Yeah i thought the same thing, Kier wilson explained it to me and showed me the differance between the clutches. Somehow the quad plate puts less effort on the driveline than the triple. if indoubt feel free to give Willalls a call, they had the trpiples in both there GTR's and now run the quad's as they found them easier and more friendly to drive. YEs they are the OS distributers here in S.A and would try to make a slae off the quad rather than the triple but i got the quad at the same price.