i have to say i was very dissapointed by them...i called up there today wanting a clutch that would hold up to my specs and he said he couldnt help b/c i spun off the south bend that i had....he said he didnt have any thing that would hold 400hp with off road use and trailer pulling.....hes full of sh!t.....i know they can make one or can sell one he just didnt want to take the time to look the parts up.....it really kind of pissed me off so i just called south bend and ordered the next hp upgrade clutch faceings......should hold 450ish hp....even though im about 100 hp less......