Only place to get proper xenon S3 headlights is a dealer at around 500 a side... After market ones are all halogen... You can use a hid kit but technically it's illegal as the cut off pattern is incorrect...
Depending on what your definition of 'past it' is there is a thread in the faq's for polishing the lenses when they go milky and a few threads (including my own) showing how to convert aftermarket halogen headlights to use bi-xenon projectors
Thanks Tuffty. Lenses are a little gone but the self levelling does not work and they have been bodged and bodged again hanging on by a DIY fix. I had hoped of an after market solution to replace.