Chris, don't go to a lot of trouble, because if it would work, it would be mid summer or later before I could even think about this, but what kind of max specs are available for a Ford 351ci with serp belt, Power steering pump?
That one company uses the power steering pump to drive their winches, and I once looked into doing the same for my winch.
But, the stock pump has nowhere near the volume or pressure I would need.
There is a kit made that would give me an engine driven pump, but it is very involved and requires an additional belt.
If I could just replace my present pump with a big honking pump it would be much simpler.
Of course, that puts more load on the belt which might not handle it, and there might not be room for a bigger pump.
Nobody deals with the Ford pumps, because well, they aren't great. You would want to swap to a "p" pump. The PSC pumps flow nearly 50% more than stock, something like ~4.5 gpm. That's probably double what the stock Ford pump does. Lots of Ford guys switch to the p pump.
If you're running a winch, you may want to consider a dedicated pump. I know Stephen used to run a hydraulic winch that was very strong and fast because it had it's own pump.


