Not sure I understand. The Clarity does have a passthrough. Fold down either of the rear seats and there is an opening. If you mean with the seats up that's a different story.
It looks like the center piece above the armrest is part of the right seat. See part #5.
And part #4 is the panel behind that. Doesn't look like either is structural.
I think that if you did it right the arm rest would hide the opening when closed.
I have a sawzall. Where do you live? lol
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