Box Help..

[TrevorM]

I have a question about a box design. Earlier this year I built a 2 15's box for my reg cab chevy the fit behind the seats and where the center console was. (You can see it in my pics) I'm building a new one, a little bigger with more power, I was wondering if I should do the port out the front again or in between the seats facing up? Or any other place you can think of? That box was tuned @30htz. And also, what frequency do you recommend? The old box was 7cubes tuned at 30htz. It hit a 145.0 on the db meter on half power(1100 watts) with factory battery and alt. Now pushing them with 2200 watts @1ohm, 2 extra deep cell batteries, and a bigger alt. Here is a pic of the box.

Lmk if anyone has any ideas or anything I should do differently this time around. Thanks, Trevor.