Power steering return hose (low pressure power steering hose) is its own thing. Different material for different chemical resistance. I guess it's the same as transmission cooler hose but it's a larger diameter IIRC.
If you're able to use bulk un-bent hose without kinks, buy "power steering return hose" specifically and you should be good.
I don't know if the part is still available but I would presume that an R33 GTS25t OEM prebent return hose should fit with an RB25 and S14 reservoir like you have.
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