so my clutch has started slipping in 5th after 116,000km and i thought no worries i'll just get a heavy duty after market one.... no so easy

Turns out there is a lot of confusion as to if these cars run a solid or duel mass flywheel. I have read all the posts on the web i can find about this and there is no clear indications as to how i go about getting a replacement. Basically i am looking for a clutch and flywheel setup that isn't going to die after a few hard launches off the lights. Can anyone help me out as to what i should be looking to buy as a replacement with out spending huge money? maybe getting one from the states or something? Surely there must be someone out there with the correct information,

cheers