64 Valiant customized front valance

I'm going to keep the front of my car bumper-less and am looking for some ideas to customize the empty area in the front valance (see pic). Does anybody have any pics or ideas of their work? I don't want to completely fill it in as it would block air flow to the radiator. I'm considering chopping another grill up and putting it in there.

Pic isn't of my car but is a good shot I found of the area in question.

thanks for any ideas or suggestions.