The 9 is a different puppy, and they don't repro the emblem, so you have to make the 7/8 fit. I have an early repro emblem that I bought in '87. It fits better than other emblems I have seen on other 9's, but it took some reshaping of the backside to get a reasonable fit.
All 9's have punched bumpers, but all 9's don't have chrome rings in the grills. Way back long before the the internet was invented, I recall reading that they ran out of chrome rings during production, the reason none were available as replacment parts.
That or they simply forgot to install them. I know that people cannot stand to think that such a thing happened to such a finely crafterd automobile, but leaving things off, and installing things upside down was te way they did it back then.