This picture is from a Baltimore built 11A 68 chevelle with 5K miles and untouched. I will look for more pics, but what I've seen are primarily bare metal and perhaps a few that appear black. From what I recall the engines were not fired with gasoline at either Tonawanda or Flint, and in fact the plate and fuel pump were not installed, which is why the plate is not orange. The plate and pump were installed on the Chevrolet side of the Norwood plant in the engine dress area.