So I'm part way through a hand full I things, but I need to k ow whats under my back seat? Never taken it off or even got around to looking under the car, so is there by chance open space under the back seat?

 

You meaning between the seat bottom and the floorboard? I haven't had ours apart, but I am thinking that there isn't a whole lot of room since if you have the high end Musicgate system, the amp is behind the seat near the spare tire.

 

There's no room there. That's where fuel pump access is. If you get wise and put screws into the body under there, you will find yourself with a gas tank leak.