Well howdy again. I wanted to make a quick post and update the leaky power steering situation. It's fixed. I got a new pump from Napa. I can't remember the part number, but when I cross-listed the pump
@orangefj45 recommended, it came up for a 1978 Chevy pickup with a 350, so that's what I ordered. It fit great, with a slightly longer and more bent return line nipple. I was able to straighten the return nipple out with a tubing bender so it actually works better now than the one I took off.
FYI for saginaw folks - invest a couple Jacksons in a pulley puller for PS pumps. I got one from Amazon in a blow-molded case for like 35 bucks. Having the right tool makes this job much much easier. If you take the pulley off with the puller with the pump still mounted, you don't have to remove the bracket from the block. Much easier and less time consuming. For install, just install the pump, then use the tool to install the pulley. It has the advantage of allowing you to align the pulley with the other pulleys shared with the belt. I just eyeballed it, but I'm happy with it. Another plus is the pulley tool does not put undue pressure on the pump shaft, so there is no danger of breaking vanes or otherwise damaging the pump when you install it.
I also replaced both the pressure and return lines with the kit from
@orangefj45 and they fit great. The return line is a tad on the tight side, especially on the pump return nipple, but better too tight than too loose. Giggity. You have to use the clamps supplied as the super cool Toyota factory PS return hose clamps are too big. Slight bummer.
I saw the thread where folks were struggling with getting the saginaw on and off and keeping it from leaking. Just use the right tools and do not use o-rings on the pressure fittings. In my experience, hydraulic fittings of the type on the PS lines don't need them and they just cause leaks.
Anyway, the steering is now butter smooth and fully sorted and leak free. On to sort out other little leaks and issues. I'll do my best to keep the thread going. As previously mentioned, I kinda suck at the forums thing. I don't have just a whole lot of free time between work and kids and girlfriend, and I much prefer to spend it actually out in the garage wrenching.
Future plans - Smog system refresh, registration, h55f, paint restoration, correct the lean, fix the AC. Not necessarily in that order.