My buddy has a regular cab 2003 f-150. After a lot of time looking at equipment, he wants to go with an elemental designs package. Thinking of 4 11kv2's sealed in a 2 cubic foot enclosure, powered by a nine.1. It will be a tight squeeze to get all 4 tens next to each other, but I think we can do it. Its nice since the kv's have a small mounting depth. I should mention goals as well. He wants a nice sounding system that can bang out the occasional rap tune as well. Let me know what you think of the equipment selection.