I just mocked the rear axle. the rear shackle hangar needs to be moved forward just a tad to correct the shackle angle. right now it is about 13 degrees (no added weight on bed). I'm guessing it should be about 20-30 degrees (with 200 to 300 pounds added on the back of frame to simulate the springs settling) I am sooooo happy with the ride height with no body lift 
I would move it forward 2 inches. Looking good.
