im going to mount this on my Hf. the spoiler doesn't have LED. it has three screws one on each side and one in the middle, i know what to do with those . but it also has two plastic things, one on each side right beside the screw. they stick out of the wing about an inch and are just a little wider than the screw. what are these used for? i need to know if i need to drill 3 holes or 5 holes.

 

please help

 

Sound like a plastic lock. Lock/hold the wing down?

 

you can take the plastic pieces of and just nut and bolt it.There is a stud under the plastic clip. The clips are used when installed from factory or dealer. It is not important to use them.