you can find them in the classifieds here or on audizine. if you want a stronger file like j31 or pc16 i would just get the KO4 seperately and then buy the software by itself. you could call AWE and see what the price is. anyways, a clutch set up can vary in price. i would suggest southbend since i have a SPEC stage 3 and im gonna switch it for a southbend. for $400-$500 you can get a really nice clutch. youll need it for the torque these 2 files can put out. anyways, you can SEARCH AZ(audizine.com) more about the j31. i dont know a lot about it. you can even search it here, but im a noob on these boards and dont know how much its been talked about. and i say search because if you repost some people get cranky about it.

 

everyone seems to rave about southbend cluches, i am in the market for one, as my stoker is on its way out

here is southbend cluch's site: http://www.dxdracingclutches.com/home.html