The parts are here! I guessed wrong on the tuner bushings, but I found that could rob them off my Kay KB-2 bass with the warped neck. I also grabbed the strings off it, since it's not a player at this point, and installed them on the Lyle.
After some meatball setup, I can tell that both pickups work, and I've managed to get it playing OK except for fret buzz on the third fret of the G string. But I'm going to leave it strung up for a couple of days to see what shape the neck takes. Between gluing the fertboard back on and whatever odd forces the truss rod may have generated, I think it deserves some time to settle in.
It sounds decent, but I still have a lot of cleanup to do before I know what it's capable of.