I am going to be putting on six inch BDS springs in the front and back. Adding on ORD greaseable front and rear bushings, ORD front shackle and main eye bushing kit, and the steering box brace. So, what other parts will I be needing, other than brake lines? Right now I have a 12 bolt and D44. I will be putting in a 14 bolt and 8 lug D44 before too much longer. Want to rebuild both before I put them in. Will there be any issues with putting the lift on and then swapping in the other axles at a later point? This is my first lift so want to be sure I have everything before I jump into the process.