So I was in the second week of the "fix the sagging door" project.
I rigged up some 16ft ratcheting tie downs to the bracing of the garage to support the door. This system worked really well, giving me granular control over the door while it was off. I don't know how I could have fixed the door by myself without this rig. You can see the door off of the car and being supported by the tie downs, which kept it vertical and in a position that could be easily maneuvered back into place.
I got the hinge pins and bushings from yearone, http://www.yearone.com/serverfiles/fbshopmain2.asp?input=hinge+pin&SM=1&SC=4
I also needed a door spring compressor, I got mine from Summit Racing, http://www.summitracing.com/parts/TTN-15040/, It's absolutely worth the 10 bucks, you'll spend more than that in frustration if you try to use a screwdriver. (I also wore eye protection).
After removing, and reinstalling, and trying to get the door to close properly for about the fourth time, I got the bright idea to use my Iphone with the Level application to measure the angle of the good door at the hinges, and set the hinges to the same angle on the bad door. (If you are just replacing hinge pins and bushings this is not required, but my door was not hanging properly even after the bushing and pin replacement, so I needed to adjust the hinges as they attached to the car. If you do not HAVE to mess with the hinges bolted to the car, don't.)
Some times your only purpose in life, is to serve as a warning to others...
During the measurement attempt, where I had precarious hold of the phone, it slipped out of my grasp, skittered down the backside of the fender, and disappeared into a crevasse under the body of the car.
After some encouragement and a couple of ideas to extricate the Iphone without taking the entire front end of the car apart from my friends on http://groups.google.com/group/FirstGenFirebirds; I went back to work.
I ended up taking off the formed mudflaps that the previous owner put on, I was going to remove them eventually anyway.
Removed the two main bolts on the underside of the fender, then three of the fender well bolts.
I had to remove the trim, and its supporting strip underneath that runs alongside underneath the door. (I cleaned this up, and painted the support strip with primer before returning it to service)
Once I had that done, I could pry the fender to splay the opening out a little bit, then using the mallet-coax technique that was suggested I could move the phone closer to the exit I had opened up.
Victory! It had a few extra scratches in it, but it was otherwise in working order.
Make note, when working with precarious grip, in tight situations, tie a string to your tool, just in case. It could save you hours of work.
Big props to the FirstGenFirebirds list for recommending the Flex GearWrenches. http://www.gearwrench.com/catalog/wrenches/ratcheting/flex_combination/setdetails.jsp?part=9701 I have a good compliment of sockets, and socket accessories. But I'm finding that these GearWrenches are so much easier and faster to use, getting into places that would be next to impossible for a socket set. If you use tools, you owe it to yourself to at least pickup a small set and try them out. Lowes, carries them, thats where I bought my set. I'll be buying more GearWrenches.