Rambox capacity

[Canada Mike]

Considering some options for a 5.7 box
There has been no trucks at any dealer lots with the rambox to see. I did find a 2016 with them and honestly thought they were smallish and wo wondering if the new gen are larger.
Anyone with some feedback on this would be appreciated.
Thanks

 

[2019REBEL]

I don't have my new 2019 yet but they are definitely larger because the bed is 1 1/2 inches taller.