I have had several clutch disc failures like the one pictured above
While I am not 100% on this, it appears that Sachs has discontinued multiple parts. In fact, the disc that just came in a new kit for a friend, is different. The number on the disc was originally the disc for a 944 S2. So, theoretically, it is stronger. I think they have consolidated all non-Turbo clutches to this S2 part to save inventory costs. If so, this is good for us as the new NA clutch should be stronger than the one that we used to get that always broke. I am particularly pleased as I had moved to a SPEC clutch with less than thrilling results!