The '72 Sprint Mustang, as posted above, was one of the models that did not have a metal camera case or plastic honeycomb panel. Like the '71 Boss and the early base sports roof, they have a painted taillight panel, the same panel the taillights mount in.
You can't expect much in the way of accuracy on the die-cast produced by Auto World. At one time, they made some nice entry-level die casts. You can see from the terrible fit and finish of the deck lid, bumpers, and other components their quality control hasn't improved much.
The angled-down appearance of the grill and headlights, the strange sag of the taillights, and the blue-painted honeycomb panel add little to the accuracy of this one.