Anyone know what a std 06 STi clutch will hold for torque and HP wise?

Would be nice to know before changing too much

 

HP is irrelevant to a degree. Torque around 380lbft they seem to hold out fine for drag/track use. 450lbft+ for road use with occasional track use. (this is based on a JDM clutch, not sure if they UK set-up is the same).