see the problem is with an auto clutch there is actually 2 different clutches in the case... its not like you just swap out one piece and bam you have an auto... there is also a clutch in there that slips when you are in too high of a gear so that the motor doesnt stall... (think about being in 5th gear and trying to start moving, theres no room for the clutch that allows the motor to at least not stall)