Questions like this are better answered over at places like TTORA and Yotatech.
But to wet your whistle, go to
http://www.trail-gear.com/ and look at their stuff. They sell an excellent kit to do an SAS (solid axle swap) on your truck. I've helped install one of their kits on a buddy's truck and it is really nice stuff.
Remember the term SAS as that's what you'll search for at the other forums.
http://www.yotatech.com/forumdisplay.php?f=116
http://www.ttora.com/forum/forumdisplay.php?f=18
and TTORA even has a forum for SAS...
http://www.ttora.com/forum/forumdisplay.php?f=7
And is you want to see the really hardcore, go visit pirate 4x4. Just don't post over there until you learn the ropes. They eat people that don't search first for breakfast, and you have to pay to search.
http://www.pirate4x4.com/forum/forumdisplay.php?f=12