Wide, narrow, angled/slanted storage container to tuck in behind 2nd row?

[eatSleepWoof]

I'm considering changing up my cargo area and am interested in finding a hard-sided container which would (ideally) be as wide as the entire width behind the 2nd row seats, have a slanted back to tuck in as deep as possible, and not be much larger than 8-10" deep/tall. Has anyone happened to come across such a unicorn?

(Picture this Front Runner water tank tucking in against the 2nd row seat backs, but instead of holding water, it's a box in which I can store things.)

 

[Ratchey]

I'm considering changing up my cargo area and am interested in finding a hard-sided container which would (ideally) be as wide as the entire width behind the 2nd row seats, have a slanted back to tuck in as deep as possible, and not be much larger than 8-10" deep/tall. Has anyone happened to come across such a unicorn?

(Picture this Front Runner water tank tucking in against the 2nd row seat backs, but instead of holding water, it's a box in which I can store things.)

You are describing a speaker cabinet for trucks.
I would look to see what is offered for jeeps. I believe there used to be something like that for the older TJs although it might not go all of the way across (as Jeeps were a bit narrower back then) A trunk box of sorts

 

[rlynch356]

@eatSleepWoof
I make one that goes behind the 2nd row seats, not full width but it's possible I guess - I made the unit modular so you could do a 40% or 60% width.
It was originally envisioned for in front of the goose gear fridge slide box.

ASUB - Anderson Slanted Utility Box Pre-Order

Built to Order Currently Anderson Slanted Utility Box is designed to sit behind the second row seats in any Sport Utility Vehicle. This locking space can be used for anything that you need to store, mount, lock or hide away. The box is slanted to allow the rear seat to recline to a comfortable...

andersonoverlandoutfitters.com