I used lemforder and bought a full kit, front wishbones, rear trailing, and suspension mounts.
I bought them from a BMW parts distributer online and I'm pretty sure the lemforder ones are oem.
Definitely firmed up the steering and improved the ride as the car seems to soak up bumps in the road better now.
Was advised not to go poly unless its for a track day car as they can ruin the ride (especially the state of uk roads).
Got them from here, good service
http://www.bmwpartsonline.co.uk
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