Bilstein Cup Suspension

[stevorally]

I am building a rally car and have been looking for a set of Bilstein Cup dampers and springs. These were developed for GM eurosport as a clubman damper for use on both gravel and tarmac.

I have been offered a set of dampers, i'm not sure if they are the proper 'cup' kit. They have a identification number on them, but can find no reference to 'cup' on them anywhere.

What I am asking (finally) is what is the Bilstein identification number for the original cup kit?

Thanks

Stevo