Subwoofer box design for 9th gen si

[brooks129x]

I'm trying to upgrade my box because I'm using the sk2X12v with vxfs and I feel like the box is a little small. The one small issue is that my system is in a 2014 civic si. The trunk is barely big enough to fit this box so I'd definitely have to build the box into the trunk. But if anyone can come up with some dimensions for a front facing sub and port that would be amazing😁

[Joe X]

Pics of your situation? System specs?