IIRC.......it's WS'er "gigi".......i can't find the post either.
Pontiac Sunfire Trunk Pics--
http://s456.photobucket.com/albums/qq289/gigi2009_photos/?albumview=slideshow
With donut removed measurements are
25" across, 30" top to bottom, and 5" deep.
THIS IS NOT CASEY ANTHONY'S CAR. THIS IS MY CAR WHICH IS THE SAME MODEL.
Here you go.