well...first off, this mod rocks! the kit is pretty simple. although i paid my mechanic to pull my shaft out....hehehe....(get it?) i could have done it myself, i just didnt want to. as for gains...well heres my input. the shaft assembly alone weighs 18lbs! 6lbs of that is rotating. i noticed a slight difference in performance and faster revs....plus thoes two shafts are spinning at twice the rpm as you motor.....i dont like that.anyway this has still been my most favorite mod.
ST CREW #62
put your motor where your mouth is.