Question: Not enough Caster adjustment in my big block Duster.

Set the ride height FIRST. Then put the front cams all the way out and the rear all the way in (that is the orientation of the bolts). Then bring the rear cams out until you have about 1/2 degree of negative camber. That is the most positive caster you will get out that car. The more rake (front low/rear high) the less caster you can get. Set your toe and you're ready to hit the road.