Two of the three were blown off along with the plate in an automated car wash today. I can't seem to find these anywhere. It has a rectangle at the end that is a lock-and-twist.

Thank you

 

Try going to a local Chrysler dealer. Take your parts to the guy at the parts counter, tell him your make, model and year, and what they do, and he'll be able to look them up on his computer. If the fasteners are standard parts, he'll sell them. They may be part of an assembly and you may need to buy the assembly. You do not need to know the part number.