1984 300D

I might be swapping out my steering box with one that has the Pitman arm already attached. I am trying to get the steps for the swap figured out thoroughly before I begin.

Once I separate the drag link and track rod from the Pitman arm, do I need to remove the Pitman arm from the steering box before I can remove it from the car? Or will the other suspension parts be in the way and prevent me from removing it with the arm attached?

I would be much easier if I did not have to remove the pitman arm since the other box already has it attached.

I searched a number of posts, but do not see the answer.

Also, I can remove the tie rods if that helps me move the suspension parts out of the way so I can remove the box with the Pitman still attached.

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1984 300D 398K-daily driver
1998 Honda Accord 102K -wife's daily driver
1991 Volvo 740 289K
2000 Toyota Corolla 143K