Thanks, Tools, but got 'er done now.
I returned to Autobone and fetched back the one I sent to their return bin. Worked perfectly. Saved the truck being down at least two days. Wife happy she gets to go to market on Saturday as usual. Truck starts every time now.
Maybe answered my own question, but I suspect any of the particular OEM starters mentioned here or their remans will work on any 1FZ 80 series. Dunno 'bout diesels.
The one I got, returned, then retrieved and installed is apparently one that is the winterized one, which seems to be indicated by the 9 tooth gear. It really zips things along when you turn the key compared to the old 10 tooth one -- at least when it was working.
I suspect the shrouded drive gear indicates its core was originally from the fabled rare 93 starters, assuming that's the identifying feature. I think it's most like only 2.0 kw now and not 2.2 kw, though, due to being remanned?
Anyway, I just wanted to ask that because all the emphasis on starter ID in this and several other threads, while interesting and useful, had me thinking it actually mattered what works on the truck. They all will and that can be important in a pinch, getting down the road, whatever. I'd have preferred a Denso, in fact probably would've given one of our always helpful Mud vendors the biz, but the lack of a tag had me in a quandary. I needed the truck running, didn't want to drop the starter just to count teeth, for instance. Now that I know it doesn't matter, any of them will fit, never have to sweat that, just figured I'd throw that out there so people know. I'm actually glad to step up to the faster starter drive. It gets cold here sometimes.