Leaking power steering box - NEED Help

I have a 1967 Dart w/273.
Im having a simular problem with my power steering box leaking at the worm shaft. Where the column connects to box. Pretty bad leak, I am hoping that there is just one seal there to make it a semi easy fix? I know better than to ever say the word EASY. Lol But one would think and hope anyways. Am i wrong on this? I really dont want to remove the entire box if i dont have to,Tho i have an other box if needed.
Might have to try the jack oil with leak stop. sounds pretty reasonable.