Broken part repair question

[McCoyAZ]

I bougt a 4 headlight grill from a guy on here quite awhile back and never really looked at it until this morning when I was going to install it.

I find that the headlight support posts are all broken off on both of the cans.

Can these be replaced or do I have to scroung up some new cans to get a fix?

The arrow in the pic is what is supposed to be there and the circles show the ones missing.

Oh and if you can tell what year chevrolet this came out of by looking could you tell me please?

As always,

Thanks in advance. You guys are amazing at your willingness to help.