Hi Jes A
The CCM side plate kit is small and will fit a show plate , I have a just legal six digit registration plate , I made my own bracket to include a reflector and plate light ! hold onto the original bracketry you may need it for mot time
That’s a little off topic,
I’m uploading a couple of pics , first bracket so I could include a reflector and light and a later sketch and bracket, these are in aluminium , the final two part type showen in the sketch will be all stainless.(all are sized to fit a 6 digit plate)
CCM side number plate bracket,
found in my box of bits and maybe the answer you were looking for, I’ve used the light for my own bracket it is a “shin yo 256-011” . a 6 digit plate is around, width 174mm X hight 165mm , that doesn’t include a makers name and post code !