i installed 2- '03s and 1 - '04 and the only issues was shielding the slave cylinder from the radiant heat off the motors and you need a clutch arm stop so you don't over throw the pressure plate or it will lock open. either than that no problems that i know of to date. the zx9r is a killer motor too, I ran one of those in a personal rail for 2 years and it's still running glamis to this day. he's been in the fuel pump once and changed the chain twice in 7 years. that was a light chromoly rail that was about 785 lbs if I recall correct with blaster 26's on the rear. that motor ran circles around the 929rr I built to replace it!
