I put the rear shocks on last night, well my son in law did anyway. I was still getting my tools sorted out and I heard him from under the truck say "well that's one down"
Definitely improved the ride, smoothed out the bumps on the roads I travel daily a lot.
I think the rear shocks made just as much difference over the stock Ranchos as the 5100s did on the front.
FWIW, we put them with the boots down.