the rear axle will need leaf spring perches and shock mounts. the front axle will need link mounts and coil buckets. A few different companies sell kits for the front axle: rubicon express, ballistic fab, tnt customs, and I think there is a couple more. You will need a new steering setup (buy or build). You may need to shorten the front driveshaft because the nose of the pinion is a little longer but you may not have to. The 1310 ujoint in the front will work with the new axle however depending on what rear axle you have it may not. If you have a dana 44 rear or dana 35 then you will probably have to get a 1310-1330 conversion ujoint. If you have the 8.25 then I believe it came with the 1330 ujoint you need for the 9in. You would probably want to go ahead go with disk breaks for the rear as well and there are different ways to do this as well.
Heres a couple of links to get you started.
http://pirate4x4.com/forum/showthread.php?t=600900
http://pirate4x4.com/forum/showthread.php?t=600343
http://pirate4x4.com/forum/showthread.php?t=610646
http://http://pirate4x4.com/forum/showthread.php?t=601576
this one has a custom rear disk brake setup.
Good luck.