Ok - small update, but lots of things learned about the 1980's B-series van/Ramcharger PS bracket. This is what I had to work with, which didn't make much sense:
Enter a few photos from various Ramcharger sites:
"So that's where it goes." Turns out the PS pump was cockeyed all this time due to the wrench adapter being moved up top.
Now knowing how Ma Mopar intended its installation, I went ahead and installed the 1989 brackets this evening. I put a washer at the bottom to space out the bottom bolt, which would have originally been spaced forward by the magnetic pickup adapter, but otherwise, it's as originally intended to 1989 specs:
Lots of space to read the drivers-side timing marks, and the two-bracket setup (not including the PS tensioner) is super simple:
This is the point that I realized that the dogbone is in the way of one of the water pump holes used by the Bouchillon Sanden brackets. Then it finally dawned on me that the dogbone is a spacer for the air pumps used on these engines. It isn't needed at all, not even for reinforcement (the casting is really light aluminum and wouldn't hold up to much stress at all), which is what I thought it was for in the first place. What's more, it's so soft that it could be easily filed (or even just reversed) to work with the BPE bracket, but why complicate things?
Soon as I have a new bolt...bye, bye dogbone.
That said, I'm going to order a PS pump rebuild kit, and remove the dogbone soon as I have the Bouchillon brackets on hand.
-Kurt