Here are some pictures of the trunk lid getting a 7.5# weight reduction. I had to add hood pins (or would they be trunk pins ) because there are no hinges or catches to keep it on any longer.

Stock (on car):

Stock (off car):

After cutting:

Metal that came off (does not include the hardware that is no longer there):

I purchased these hoodpins at Advanced Auto Parts (look in their rice section):

What the pins look like on the lid:

A close up of the pin: