I made this diagram for a box I want to build for 2 18"s to go in my S10... I made it like this because I am tall and I have my seat pushed all the way back and reclined back as well... This does not leave alot of room for a big box and I do not want to go into the bed... I want to fire the subs down (so the cones won't be hitting the back of the seat) and make the box as a wall that curves up and flows along the roof for more air space inside the box... Check it out and tell me what you think... For the pros, I could use some input... Also, I'm not sure if this design should be ported or sealed... What do you guys think???...