Putting a 14FF in a \'96 GMC I am going to put a 14 bolt in my '96 GMC and have a few questions. When I do it I am going to also install ORD's shackle flip and new 4" springs for about 8" of lift. WHat needs to be done with the driveshaft to be able to hook it up?? Will I even be able to use the stock one? The axle also has disc brakes, other than longer brake lines what do I need. Will the stock master cylinder work for this? What about ABS, I know it has it on the front but I'm pretty sure there is none in the rear, is that right?? Am I missing anything else?? Thanks.