I did my pin and bushing replacement today - it took about an hour and a half to finish. The first door took the longest. Just thought I would post a few thoughts/pointers for the next guy:
1 - I used Nissan parts cost $40.00 including taxes for all new parts (pins, bushings, and e-clips). The doors work like new again,
I no longer have to bump the door with my shoulder to open it, and the gap is equal top to bottom on the front of the door.
2 - The roll pin looking pin that holds the door retainer? (the thing half way up that stops door from opening too wide) - make sure you remove from the bottom - you will have a hard time trying to drive it through from the top - don't ask how I know!
3 - Make sure that you disconnect any wires that go into the door prior to trying to remove the door.
4 - Spray the pins with a good penetrating oil - makes it easier to drive them out.
5 - You may want to put some tape on the leading edge of the door and the trailing edge of the fender to keep from chipping the paint off either edge.
6 - The e-clips are easy to install - especially if you drive the pins in far enough.
7 - The best tool that I had in my box for driving the pins out/in is a 12"x3/4" brass drift. The same drift worked great for driving in the new bushings.
8 - I found it helped to have a jack handy to hold the door up while trying to r/r the pins (that is until a helper came along with a beer, then she was enlisted to hold the door)
9 - I laid the door on a blanket on the grass to r/r the bushings.
Hope this helps, it really is a pretty easy job - just take your time and don't get frustrated.