I do like what you've done, especially the part where you took a great deal of effort to explain how the steps related to each other, and how each step of your process is built upon the last. Marking nails and using them as guides is brilliant, as is your writing on how and why.
The only thing I would add is to color-code top, middle and bottom. I put paint on everything, but in order to make the different pieces make sense, especially with the different pieces of pipe as spacers, that's what I'd do. Red-yellow-green or something, before they get bagged in the future (like you said, for paint or patch-work).
As has been pointed out, I did record all of my advice to "future me" here, from my wiring diagram and fuse arrangements to wheel offsets and sources for parts. I was counting on the old site to be my archive, and most of my critical stuff was in the captions for my build's photographs. I didn't have a reliable computer at that time (2005-2007), and was spending long hours every day I wasn't at work literally buried in a garage. It was quite a lot of information, and none of it got saved in archival form.
I think it's safe to say my entire build was documented here, from the time I cut into the body with a reciprocating saw and threw away my perfectly good Speedster seats, right up to the day I did a burnout leaving the garage.
It's all probably searchable, but there're just hundreds of posts and thousands of detail photos out there -- floating around -- and searching them out is like throwing darts into a lake to catch one particular fish. I find it frustrating, moreso because I'm old enough now that I'm beginning to forget things I know I typed up.
Stan and Danny have brow-beaten me sufficiently. I've got a little more time than I did the last time this came up, and maybe a little more patience. Your efforts are much cleaner than mine were. You're writing with brilliant style, and I think I might just have to settle into a comfy chair now and again and check in on what's happening here.
No promises, but thank you for doing interesting things.