pics of installing.
first i measured each side using the hatch as a centering marker.
then i used some silicone i had and put around the holes to mark the spot on the bumper to drill the holes.
after laying it on the bumper, i drilled the holes where the silicone marked, using a 1/4" drill bit.
removed the taillights, pushed the bolts through. then laid the spoiler over the bolts an tightened down.