1970 c20 power steering gear box

[GMC69]

My power steering pump has leaked since I got the truck in 2011. Not a huge leak, but it’s still a leak. I thought about rebuilding the box, but find it’s pretty loose also.

I’m looking at options of a rebuilt box. Looking at rock auto, even with shipping to Canada it’s cheaper than buying one from a local parts store.

Are there any “brands” I should be looking for? Rebuilding mine isn’t out of the question, but being that the steering is kinda sloppy, it’s not just a seal replacement.