I don't know about the Challenger but on Mustangs they have very tiny holes for license plates that can be drilled out for plate screws but many don't and just use very tiny stainless steel screws with rear nuts to mount the plates.
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For I know the plans I have for you," declares the LORD, "plans to prosper you and not to harm you, plans to give you hope and a future. Then you will call upon me and come and pray to me, and I will listen to you. You will seek me and find me when you seek me with all your heart.