Looks like it's off an 82 Toyota minitruck 4WD with carbureted 22R engine.
Probably matches the PS gearbox.
Edited because I just looked at this on a big computer screen and can see the PS pump is the crappy 79-83 style (same as US cruiser used through '87). But it doesn't have the load vac fitting for EFI, and has the bigger fitting & line, so not a 79-80. It's also installed upside down.
I'd like help identifying my pump if anyone can. The only thing stamped on the pump is 2812. I've been searching all day, po added Saginaw and this pump which I thought was Toyota but I can't find match.
Thanks, it is a crapcan but I want to direct replace or have it rebuilt as the bracket it mounts to lines up good and I don't know my options to replace under the alternator. The hack was performed in Costa Rica and by the looks was a junkyard find.
Gave up trying to identify the specific pump and found a replacement bearing for $8. Installed and working great, very easy diy with common garage tools. I still don't know what pump I have but it works.