Thickness of 4Runner roof?

[4RExplorer]

Once I take the headliner off from inside the truck, what's left of the roof? Is it a single layer of sheet metal, or is there more to it? How thick is the roof (not counting the headliner)? I found this picture showing Part #63111.

 

[Dynamo]

I am almost certain it is just a single layer of sheet metal besides the support ribs and headliner. When I had my FJ Cruiser I had to drill a hole in the roof for the roof air dam lights and that's all it was. I doubt the 4Runner is any different.

 

[the_fornicator]

I am almost certain it is just a single layer of sheet metal besides the support ribs and headliner. When I had my FJ Cruiser I had to drill a hole in the roof for the roof air dam lights and that's all it was. I doubt the 4Runner is any different.

That's how my 2nd and 4th gen were. Nothing fancy or special to it other than the roof rack mounting points.

 

[4RExplorer]

Thanks. I am also considering drilling/cutting into the roof and it helps to know what to expect.