So, in taking the anti-dive out of the front end they needed to alter the pivot mounting location on the upper A arm. When they did this, did they also alter the length and put additional camber gain in the arm design?
I don't know for sure on the any change in length. If so, not much since you still have to get to the right alignment. I could see a slight camber gain by lowering the front A-arm inner pick-up point. But not a ton. The effective lowering would be about half the distance the front pick-up point moved down since the rear didn't move at all.
They explained purpose of moving the front arm of the upper A-arm down is to reduce bump steer. Yes, that reduces the anti dive some, but they told me it is not eliminated. A car setup from some handling has far less nose dive than the worst case senerio B-body 383 wagon, which share the same geometry.