Holy smokes, are those the factory holes?

Yes. Four holes are used for two bolts and two nuts. The other holes are for the plastic clips that are snapped into the spoiler itself. All held together with double sided foam tape. Just take your time if you consider removing the factory spoiler.

You did a great job in cleaning the foam tape from the factory spoiler. What did you do or use to clean them up? I tried goo-gone but it did not work.