Ok, so the dealer I got the truck from stated "The previous owner took the sub and amps, but the wires are still there."

This was not true, but it is a bonus for me. The old owner left the amp, wires, and something else. I have photos of them in place but i am unsure of how to access them to see what needs to happen to place a 8" sub under the back seat (not looking for a thump truck, just sum base for my country music stock speaks sound like crap). anyway I hope someone can help me out.

 

It's hard to tell what exactly is going on there ... so I'd say have a shop look at it that does stereos.