The power steering boxes are extremely long lived. I would check carefully to be sure it is leaking from the box. It is a lot more likely to be a hose or a loose fitting.

And if it is at the box there is no reason not to replace the seal.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.