Since 2005 I found -3.5 front and -3.1 rear with the rear sway bar on the edge of the bar on the loose side and the front was one inch from loose, to be where I like it, mostly neutral to a bit of over steer. Then Charlie mentioned for the new tires -4 front with -3 rear and that was way loose, I couldn't loosen the rear sway bar any more and didn't want to tighten the front bar at the track.
So my reasoning for the increasing the rear camber was to keep it close to the front camber and now have increased both sway bars about an inch, so this weekend will be an experiment which I hate to do, but have room for sway bar adjustment. I will not mess with the rear camber at the track, So I hope it works.
I love changing spec tires every couple of years and finding new set ups