I do not know its name so here is a picture. I drew an arrow pointing to the thing, it's the piece of metal under the grill that both the grill and headlight bezels mount to. Mine got smashed, and it was rusty anyway. Where are the bolts, and is the seam hidden?

 

that trim should just pop out. It's held on by clips. Be careful when popping the clips out. I did mine on my old 240 that I just sold. Took me but 5 minutes to pop with a flat heead screw driver....

 

Not the trim, the metal lip under the grill that both the grill and headlight bezels mount to. Mine got smashed (by the aftermarket bumper guards when the bumper compressed) how do I remove it?

 

I wanna say you have to remove the bumper to remove.. Take your grill out and feel under there.