Check the motor mounts, and take back seat out and see if there is crayon written on the cross brace. May say X3, X33, or the color of the interior. Mine says (DG3). I would say that means Dark Green interior.... X33 (1969 Z/28). Motor mounts on frame should be L=3945507 R=3945508 if it is a Z/28 or SS car. Hope this helps. Sam
