There are variations with Girling calipers: 2 styles on fronts and 2 styles on rears. Don't know if it was based on order or part availability. I am trying to recall some 2, 3, 4 piston calipers, some calipers in cast others in aluminium, and front rotors 292x14 and rears 268x12,5 or 280x12,5
here is a composite from 3 build sheets
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