Well since we fulltime and pulling a 40' fiver with our 2003 Ram dually quad, the throwout bearing went south at only 189,000 on the clock. Absolutely no problem with that. Was on the road and a shop put in a clutch that only made it 29,000, something wrong with that! So 2 months ago while at our snowbird location in Yuma, AZ., I had a South Bend clutch along with the hydraulics installed. Can't tell you anything about how it is or will be since there is only about 3,000 miles on it. I do know that the throwout bearing on the SB will probably be the weak link. Only aftermarket stuff on this truck is the exhaust brake and fiver hitch.