VW, Audi,SEAT and Skoda all use the same 1J0 412 331 C top strut mounts on all their "Mk IV" chassis cars.
The only other strut mount listed is one fitted on a 2002-2006 SEAT Cupra Leon R: 1ML 412 331
Large Pic here
I ordered a pair to see what the difference was to the "stock" mount.
Dimensionally, they are absolutely identical, however, they felt appreciably harder straight out of the box.
I had both the stock ones and these tested with a Durometer and these are the results:
1J0 412 331 C (Stock VW) = Durometer 50 - 55 (hard to get an accurate reading because its so soft )
1ML 412 331 Leon Cupra R = Durometer 80
If anyone wants to get these mounts, they are only available through the SEAT parts network - VW/Audi/Skoda don't carry them at all.
... and here is some icing on the Cupra R suspension bush cake.
Lower cast control arm front pivot bush is also an upgraded item:
Part number is 1ML 407 182
This would only fit in the R32 style cast lower control arm which has a larger diameter bush than the old pressed steel versions.
On order as we speak!
Update on front A-Arm bush: Physically identical looking but the rubber used in the Cupra R bush is definitely harder around the centre metal piece using a fingernail test - could not get a Durometer reading because of the design of the bush will not allow the Durometer to get a proper reading
The rear A-arm bush is the same as ours with the solid rubber centre.