has anyone done this?? I am thinking I am going to get everything all the way from the master cylinder and brake lines, to the E brake cables & such... has anyone done this swap?? Also, I am getting a Dana 70... I have an 80 in mine right now, but I couldnt pass up $175 for a full rear end with discs, especially since my ring & pinion is shot... I need the disc brakes to pull my 9,000lb boat.