well just got the truck back from the alignment shop..... interesting experience... the tech installed the spring for maximum lift (~4") then aligned it... took for a test drive and called me... said the ride was terrible... and it was... holy crap it was barely driveable.... bouncy bouncy over even the smallest bumps. (and the truck had a heck of a reverse rake)
Talked to the tech, and asked about what setting they installed the springs on.... after discussing and looking at the install instructions he discovered his mistake.... he was concerned that even on the lowest setting it would not fix the ride since the springs were "so much more massive than stock"... well long story short, they set the springs on the lowest lift position, re-aligned.... and man what a difference!!! rides better than stock, going over speed bumps stock it would take forever to "recover" and bounce around 3 or 4 times before settling out.... not anymore! Went to local store with monster speed bumps, ones that I had to "crawl" over before.... hit them at normal speed bump speed, barely a bounce, and almost instant "recovery".... lowest setting yielded ~2.3" lift (nice and level) in the front, and a huge improvement in the ride.... it was CRAZY the difference in the ride between the 2 spring settings... I was worried.... but not after my test drive home....
now for tires =)