[Unusual question for sub box]

I thought I put it in there. It’s a 2004 excursion

[Unusual question for sub box]

300 amp HO alternator 
4 runs of 1/0 ofc
2 100ah agm
48am lithium 
I have 6 6.5 midbass
I have 6 6.5 mid range 
I have 6 1 inch silk dome tweeters.
I have 4 Audiopipe bdc2 -12 running off of two JP23 strapped .
The box is net volume of 10 cubic feet with 120 square inches of port. The subs are firing up port back .
Sound deading has only been done to the roof and yes it rattled like a Mofo
Also the rear side windows move out an inch while playing so much when I was. Driving in the rain it would come in . 
The rear doors and hatch just go crazy
This is what I was thinking about doing at the c pillar. I have never built a 4th or a 6th and there is no good info on how to do it right . I have talk to some people but they want 160.00 for the design . So I thought maybe this would work or just do a ported wall and go with 6 twelves.
So it’s basically just turning the box around and ding sides and top and back to try and seal it off at the c pillar . Would this just be a waste of time .mom. It sure I have never done one like this before . But building a c pillar wall would be easy.

[Unusual question for sub box]

Ok right now I have 4 12 subs in a ported box . Sun firing up port to rear . The problem I have is my sub has huge windows on the back side and my 3 door rear hatch. When I am playing I feel like I am losing a lot out of those windows . What would happen if I turned the box around and put side top and back on the box so everything was having to go forward . Would it sound like crap . I thought about building a wall but I like to see out of my side and rear glass .