Has anyone found a box that fits well under the rear seat in an Extended Cab on the passenger side? This would be the stand-alone seat that folds up by itself.

My goal here is to install a shallow 10", but only lose minimal space under the rear seat/s. I'm hoping I can keep the sub under the stand-alone seat and mount the amp behind the backrest of the seat.

Not much room in these Extendo cabs..

 

This what I did in my 14... they have a single version thats supposed to be awesome
https://www.f150forum.com/f30/jl-microsub-scab-274370/

 

Hmm.. Good idea.

I guess i'm really trying to avoid using any space under the seat in the middle or on the driver side though. The only space I really am OK with losing is under the rear seat on the passenger side and behind the back rest.

The question now is, what's the best box to use for this with a 10" sub.. I think..