Don't think your allowed to like things twice or three times here ! However the above statement is Soooo true! The average clutch {job here} for the I shift M drive is By the time the dust settles close to ten grand flywheel clutch actuator s and rigging all should be replaced or it could screw you over down the road ! To top it off they program the trans to start off normally in 4th gear this tends to wear the clutch out even faster depending on the trucks job ! Just a note to anyone buying these do your self a favor and have your dealer program the trans to start out in a lower gear It can be done the option is there just got to do it! Clutches ARE NOT PART OF WARRANTY after a year or so, also warranty DOES NOT PAY FOR DOWN TIME! So if your temped to buy an auto trans be sure to buy extended warranty! As with ALL Manufacturers you should anyway as the rest of the truck is susceptible to emission issues anyway ! And quite honestly Big V / Mack ain't the only Guilty party here You can Bet Everybody has the same Agenda!