Yeah all good advice so far. Extended brake lines will be necessary, if you havent bought them yet, you can try one of the west coast vendors; they should be abel to get them to you quickly. If you plan on doing it this weekend, go pick up some PB Blaster today and start spraying down all of the old bolts that will need to come out...try not to miss the hard to find ones...this will make disassembly easier. If you have some time, you may want to look at the hardware that is holding all of the suspension on; its not a bad idea to replace most of it with new Grade 8 stuff. It will be hard to figure out the sizes needed for everything, so maybe plan 1 day of tear down and one day to put it all back together with a trip to the hardware store in between. Sometimes the rear shackles on the leafs can freeze-up; the bolts tend to sieze on the steel sleeve, which can make them nightmares to get out. So you may need a sawzall to cut the bolt between the rear hanger and the shackle. Once its cut from both sides the bolt will come out easily; I had a tough time removing these a couple of months ago. An impact will help with disassembly...but isnt required. A 'breaker bar' is a necessity though to get leverage...1/2" sockets and a breaker bar will really make it "possible"...a standard 3/8" socket set is a nightmare. Also, there will probably be a few larger nuts/bolts that you will need to get special sockets (1 1/8 or 1 1/16) for but you can pick them up on the fly at your local parts store as they become necessary. Take you time and try to have FUN. Good luck.
John