I will be getting a Atlas 15" for my Ford Ranger. I want to go ported but this is my first box. Would the below box be a good box for my sub? There is a hump in the extended cab so that is why there is a section cut out. Also could you help me with the port? I don't know what I want to tune it to. I listen to mainly rap so I want some good spl. A link for the box is below.