Note the holes (far right) that run smack into sheet metal (faded black with light surface rust) and the column to the left of that are about 75% blocked by sheet metal on the back side and 25% condenser loops.
Same blocking here in far left column and the bottom two are completely blocked from the factory, albeit on the backside.
Shows the big open slots between bumber and grill and the hood latch completely blocking the hole above and to the right of the blue oval.
My cardboard template fitted into a hole.
Far right column is now blocked by trashcan cutouts.
Shows that the blocking is nearly flush, but not quite.