That should work. I have a single 10" memohis in a ported box and it takes up more then half my trunk lol
I thought I seen a aftermarket set up on kia forums, I believe I seen it in 14+ sorento sub forums but could be in others.... not sure if that's what you are after?I will upgrade when there is a after market system that will work with the rear view, steering wheel, sat radio, and nav all in one. For now I'll just stick with installing the Sun Down subs, mids and separates powered with a critical mass 5 channel amp