here's a pic of my rig - 4" lift, and lots of trimming. Mine's a bit deceptive because I cut the bottom 5" off of my truck.

you might consider running a 4" spring up front with a longer rear shackle. the stock rear shackles on these things really limit compression - as the spring hits the frame very quickly. running a longer rear shackle can gain you an inch and a half or so. I personally like the look of a forward slant, but if you don't, you could run an add-a-leaf in there for the extra inch to level it out. I think it would ride better that way than if you ran a 6" spring.
Because the stock shackle is "tension style", a longer shackle would lower the truck.
Steve Fox said:Our new shackles along with the 4 degree shim raised the front end by 1-5/8" allowing more than enough room for spring compression as well as much needed room for our 36" swampers without the need for higher lift springs.

I was referring to the rear shackle on the front springs.the stock rear shackles on these things really limit compression
