Nothing special. A few plastic parts in the shape of a wide U and a couple of bolts. They loosen a few things to keep the shaft from popping out of the front axle if you have 4WD (it's a PIA to put enough pressure on it and twist it to get it back up). I used a bungee type rubber band to hold the hub in place so gravity would pull it on the driver's side. Neglected on the passenger side and it took a lot of grumbling and leverage to get the damn thing back. To be honest the estimated 3 hour time the shops give you for this procedure is high unless you let that wave slide too far. . Still I would say it was 2 hours. You will need a hammer drill, a jack, and various sizes to remove the tire and hub, as well as a few other odds and ends. The guide walks you through pretty well. It's a very subtle but noticeable difference and should allow tires up to 33 inches to fit easily. Didn't notice any difference in ride quality.
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