Yesterday I was doing some work on the car and I decided to hunt for the build sheet. After searching a few Camaro sites, I was reasonably certain the sheet was stuffed behind the rear seat.
After taking out the bottom two cushions and removing the two bolts for the top cushion, I lifted the top cushion and reached in behind. I was so happy to feel a piece of paper stuffed half way up on the passenger side.
Here's a copy of what I found.