94 Thunderbird front bumper

I have a 1994 Thunderbird LX and while servicing it the other day I noticed something appears to be missing from under the front bumper.
I can see marks where something used to be attached under the bumper. Was there an air dam or something there?
I seem to remember one there but I'm not sure.

Can anyone post a picture of the front of their car showing what is there?
A part number or description would also help.

I have been to the dealer looking at the bumper parts list and bought what they thought it could be but it wasn't the right part.

Thanks for any help.

Dave.

it's a rock guard. attaches to the front bumper and underneath where the engine sits.