Sooo, I recently purchased a 3500Promaster with the factory divider between the cab and rear. I mentioned several times to the dealer, who seemed like a very nice guy, that I would be removing it and re-installing it as I experimented with different interior arrangements and he said that would be fine. However, being the cautious guy that I am, I thought I would ask here, Is this piece in anyway structural?? I don't want the sides to collapse when I hit 70 mph or have it fold in half on speed bump. I am enjoying it so far and this site is giving lots of great ideas. Keep up the good work.