I'm sorry, no, this was a few years ago. We used to buy them from a local Opel dealership here in Norway, they usually had to order them as they didn't have them in stock but normally it only took 2 or 3 days and it wasn't too expensive either
At the time it was only listed for the Rekord E even though it would fit most CIH engined cars, so if your local Opel dealer has a service minded spare parts department it shouldn't be too difficult to find, we just asked for the "caravan clutch" for the Rekord E
If they can't find it let me know and I'll drop by the dealer that used to sell us these and see if I can find a parts number for you. I no longer live as close as I used to but I'm usually in the area about once a week so it's no hassle, I'd ask at the local Opel dealer if thought it was a remote possibility they would try to help but even inquiring about parts for my 99 Omega usually results in a blank stare and it's like you can smell the fear ...... OH MY GOD THIS IS A QUESTION ABOUT A MODEL THAT ISN'T CURRENT, WHAT DO I DO NOW !!!