For headlight brackets (I've done this 3 X) I ebay a matching (to the forks, that way you know they'll fit) top triple clamp and cut the center section out and that leaves the two pinch clamps. Then I make the two arms (aluminum) to hold the headlight bucket and TIG weld them. You can make them as plain or fancy as you want.
Cheers, 50gary
Cheers, 50gary