Thanks. lol Im thinking of building a box for SPL. By the way the side carpet has a hole because that is the port to the box, just picture is deceiving to the eye which make it seem like carpet is incomplete.
Well I ended up closing the port. I wasnt getting good bass :( not enough space inside box. When I closed the port though I noticed a very significant difference. Maybe I might build a down fire box in the future and make a big seat in the back :)