Possible COPO Chevelle?

[CopoFan]

Thanks to everyone so far for the quick responses!

We've checked the most of the obvious places for the build sheet (back seat, door panels, under carpet) and have had no luck. We have a feeling the build sheet was found and removed during the paint work back in the 70's.

There is no sign that the rear end isn't original, especially since the paint on it matches the rest of the underneath which was all done many years ago. What internals of the rear end would point to COPO?

I attached a shot of the rear, which reminds me that everything was taken off of the tail panel for some reason.

Now that I think about it, there may be an SS emblem in the interior, but I'll defer that and the SS holes on the back panel to the current owner, Anthony, who will hopefully be catching up on this thread tomorrow.

Thanks again...
Bob