If you can wait 2 weeks for delivery go to Central Florida Motorsport and look at there clutch master kits, i reccomend the stage 3 version.William at CFM is great and they are more than happy to ship worldwide.
i have the stage 3 kit fitted to my ST170, you do get clutch chatter as the fly is only 12lb but only at idle with the clutch up. Acceleration will be greatly improved. Best mod i ever did.