After a long time with these brackets off, it's time to replace them. There were three (I think) spacers of different lengths between the bracket and the radius arm. The bolts go through the backplate, then the radius arm, then the spacers go on, and then the bracket which both secures the bottom of the coilover and anchors the brake cable.
I've lost all the spacers.
Does anyone know what the three different lengths are?