That's a DX/Southbend kit, I bet Helix and Sachs have got kits as well.
What's the reasoning behind wanting a new clutch?
I had exactly the same fault with mine, after taking the car to seat 3 times they eventually took the box out and said the springs in the clutch plate had become weak and replaced the clutch and flywheel under warranty. They did have to contact Germany for advice though.Dragging up the past but I'm still looking, and clutch was slipping when I bought the car about 8 months ago. As it's been winter I haven't driven it very hard but I had a blast the other day and when changing at red line in 2nd/3rd/4th etc it just doesn't want to engage properly. SEAT can't find a fault...