You can source the parts through ebay.co.uk at a fraction of the price <£200, also you can try Euro Car Parts.

I am based in Wembley and I can put you in touch with a mechanic local to me that will do the work for a fraction of the cost - he MAY be able to come to your home to do the work.

If you are interested send me a PM and I will give him a call to find out prices.

Regards

AR