have been looking into this also recently , their are kits available ranging from £43 if you just want the lenses and angel eyes , up to £115 if you need the full kit , lens angels eyes and hid kits .
have worked out that you can actually do it a lot cheaper if you buy the part separate , lens and angel eyes £35 ( from china though ) , and ballast at £5.15 each (2 required ) from a uk supplier , then the bulbs ranging from £6 for a pair (china supplier ) to £10 uk supplier , then all you have to do is pick the color of the bulbs 4.3k to 12k , standard options are usually 5k to 8k.
Then you have to open the headlight units to fit the lens kits and reseal them , their is a thread in the forums where someone has already done this if you do a quick search.
just make sure to order the correct types . LHD / RHD
Last edited by Andy400; 10-01-2017 at 20:57.
Reason: added info