Great to hear. If you leave the code alone, it should disappear within a few start cycles.
I looked over the pictures again, and the timing looks correct.
I noticed that you had used RTV on the inside of the timing cover on surfaces that mated and are sealed by O-Rings. My preference would have been not to do that, but if anything that isn't meant to be there breaks off, there seems to be a straight path to the oil filter or bottom of the oil pan.
With the main issue pretty well handled, I was curious to ask if you are operating a machine shop
. The parts look like they have been cleaned with perhaps a little more than a toothbrush and elbow grease.
Solvent + sandblasting?
Also, are you planning to leave the car as is, spaced with washers or do you intend to remove the transmission to replace the rear plate?
If you can't locate the original or can't find a replacement close to you, let me know and I can give you one that I have.
You'd have to pay shipping from St. Louis, but maybe you have the ability to make something up faster than the postal service can deliver.