For the ¢ it might be worth.
Being an old body man, I might be able to shed a little bit of light into it.
The Body men, i.e. the guys that would actually work on preparing the area for paint, and painting it, detest, hate, and otherwise abhor GREASE WORK, aside from their thinking that it's just messy and generally a huge PITA.
The mechanics, (and here I can only relate what I've been told) hate body work because: "that sh*t never comes out right" and why go through all the hazzles of removing stuff that ain't broke. And just who is going to remove what and be responsible for the stuff afterwards? (i.e. electrical wire harness', fender rubber, body clips, adjusting all this body stuff back together)
To work out a compromise, might mean that you take it to one to have certain work done, then to the other and back to the first to finish it.
If you are already planning on having the engine and tranny removed for other work, then you're half-way there. If you'll be removing the master brake cylinder, the vacuum assist and other parts currently bolted to the firewall, then you are really getting there. Removing the electronic items, relays and wire harness might be something that you need to undertake.
Bottom line, you might have to do some of the work yourself, but this beats the "it'll take years" estimate as well as the "there's only one RIGHT way to do that".
Winoman's post succintly states what you have to do. Probably the hardest part is routing the tubing and wiring harness in and out of all the corners and openings.
The old method of labeling wiring harnesses is good, if you're real anal about making sure that EACH AND EVERY wire that you have on that loom is labeled and identified as to connection, and in the case of the Z's the ones that are NOT connected (fog light, auto tranny relay, etc).
If you have access to a digital camera or a polaroid and you don't mind the cost of the film, make sure you take and PRINT good COLOR photos. Then label the photo on the back and identify which sequence step you were on.
Something like:
"Step 7 Connectors at RH Front Fender, leading to Wire Harness along front of car. Note rubber cover over connectors --torn, TO BE REPLACED,"
Also give yourself special notes that help identify problem spots such as: "Brake lines over frame member, NOTE MOUNTING" as well as reminders "10mm bolts holding bracket, note sheet metal screw holding cowl"
This may seem just as crazy and anal as labeling each wire, but the next time you're trying to remember whether it was a black wire no stripe or a black with a white that went to the Right Hand side of the Coil, and how the **** did I tell myself I was going to remember which side was the correct side anyhow, and you'll thank yourself.
I've replaced the entire wire harness on my dash, as well as added and corrected items necessary for mine (AT vs Manual), and this method makes it a cinch to refer to the area and play connect the wire.
Good Luck
