Looked a bit but figured I'd try to put one together. Will Put dB levels in as I get around to it.
Cargo Deck:
Material:
McMaster-Carr (1", .75 NRC stuff)
Remove your existing mat. Mine already had an open fiber mat under it. Not sure if all Zs had it or it's something new. Manufacturing date on mine is 7/11/11
Sound1.JPG
Trace it out on the foam backing and use a razor blade to cut it out.
Sound2.JPG
Sound3.JPG
Remove Backing and slide into place. Stretch it around so it fits perfect.
Sound4.JPG
Put back your original mat(s) and your done!
Sound5.JPG
Took me about 15 minutes.
Measured Improvement 2dB