What is the name of the verticle panel that the door latch attaches to?
Mine has a rust hole clear through it at the bottom, and at somepoint in the past was bent, and straightened (with a lot of bondo).
I would like to replace it, but can't figure out what to call it.
It's the panel on the right side of the picture, that the quarter panel is supposed to be attached to.
And where do I get one?

 

I believe it's called the door jamb.

 

That is indeed the door jamb.

 

^ +1 and here are the extra characters so I can post.