Great find but it raises more questions than it answers.
Those CPA docs specify H (hydraulic?) VAC (vacuum assisted?) DIV (ventilated disc?) and front/rear disc diameter for all the variants, where disc diameter and thickness being the only difference between the models. Wheel size and track, offset, etc is also mentioned but nothing concrete is mentioned about caliper type, BMC, etc.
Summary:
44667-1181665 for MSE & Director: 355-32 front & 360-28 rear discs, 20” wheels only (asymmetric).
44667-1197568 for SS-V Reserve Edition, SS-V Redline & Calais v: 321-30 front & 324-22 rear discs, 19” & 20” wheel options. Comment that service bake option B is standard on SS-V RE & RL & option C is optional on Calais-V V8.
44667-1197567 for SS and SS-Police, 321-30 front & 324-22 rear discs, 18” 19” & 20” wheel options. Comment that service bake option B is standard on SS-Police and optional for SS.
44667-1150625 for Clubsport R8 Tourer, 367-32 front & 372-32 rear discs, 20” wheels (asymmetric).
So what is service brake option B & C and do they mean the same across the models?It seems like this is the information that needs to be sourced (maybe directly from DOTARS).