2011 Roadtrek Simplicity 210 on Chevy 3500

[tarp]

I removed the wardrobe behind the driver's seat. No big deal.

Next, there is no hint about what is possible there. I asked and was sent photos with a "base" that says it was part of the wardrobe a seat sits on.

Nope, the wardrobe was one big piece. When it's gone it's gone. Just some fiberglass and a couple of bolts but they don't look like a seat can be installed.

Any hints?
Next I'll be tackling the adjacent wall (lateral or vertical supports?) Then replacing with lithium but not solar.

Thanks!