I corrected some of my first post, and I added a link.

You would not be able to use pickup floor boards in a Panel/Suburban.

You should be able to swap the panel and Suburban floor plywood.

OTHER CONSIDERATIONS:

How do plan to remove those floors?

It is not an easy undertaking removing/installing floor boards/plywood as one piece.
- the floorboard/plywood cannot be removed without removing the metal "edge" along one side.
- remove all bolts along bolt sides of floorboards
- remove one of the metal edges - I think there are close to 30 spot welds that would need to be drilled out.
- the floorboard would be then be angled up on one side, and then removed from below
(it is too large/wide to angled out the rear door opening (I think).

If anyone has successfully done a "swap", please post your technique/experience/advice.