some one did tell me before and sent me a link for it.
they had a much brighter interior light (the one in the roof) and they also had pics up of it from the outside with the light on. looked pretty cool and wanted to change mine.
Loads on ebay or try dealextreme. You need a 40 - 44mm festoon fitting or you can solder the wires on to the fitting if you get a flat smd led type which is what I ordered for £3.20 delivered.
Dunno which is why I went for the one I did which is just as easy to fit as it comes with a spring loaded festoon fitment with a wire. Not arrived yet but will be a simple fit and it has to be brighter than the naff one it has at the moment.:laugh: