Yes, yes, yes.....all that stuff would 'work', but, as Justin said;
"Wouldn't have that nice looking bend radius to it though."
And as Stan Ostergard, the machinist who showed me how to use a Bridgeport Turret Lathe always told me: "Make it look like somebody cared."
I could have used angle iron or aluminum, but aluminum wouldn't have given me the anti-vibration support and the bracket would have looked utilitarian on a way-classy car.
I could have only used two bolts in a horizontal line to mount to the body, but the lights would have jiggled at road speeds.
I could have used a straignt-sided, square piece of bent metal instead of multiple compound curves, but it wouldn't have looked anywhere near as nice because the rest of the car is all multiple compounfd curves - kinda like my wife!
They're just one more thing that gets that "Wow..." When someone looks at the car. Every time you look at it, there is something else that catches your eye. Kinda like when they realize that the shape of the third brake light housing is copied in the shape of the roll bar - stuff like that.
"Krazy": I'm not particularly interested in another bespoke set of driving light mounts so, sorry, no. Find a local fab or muffler shop, take my pictures over and ask if they can make a pair. I made those with a HD bench vice, a pair of channelock piers, a BIG friggin hammer, a MAPP Gas torch, a sabre saw and the piece of metal. Finished fair price (in stainless steel) should be somwhere between $60 and $100 bucks for the two (because stainless steel is a bitch to work like this - it is too hard and brittle).
Ask around, and I'm sure you'll find someone local to do them for you.