1988 K5, I'm having trouble locating the grill lower support bar that connects from quarter panel to quarter panel. Any suggestions and what is the correct name for the part?

 

I'm not sure what part you're talking about, but I probably have it. Where are you located?

 

Are you talking about the radiator support by chance?

 

No, I have the replacement panel for that. The piece I'm referring to runs directly underneath the grill. 2 bolts hold it onto each front quarter panel. It spans the width of the body and goes under both headlight bezels.

 

You mean the sheet metal piece? The one with the sun reflecting off of it in this picture?