Slant Six Saginaw Keyed and Nutted Pulley

That's funny, because I'm running that pulley on my slant six. There was a tiny misalignment, but it wasn't the pulley -- the used brackets I got seemed to be slightly tweaked. I had to put a washer under two of the mounting bolts (into the block) to even it out. I also have a Borgeson box, but the Saginaw pump was new from Classic Industries, IIRC.

You can adjust the output pressure of the Saginaw pumps by playing with the washer packs. I have an article by Ehrenberg describing this. Link: Dropbox - Power steering mods_PUMP_IT_DOWN-re-v1.4.pdf

I called 440 Source and they said the Saginaw pulley they have that is keyed won't work with a slant six. They said belt alignment will be off. I'm trying to find something to use on the pump that Peter Bergman sells for use with the Borgeson gearbox. The pump is rated for 1200-1350 PSI with a 2.7-3.5 GPM Flow Rate. Is there a pump with pressure settings close to that for a V8 that would fit the slant with the slant's brackets?