Uses two interconnecting aluminium angles. Cut out most of the top flange on each.
Two holes into voids behind front of top triple, with 6mm socket heads and nuts behind. Two more bolts through front angle into oem rubber grommets on headlight shell. Then there are two bolts through the top tabs to connect the two angles in the middle, making it possible to detach. First photo in top post was too wide at the top for cables and such. This one is what it looks like now. I cut the top flanges down to 50mm wide in center and moved them very close together to keep shell tight to the clamps. Made the turn signal stalks, welded to a flat bar and bolted it to the front flange all the way across the bottom. Nothing touches, but it's close.
Bottom of shell uses a single bolt inside a spacer to a little tab and a threaded bolt hole into center of lower clamp. Pretty simple stuff.
You're all getting ahead of me. I'll post a short build thread sometime soon