From the bottom edge of the boot to the bottom edge of the Cosworth badge is 20mm and the bottom edge of the Sierra and RS badge is 48mm. The Sierra and Cosworth are 67mm from the bottom left corner of the boot and the RS is 243mm from this bottom left point. The Ford oval is 35mm up from bottom edge and 82mm from bottom right corner.
This is what I meant by the painted 4x4. Unfortunately it was night time so had to take it with the headlights of another car as flash just made a bright reflection. David