Originally Posted by theprf

There is no good way to restore the reflectors as they are metal plated plastic. I know some guys had some VW Corrado E-code headlight reflectors replated, which was very expensive and did not come out all that great. (Corrado E-code reflectors in good condition are complete unobtanium.)

You will probably need to replace the headlights, or perhaps you can find a set of 996.2 headlights with good reflectors and swap the Turbo outer lenses onto them, or perhaps the reflectors can be removed from the headlight without removing the lens and swapped that way.