weren't some Audi A6 or S6 bi-xenon projectors, made by HELLA same bolt-on to the OE pre-facelifts?

I know for a fact that they were, as I did the bi-xenon conversion to my 4.6, but it was several years ago and i think i am getting old here, and don't remember what i had done at the time... But... this info is somewhere on this forum - where else would i get such a crazy idea in the first place??!!!

but those were the lenses, not a bowl...