Originally Posted by Weasel

I think there are adapters available as I found in this random thread via google images.

here

Otherwise I believe I have the set of aftermarket h7 xenons with ballasts left over from my old E36 aftermarket headlights, 6000k. Don't think that you could wire them up to work without error messages as you had OEM xenon, but I had them wired up in the E36 with no error messages and no problems as I had plain old halogens in there before.

Philly X5, what are the production dates on the back of your OEM lights? If they are from before 10/02 they can be opened and modified. Mine came out great, and the lenses looked brand new after refinishing via sanding down then spraying with automotive clear coat at a body shop. Didn't take pics of lenses after re-cleared before being smoked, but here's some quick pics of what I did.

here and here