Awning
We had a 6' ARB awning from our trial van (Toyota Sienna) and it bolted easily onto 1/4" twist nuts on the superstrut roof rails.
Side Step
An expensive after market option. I think these are $175 when you order the van and about $800 with shipping from Mopar.com.
- https://store.mopar.com/accessories/2021-ram-ram_promaster-exterior_accessories-cargo_steps/cargo_side_step_82214884.html
Window Coverings
Front windows: We ordered the front 3 window coverings from heatshield, they were inexpensive and really easy to put in and store when driving.
Side Window Coverings:
We ordered 2 side window shades from strawfoot.
- https://strawfoothandmade.com/products/window-covers-ram-promaster-van
Door Panels
Two rear panels and one side door panel, 1/4 inch with black screws & washers. I used #8 u nuts on the rear. These are clips that can move a little, making it easier to line up the holes on the panels.