It's not too difficult but will take some time and patience, you shouldn't need anything beyond the normal selection of hand tools. You may need someone to put weight on the axle as you try to stuff the coils in, and yes the track bar must be disconnected. Hooking up the track bar is not difficult at all, no ratcheting required, do it last after everything else is done. Put the wheels back on and with the truck on the ground have someone turn the steering wheel. This will allow you to align the track bar with the mount using the steering as a mechanical advantage, no effort required.