10" subwoofer box modification

Figure I'Lloyd start here with this question. First some background. I want to add an aftermarket to my 05 TL. (I know how and all the details.)

I currently have a 10" sealed enclosure with 2 kicker comp series subs. The enclosure is a basic store bought sealed enclosure. My question is can I cut it right down the middle and make two separate 10" enclosures? Obviously i would close it back up. What kind of material are they put together with? I want to add a sub on a low budget so I want to use the materials that I already have.

Thanks