We are using the patriot three disc. Great clutch. In order to accurately set the stall speed, you will need a torque curve for your engine (from a dyno). The clutch stall should be set 400 to 800 rpm below the torque peak. Lacking a torque curve, if you are using an sr-y pipe, the stall should be nominally set at 7600rpm. If you are in an open pipe class, the stall may vary from 9000 to 10600 rpm, depending on the pipe (we are at 10600 with a tsow pipe). Hope this helps.