I have a body lift on my 99, a PA 3" with some modifications.
I have a few parts I modified myself and I added parts from Roger Brown.
I used a Roger Brown steering extension.
I bought a 1 pc replacement hose for the fuel tank vent and axle vents instead of using the cobled together parts in the kit.
For the body pucks I bought new large fender washers, larger than the diameter of the body pucks and used 1 between the puck and body and 1 inside.
My kit had bumper lifts for front and rear that I welded plates to to strengthen.
If you have a reciever hitch on the back think about modifying it to lift, move forward a few inch's, and plate for strength.
Somewhat easy to complete but plan a weekend in case you have issues.
Doesnt change ride quality much, poly will transmit a little more vibrations than factory rubber.
Air tools, multiple floor jacks and bottle jacks, along with an assortment of wood blocks should make the job go fast.
If I were doing this again I would probably use a Roger Brown body lift, more expensive but has better quality parts.