Shawn good stuff here. Just about the way I run mine . I add a 1/2 leaf to the top front section befor clamping 2800# SS springs. And I use a shackel that is 1" longer in the rear. I use a shock from a Dakota 4x4 I think it is a gas shock. I have found that more than 2" sill differnce front to back does not pitch rotate as well.
The set of springs I have in the car now were 3800# SS-springs that I took leafs out of to match my 2800# springs that were twisted in Mexico. When I put the 2800# spring next to the 3800# spring what I saw was that if I took out 2 leaf from the 3800# I had the same lenths on all the leafs as the 2800# spring. So we will see if these work ok or not. By the way my car is only 2840 with out driver.