What is this interior trim piece called?

[Chandler]

What is this part called and where can I find another one?

 

[Chris]

That's the kick panel, and you can't find one brand new, as Mopar discontinued it a long time ago.

The best place to find a used one is on eBay or http://car-part.com.

 

[Kiwi TJ]

Yes @Chris is correct...Kick panel