i know that if i had a bigger box, which could happen if i had a cut out, and i would love to have an extended cab, but since i dont have those i just have what u see. i dont think the air space is correct for it. it could be louder w/ a larger box. the subs are thunder4000's. just 400 max w/ each speaker. the amp is on the other side, the box doesnt go all they way across. talk to me on sonoma2002 if ya want.