am i right in thinking that on Saph 2wds the front discs are vented, front calipers are 4-pots, the rear calipers are single piston and the rear discs are solid/not vented

whereas

the 4x4s up front have single piston calipers and vented discs and single piston calipers and vented discs at the back?

Is this right? If not, what are the set-ups like and what size are the discs on each of them?