Leaking PS gear box at top-need help

Can anyone help me drive a little deeper into this issue? I've attached two pics of my 68' Dart--the return valve area from the OP picture looks completely dry but I have PS fluid leaking out the drive shaft. (I think that's where it's coming from...see wet spot in other pic). Is this the same issue that could be solved simply by changing the seals or is this something different?
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