I've ran the Exedy Organic clutch/flywheel setup for about 3-4 years now and it still holds and looks like new... http://www.coximport.com/exedy has the best prices on them. $283.00 shipped!!

(my clutch has been through: 9psi JRSC, 9800RPM Built N/A setup, 16psi Turbo Boost, and 100shot n2o setup, and now my ITR motor) I'd recommend this clutch to anyone... cause I beat the hell outta my car and its still going strong.. This clutch has seen so many 8000 RPM full out drops at the track I've lost count... no slippage once so ever.