E82 123D stock springs - part numbers?

[dvenman]

I'm trying to find stock springs - front and rear - for my E82 with sport suspension ( S704AM option ) but RealOEM doesn't show the part numbers for them.

I'm not a fan of lowering the car, much prefer stock, but a small lowering would be acceptable if I must.

Any suggestions ? I'm based in the UK so that may make a difference.