I have a 14 pound 7 1/4" race clutch for sale it is new.It bolts to an automatic transmission flexplate. I have one for any of the GM crank bolt patterns. it has a torque rating of 1232 ft. pounds, capable of very high rpm, inexpensive to rebuild and long lasting. Similar clutches have been used by the track champ at macon speedway in 2008 and 2010 and the Illinois street stock champion for 2009 and 2010 and the fastest qualifier at the Illinois Street Stock Championship race in 2010. Got any questions just give me a call. Frank 217 502 4038