G'day all!
OK, so after a bit more searching; and almost zero discovery, I've come to the conclusion that there is no power steering box replacement.
I've looked at a few South African brochures for the C10, as well as an Australian brochure - and it appears these RHD export trucks were only available with manual steering. There wasn't a power steering option at all, so it's a good guess that GM/Saginaw never actually made a power steering box for these trucks during this era.
I have however given my manual box a clean and discovered a bunch of numbers I didn't even know were there (that's how thick the rust and gunk build up was).
Can anyone shed some light on these numbers? Would love to know what they mean.
Cheers,
Russ
You can click on the first image to get a higher-res if desired.