I just came across this, might be something you might want to look into:
https://midfifty.com/item.php?INV_ID...ssist-steering
Mid-Fifty F-100 parts
Ram Assist Steering
Fits: 1953-56 Ford F-100 Trucks (Each truck takes 1)
Part Number: 4630 Original Part Number: 5356PSK
Price: $ 969.50 KIT
Quantity
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All new valves are now made and the kit is better than ever. Original truck did not come with power steering but a power set up was available on the big trucks. This kit is very similar to the big truck set up as well as the power assist used on other cars and trucks of the late 50's and 60's. Good kit for the "almost" stock truck. Made with all new pieces and guaranteed. This system is great for the purist. It bolts to the existing steering system and clears all of the factory components. This will allow the use of the factory steering columns and allow for a stock look without having to suffer with manual steering. Kit includes power cylinder, drag link, heavy duty tie rod, new style tie rod ends, control valve assembly, hoses and all necessary mounting hardware, every thing but pump.