The sticker will be in the same place as non-C60 cars. The engine was assembled at Tonawanda and the sticker applied there. The A/C compressor was installed on the Norwood (or LA) engine dress line so there was no reason to move it to a different location. As for the "exact same place" each time? Probably not. A quarter inch here, a quarter inch there... If I remember correctly, John said the sticker was applied to the valve cover before the valve covers were installed on the engine, and even though they had a template to place the sticker on the valve cover in the same place, they probably just eyeballed it most of the time.
Ed