Alex Del Rey

hello fellas, fairly new to forums. i have a 1978 280z. I need help finding out what a part is called, I've looked all over the internet,service manuals, factory manuals... and NOTHING! so description is it is the Rear body assembly between the taillights and the rear twilight cover. ill upload a pic of what I'm talking about and of my car.. any help would be great! thanks! Now the person actually holding it is for a 240z b ut i think they should be the same...