Power steering hoses

[Elchopperfreak]

Hi
My dad owns a 1990 chevy c1500 454 SS
The power steering radiator is toast, what would be the best bet, saw an OEM one but it does not show the lines going into the pump, nor steering box.
Was planning on adding an aftermarket cooler, my question is, seems to be a pressure line in the small radiator ( cooler) coming from the steering box, how major is the pressure and can it be changed with a heavy duty rubber hose with good clamps???

Second part is the pressure hose that goes into the box from the pump, my dad ordered one, but its nothing like the one in the truck right now. After checking various sites none of them looks like the one on the truck.

Any clues?

Thanks in advance for the help
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[Elchopperfreak]

Heres were they meet the steering box



And the cooler..


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