Bill has an eye for details.
Post up the engine code. That tells a lot.
Originally that was a 729 white houndstooth interior. Changed to black houndstooth.
As I told you via email, I don't see the originality - it's been mucked with. But the bones look good. Prove that it's original drivetrain and that strengthens the value.
http://www.camaros.org/drivetrain.shtml