You may be talking about the Votex kit for the 9n. There was no 9n bluemotion but there was a 9n3 one, so the bluemotion front lip/splitter will only fit a 9n3.
Bluemotion lip on a 9n3
Votex lip on a 9n
Looking at them together they're actually pretty similar

But they aren't interchangeable between models.
Hope this helps!