Retrofit (optional) Fold Out Bunk

[gb802]

Hello forum.  Has anyone retrofitted the "optional fold out bunk" where the storage cabinets are in any of the DB models?  Thanks!

[gb802]

To clarify, the bunk shown in the video below (at 3:00) is what I'm looking to retrofit in place of cabinets that are already installed.

https://youtu.be/k__QwKFJD9g?t=180

Thanks!