Well, I knew this was going to happen. I tool pretty careful pictures and notes about the "big stuff" on my engine, but not so much when it came to all the hoses, sensors, heat shields, connectors, etc., especially since I thought I would be re-assembling in a few weeks, not the nearly year(!) that it's taken to get all the parts back.
Anyway, I have a couple of mysteries. The first is a pair of M8 threads on the left side of the block, just in front of the air/oil separator, near the bottom of the block:
No idea why only one of the threads has a bolt in it...
The second is a fairly small heat shield, for which I can't match up the holes to any of the threads:
If anyone who's rebuilt their engine, or had someone else do it and took pictures along the way, and can clue me in as to what these items are, I'd really appreciate it. Thanks.