Priming an oil pump isn't overly difficult. The peeps are correct you need to remove the cam synchronizer. Once that is removed you can use a drill with a 5/16 deep well socket and a long extension hooked up to a drill. Be very careful not to lose the socket. They also sell tools for this and you will not need to worry about losing the socket in the motor. As far as knowing if you are getting oil pressure. Believe me you will know it. The drill will slow down quite a bit and you will feel the drill trying to torque out of your hands. I usually prime the system until I see oil coming out of the top of the rocker arms. This way you know all of the lifters are primed and oil has made it's way to the top of the cylinder heads.