The shocks can handle 1.5" Add-a-Leaf kits without issue. If the majority of your driving is on the street and the off-road driving you do isn't overly extreme and you want to maximize your ride quality, then the Fox kit is the better choice. The ICON Stage 2 Kit (or any other kit that comes with 2.5 coilovers) will have a stiffer on-road ride, though they can handle more extreme off-road uses.