Locost project - headlamp brackets.

Does anyone have any pictures/information on how headlamps brackets and the spare wheel/rear number plate brackets were fitted to SE/SEiW Westfields or Caterham Sevens please? I am guessing some sort of tube clamp perhaps a saddle clamp using threaded inserts into the chassis tube for saddle retaining bolts or perhaps welded round clamps - split tube with protruding tab and a retaining bolt to clamp? - direct to the square steel chassis tubes? Headlamp brackets (chrome) like these for clamshell wings or for cycle wings (in black part numbers stamped on 29512 and 29513). I understand the lower mounts for the headlamp brackets bolt on to an upper suspension bolt using a spacer and an extra length bolt.