For lack of response. I thought I would try to add something....slightly unrelated..On my 1995 Jeep YJ that needed these replacing, it was cheap and easy. Cannot comment on the RR though. However my trusted garage always seem to know what to do and what is involved. Maybe take it to a professional you trust, or three and get different opinions and see what they say. I think I paid £25 for the replacement buses on the Jeep and it was an hours labour. In absence of any other responses, I would talk to a few local garages that know the cars and see what they say. They might give you a clue you can do it yourself, or it's a real pain. Let us know how you get on?