Mine is on 52k now as has just started slipping, has been modified to around 300bhp for the last 10k.

Dreamscience do the RS clutch and they fit it as well, I think total price is around £750.

To be honest it all depends on how it has been driven in the past. It is a performance car, so if it has been driven like one then you are going to get premature clutch wear. If it has been owned from new by an old boy who never thrashes it, then no reason why it won't do 100k!