Outer Limits 4x4 Board

Hey Truckers,
here's an easy one. I just put a power steer box in my 40, but the 2 line holes are looking exactly the same. Which one is the pressure line hole, and which is the return line hole. One is forward, one is rear.
Thanks,

The 400 small block chev and 5 speed are nearly in and finished! Woohoo!!!

they are definitely different if it is a toyota, get your low pressure one and screw it in, it should only fit in one hole.