Its simple and fast using a larry tool and an air wrench. The TDC method is much faster than taking out all the sparkplugs and screwing in the air fiting on each cylinder. I can't imagine having to do that, that would suck! I also think if I didn't have a pen magnet and some grease , dealing with the keepers would have been a chore. I think the biggest pain of the cam swap was using my block and radiator as a punching bag haha ow!