I installed my RCD myself. Started @ 5:30 am and finished around 9:00 pm. My truck is a 2003 2WD. It required some very large sockets, wrenches and a hydraulic press. Have a set of sockets that go up to like 30mm or so. It was pretty straight forward bolt on kit, didn't need any "customization" to make work. When completed I called a tow truck to take to an alignment shop, so I wouldn't trash my new tires, it was way off. It helps to have a helper, some of the pieces are quite heavy and large to manage solo. Plus bleading the brakes afterwards is easier with second person. If you have mechanical ability and the right tools go for it. Good luck.