I made one of these for my GC, and thought I'd see if anyone else would be interested in one? I can make them to fit either a 10" or 12" sub and as you can see in the photos, the dyed carpet is a VERY close match to stock. It takes me about a week to put one together, so if your interested, it'll require a small amount of patience to receive.
This sits right over your battery and friction fits into place. I'll test fit it in my own car before shipping to ensure a precise fitment.
Thanks!
Mike