Wrong section mate, this is 8L, not the 8P.
As for retrofit, its not as simple as that now, as new rules or laws out Jan 2012, state the car with xenons has to have the levelling & headlight washer systems fitted or mot failure & if pulled by Vosa or cops & visual inspection finds these not presewnt, fine or car of the road until they're fitted.
Also dont even go anywhere near a kit as it will blow other components that cost hundreds to repair.
If you were ever interested in genuine systems being fitted, give me a shout, not cheap, but so worth it.