was trying to see how most are installing these, with no response from the vendor I purchase from I decided to install similarly to my Bmw 1M.
The screws that came in the package were awfully short thinking that they were not going to grab into much I decided against using screws. I do wish they had original screw locations on this war lip. 3M VHB was used.. I use quite a bit prep the bumper applied with heat and let it sit in the sun and sit overnight with pressure against it. Seems to be holding thus far.