My 70 Super Bee had 1 little black block about 1 inch x 1 inch with a recessed hole in it screwed to the bottom of the brace where the side of the gas tank would be. The other side is gone but the hole is still there for it. Does anyone know if these are reproduced? are they even original? Looks like the aftermarket braces have a peice spotwelded on them that keeps the tank centered. Any info much appreciated.