I believe they are somehow part of the front bumper, as I got them back in a bag when the shop removed my front bumper, but would like to be sure. I'm selling the front bumper and would like to give the person who buys it all the parts, even if I have no idea where or how they go on, heh.

 

I think they're the parts behind the grill.

 

Yup, they do go behind the bumper. Air diffusers i believe...

 

That's the part you make the foglight mounts out of