If you are looking for a bolt on IFS kit to put on your AD truck, I advise AGAINST purchasing one from RB's. First, I found the rack they sent me was bad (pinion yoke was missing some teeth). With this kit they send you drilling templates which at first appear to be clearly laid out, but the templates are indeed very ambiguous, not fit well to the frame rails at all. Long story short, I have had to do a lot of hole filing because of the crappy templates and for $1800 it SHOULD be an easy 2 hour job. I AM satisfied with the components themselves, but the installation was way oversimplified by the tech department. Not cool, people, dont give them your Money!