I went through 3 different boxes before i finally just accepted that I would have to raise my rear seat up to get the bass output i truly wanted out of my truck. I got the box and the construction is super nice and fits in my truck amazing, started with two skar audio 10's and they did really well but didn't get as low as i would like. Just upgraded to two alpine type R 12's and they get down in this box. So if you're on the fence just get off the fence and buy this box and go make your neighbor hate you for the bass coming out of your truck.