Mine was about 10 hours start to finish, but we were pulling the lift off of one truck, to put on another. We had two people per truck. More only gets in the way, unless you can get the whole truck up on stands at once, and two do the front, and two do the rear.
I used an 8' 4x4 post to help compress the leaf-springs after I had clamped them, to removed the clamps, and again when I re-clamped them later. This is for when you take apart and put the spring-packs in the rear back together after you add an add-a-leaf.
I'd say 5-8 hours is pretty good, with a new truck and all the parts actually there.
But plan a whole weekend, and alternate transportation in case something goes wrong. Since you're truck isn't fresh off the assembly line, expect problems. Especially if you're in an area that salts in the winter.
Soak everything in wd-40, each night for 2-3 nights before the planned day to do the work. If you have air-tools, they will be a HUGE help. I'd have hated to do mine without them.
I'd also make sure that you have all the bolts that the instructions say, and check that you have every size socket you need.
Shouldn't be any problems beyond stuck bolts that need wd-40 and impact-wrench persuation to come off. Don't forget a set of easy-outs in case you shear a bolt.
However, I'm trying to figure out how the track-bar and the rear-end are related? We didn't bother disconecting my track-bar, but I didn't have a relocation bracket.
