I finally found some info on how to do this on another site (dieselplace.com) as well as a manufacturers site for an aftermarket pin replacement system.
Anyway turns out it's dead easy...
Locate and unplug the connectors for the wiring to the door. On mine there was 2 plugs behind the trim on the driver's side down by where your left foot would be and 1 up in the fuse panel. Once unplugged pull the wires out through the hole. Now undo the 3 10mm bolts. 1 on the strap and 1 on each hinge. On the NBS trucks there is no hinge spring so you don't have to worry about that. Once the bolts are undone and the wires are free just lift the door off and set it aside. It will slide right up and off no problem. I did it by myself. No jack needed.
The factory pins need to be cut off. I used an angle grinder with a cut off wheel and just cut the bottoms off. Once cut off just bang the old pins out, bang/pry the old bushings out. Install your new bushings and pins. Lift the door back on (again did it by myself no problem, dropped right on). Reconnect your electrical stuff, put your trim back on and you're all set.
One word of warning I read in the info I found and make sure you remember this because it will be easy to forget. Make sure you at least feed your electrical connectors back through before you close the door. If you don't you'll ruin the connectors for sure by smashing them in the door. The temptation is to test the door as soon as you put it back on. All together maybe 1 hour by myself for both doors. The garage wanted $220 parts and labour to do this. Cost me $20 for parts.
Hope this helps someone.