I think it might matter, what year is it?
I recently did this on my 04'. You will need to remove the rear deck lower cover (the one in the trunk) to disconnect them from the amp.
Then fold down your rear seats. Before you try gorilla ripping it outta there like this guy you will need to fold down the small sides of the seats as well. If you look towards the top of these small seat ends you see a little cut out. In there is a latch. I used a small screwdriver to weasel in there to press them in the direction they will go. They should move easily, someone broke one of mine but it was still moveable.
Once that is done, remove the big ol' push clips and seat belt cover off the rear deck cover. With a little effort and finesse, pull the rear deck cover straight forward. You may have to press up on the center for clearance. Once this is out it should be self explanatory. I believe the bolts for mine were 6mm or 7mm. Don't be scared if one of those buggers is missing a grille too. For some reason one of mine had one, the other did not.