You put that P.O.S. on my truck, you'll be removing it and I'll be moving on.
1.5" OD 15 ga is what I use for stuff like that.At least get a cheapo sq. die tubing roller and follow the roof line a lil.
Bends are stronger (when properly executed) than welds. It looks like someone had a bunch of square pieces laying around and decided to make a welding project.
Must be planning on a side roll. The lights face left and right. Not out the front. Toyota guys... They all seem confused in the trails... Maybe it's better they use square tube. God will sort them out...