Saw that yesterday, looks incredible. Perfect look for these trucks but with an incredible ride. Makes me very sad I have 2WD
These are for 4wd only, per Carli's website
From what I understand they are still costing the performance system. I heard it should be out in a few months. They also doing a commuter system with fox 2.0s that will be out towards the end of this year, at least that's what I have read.