I am calling this a good day's work.
First of all, just a bit on the timing. One of the things holding me up was that, like a lot of cars, the mark is a notched filed in the harmonic balancer. It's hard to see with a timing light, or even without the engine running. Consequently, I generally try to take a paint pen to it and fill it in.
The timing marks are a series of "fingers" on the front of the timing cover. For whatever reason-I'm guessing corresponding with when stroboscopic lights became more common-the marks were moved up to the top of the engine in 1972. If you set timing at max advance, like I prefer to do, it gets really difficult to open the throttle while also watching the timing mark. I had bought a nice pointer and tape kit that I asked to be installed that shows timing without using a dialback light. The pointer made it on, but the tape either didn't or fell off. In any case, I just spun the engine around to TDC by the bottom mark and put a paint mark in line with the pointer up top.
The timing was really, really off. I'd guess that setting to 10º static, I moved the distributor about 20º. I'm amazed the car even ran at all, and I'm just glad I didn't blow a hole in a piston driving it home. In any case, dialing it in to the universally recognized "correct" value of 32º BTDC max mechanical, no vacuum, the engine settled down a lot. BTW, I also confirmed the vac advance works(which it SHOULD since I had the distributor rebuilt a few years ago) since I forgot to disconnect it and I measured nearly 90º at idle. No wonder too the idle was racing so much.
Once the timing was correct-again timing first, then carbs, although the carbs have to be in the ballpark to get the dynamic timing right(BTW, got a steady-ish idle when I screwed the jets down another full turn)-I went to the carbs. I was able to get them synced nicely, then get the idle down to a reasonable number. Once I got the mixture set and reset the idle, I was super happy with how it sounded in the garage. I went in and asked my wife if she wanted to go for a ride.
We went out just for a low speed tour around, and it blew me away with how it was running. It's like I remember it from back in the spring when the engine was worn out but at least in tune. Once I dropped her off after a sedate drive, I made a small tweak on the mixture then took it out for a bit more...vigorous...of a drive. Let's just say I'm ecstatic. I still want to go through and do another round of tuning since I think I can probably get it dialed in better now that it's close(plus I want to get rid of the awful pointy iridium plugs the garage put in).
Not sure if I mentioned this, but the guy I'm trying to meet up with to buy an original front bumper(mine is a nasty, badly fitting repro) also came up with a set of 5 LE wheels when I asked him. They have tires-old and probably not driveable-but he offered them to me for a good price so I'm going to grab them. I can at least bolt them on and see how I like them, especially since there are tires on them. If they look terrible, no big deal and I'm not out a ton of money. If they do look good, I'll toss some good tires on them-maybe try the much-beloved General Altimax RT3.