If we do not know if the lights fit the B5... no use.
Somebody tried?
I am almost sure that my challenge is the biggest as I have a prefacelift with no fogs (or rather included in the headlamps) so I am not sure how to pull this off.
I'm fitting genuine RS4 B5 Xenon units to my car, once she's out of the bodyshop. Have had the headlamps, complete with the built-in ballasts, for about 4 years!