multilink

I'm currently looking to replace the rear multi-link arms on my w209 CLK55. I've had a look on EuroCarParts etc. and was wondering if I could get some advice on which ones to go for. My understanding is they're shared between different models/chassis? Could anyone recommend a manufacturer to...

Brand new boxed Delphi Rear multi-link control arms kit. Brand new boxed. £135 Plus postage. Or can be collected from Sheffield.