Fun story with this car. I actually saw and photographed this car when it was in service. Photos are posted right here on Flickr. It was sold at auction fully equipped, and I bought it. I found a massive push bumper with the wrap-around, and installed that to give it a more aggressive look. Swapped the full wheel covers for center caps, and turned all the red lights amber - to keep it street legal. There's not many survivor Crown Vic's like this one. I'm lucky to have it.
I really don't know what this car was used for exactly, but it never had a spotlight and never had a roof mounted lightbar.
Photos of this car when it was in-service:
www.flickr.com/photos/formerwmdriver/5854657736/
and
www.flickr.com/photos/formerwmdriver/5854104435/
I wish I would have taken more photos of it, but I didn't know I was going to buy it years later...