This may be better served in Audio but here goes.

The 5th gen requires the removal of the center trim around the stereo.

To do this loosen the 2 or 3 screws inside the console/armrest then remove the screws at the shifter area and behind the ashtray there is one to remove.

Then delicatley pull on the trim piece and it should begin to pop out and you can remove the stereo at that point.

Take your time and make sure you check for any missed screws by pulling slowly and checking for hang ups in the removal of any parts.

Hope it helps some.