How to find front springs for my B7 140 bluemotion sport estate?

[tonyhart]

Hi all
I've spent an age searching fro new springs for my car and cannot find any that I am confident are correct.
I suspect 312mm is the correct free spring length fo my sport model vs 348mm for the non sport.

Anybody got advice on how to identify the correct springs?
Anybody know what the correct springs are?

Thanks, Max