Ok, I still have the questions in post #15 if anyone cares to answer
Ok I will try and answer this but remember I was basically answering the same question,
From what I can gather, It really doesn't matter if you do the top or the bottom. You are just trying to get the pinion angle right so whatever gets you there is fine, but I can tell on mine that the front axle sits slightly behind where it used to, so I want to push and rotate, so in my case I am going to do the lowers. But if you do the uppers you will pull and rotate. So something to consider if you have to push or pull too much maybe that will affect your shock alignment. I think sometimes people pull and push to try and get it back in the same place as it was but rotated for pinion angle. I hope that makes sense, but in my case I believe I can push mine slightly to get my pinion angle back without doing the uppers, but I wasn't sure that was something that people do. I imagine for a 4 inch lift to get it back in the stock place you need to push and pull, but I think just with my 2 inch I an push it enough. Although I will update if I end up doing it.
Maybe you need to pull in the rear and push in the front in that case lowers in the front and uppers on the rear?
Make sense and gurus like @Chris can feel free to chime in.