Screws in roof

I have 8 screws in my roof from something the past owner has of there. It's 4 in the middle and 2 on the right and 2 on the left. There all close to the windshield. I was wondering did any of y'all have a idea of what it could have went too? I was thinking a light bar of some sorts or something like that. Thanks

 

could have been one of those goofy visor thingys.any leaks?

 

maybe from those roof mounted lights truckers usually have on their rigs?

 

No leaks thank god. And the front screw to the back one is about 6 inchs apart if that makes any since. That's y I was thinking is was a light bar

 

http://www.eautoworks.com/product-Valley-Industries-313852.htm

I'm thinking one of these.

 

It looks like it would fit where the screws are.

 

But I would rather have screws up there than that visor