Removing back seats, in a vert? Options

[JFrost9]

So ive searched and ive searched, probably not very well, but i did it anyways.

My question is the guy who owned my vert before me put in this beefy box with a sub and the sub no longer works, i cant get to it except through the backseat and I cant figure out how to take the back seat out. Is it the same as the hatchback seat removal? Also I cant figure out how to take out the rear paneling in the vert where the speakers are placed. He disconnected them and i want to reconnect them. Im doing some audio work this week and appreciate any help.

Ill take some pics tomorrow of what i mean and keep trying...i just didnt wanna break anything and thought id ask first.

Josh.