Note in the picture above, it's sort of a mish-mash of drawings that the illustrator people must've got the "intern" to fix real quick before going to press and it just became a fugging mess.
Check it- the header panel is for the "new Euro nose for 1986" that actually got pushed back to 1987. Thus, they had to do a lot of fixing on parts in the front end. They decided to continue the current grille set up from 1985 into the 86 model year. Then, since they didn't have a different grille for the 86 (as they tended to change the design every year), they went back and recycled the 1981 grille. The 86 Salons got a new treatment of BLACK grille centers that 81 never got, which, IMO, was one of the best looking grille sets in the 80s.
So what you see in the picture above, they forgot to change the header back to the OG 81 style, and the nose emblem shouldn't have been there either. And look at the screw for part #19. Someone forgot to tell that intern that it shouldn't be there. Again, another mishap from the Euro nose. Euro grille pieces have screws that come in from the front since they were stationary. But the 81-86 spring hinge grilles have the screws in the back.
Another trivia note about the 86 Cutlass line was that at least the G47 models were supposed to get Monte SS style wedge side mirrors. Didn't happen either, but the 86 brochure still shows them on the cars as they forgot to air brush that out like they did the front ends. The parts book even shows the side mirror glass on the driver side, IIRC, as a Monte SS mirror glass. "The object called the mirror is different than it appears."