As a matter of fact, one of our members here, gave me his OEM sp2 clutch pack. I'm going to install them into my SP1 as soon as my Barnett discs wear out. I've researched it quite heavily, it will slip right in and fit fine. I really want to get rid of that occasional sneaky judder that my clutch still gives me - (when I least expect it). I'm hoping the sp2 clutch plates and discs will get rid of that.