My agent for State Farm stated that If it came with the original vehicle, it's covered. They even called into SF Corporate office to explain the value of the AEV up-fit, and they have a copy of the original AEV window sticker on file to show what they are insuring. There was no additional premium charged to me for this added value. My agent also has in my file the rep that confirmed this from corporate headquarters.
We purchase our AEV used, and I was very adamant about this being properly insured. I was willing to pay more money for proper coverage. As for additional items, like the aftermarket headlights, tail lights, and so forth, I'm not sure if they will add even more additional value if the vehicle was totaled.