Is the back a drum brake. The front pads and rotor will only take like 20 mins tops on both side. If the rear are drums, then it will take a lil longer if you dont know what your doing. Well, depending on what type of drum it is. The drum would probally take like 30 mins tops if you have no idea on what your doing. You would also need a hammer to tap the shoe off, and a long screw driver to put the spring on. if the rear is caliper, then it will take just as long as the front.