So, Xenons were replaced with XenoFLo D2C bulbs (6K white) from www.bimmian.com? That's what I just may go with.
http://www.bimmian.com/HIU/X5

The LEDs gave errors for Rich ... Neil, did you have to install resistors? Or maybe you got a different set?
EDIT: Rich, looks like they sell resistors on the same page for ordering the LEDs. So, you probably need them.