I have a Speedmetal set-up. The License plate IS the bracket support. The turn signals hook to the bottom of the rear with half (1/3?) tubes that hold the wires. The tag then connects the turn signals and gives it the strength. No frills, nothing extra. Law says you got to have turn signals, a stop light and a tag. So that is all that's there. I don't think it can get any more lite weight then that.
What cracked me up was the guys fooling with the tag. Reminded me of monkeys discovering a football.:lgh2