I did my body lift about 15 years ago. In addition to the earlier items, there is the need for few bumper brackets if you are dealing with a stock bumper as there will be gaps between the body and the bumper, and then there is also the gaps in the wheel wells between the frame and body. The rears are not that important, but in the front, that lets a lot of mud etc into the engine bay.
ON a 2" inch lift you might be able to get away without major adjustments to the hoses for the radiator and gas filler tube, but mine was 3" and you may have to get new hoses, extensions, etc.
Also, on a 3", the kits should come with a new steering shaft extension.
Other than that, the other lines etc, can be left stock, but you'll have to unbolt some of the clips etc, and relocate them and or bend the lines to take the stress out of them routing. Then's there is taking apart parts in the interior to get at the body mount bolts, and likely when you do this, given the age of the truck, you might find a some (or a lot) of rust issues, so be prepared to fix that while you've got things apart.
It's a lot of work, and outside of more tire clearance, the only other reason to do this is for more clearance in the engine bay for what I did - a SBC engine swap,a nd more tranny tunnel clearance for that. There used to be a few manufacturers that sold specific kits for Pathfinders/Hardbodies, but I don't think they're available any longer - just generic kits with the spacers and and some hardware, and I think there may be a few aftermarket suppliers that still have the wheel well lift lips.