OK so a tip for anyone doing this job. I took the rotor and caliper off and turned the backing plate 90 degrees and you have a straight shot at the ball joint, arm and mounting screws. Made this job as easy as 30 minutes or so per side. I guess I am lucky with no real rust, the ball joint came straight out with only a few taps on the arm. I even had to put the joint back in the hub to break the joint loose from the arm. I was anticipating a much more struggle but once you get the joint directly in front of you as opposed to working underneath, it really was straight forward and simple. Job complete.