There are probably different dividers you can choose from but they all serve the same general purpose. You don’t really need the divider to go from the bottom of the bed to the top, unless you cargo was so loose that it would be spilling over. Even if that were the case I would probably opt for a large cargo net to anchor over the top of the cargo (if you’re not using a tonneau cover) or ratcheting tie downs. The ratcheting bar is very secure and you tension it between the bed. Easily movable so you can divide and size your bed to suit your needs. You can even get two of them if you want to divide into thirds. Your luggage won’t be going anywhere. Another very helpful addition is a rubber bed mat that makes the bed easier to kneel in, protects it AND will prevent most anything from sliding around. I will post a link to the one I use below. It is longer than needed for my 5.7 short bed so I just cut it to fit (I use the extra piece as a work mat). Mopar makes one as well but it’s more money. I highly recommend getting one of these to complement your bar(s). It really smells like rubber for a bit though.
Dee Zee DZ85005 Universal...
https://www.amazon.com/dp/B000VU8YO8?ref=ppx_pop_mob_ap_share
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