=spyder

http://www.xoutpost.com/bmw-sav-foru...-bad-halo.html

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2000 E46 323Ci 5spd Sport
2001 E38 740iL Security
2002 E53 X5 3.0i 5Spd Sport
2003 E39 540i/6 MSport #501
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