I sourced 1 light from a BMW spares place in Doncaster, the other light privately through EBay,it did take almost a month to get hold of some and they needed bracket repairs,it was a fairly simple process removing bumper etc...
I replaced the dipped beams with upgraded bulbs and the rear casing never re-sealed correctly and never managed to shift the moisture,by the time I got rear seals replaced it was too late
I have them now and they are dried out fully,just need a good clean,they work perfectly and are only a year old as BMW replaced them both last year but not the seals!!! - if anyone is planning a cut and shut or wanting pre-facelift lights they should be fine once clean....
I've got to admit I much prefer the clear look....
Chris