hmmm, what else
commodore calipers verada discs and 180b struts
so obviously you will need 180b struts, will need a smaller spring perch welded on
good struts as they allow lots of suspention travel in a lowered 1200

commodore calipers, from any of: VL turbo, VL v8,VN or VP v8, or any VR or VS. its the caliper bracket itself that actually changes, it allowes for a larger diameter disc to be used

mitsubishi magna/verada 276mm vented disc, centre needs to be bored out 4mm and new holes need to be drilled to bolt the disc onto the datsun hub (if buying new spend the extra money and get them undrilled so they dont end up with holes all over them)

big single piston brakes that should pull a 1200 up quite quickly(bigger than standard commodore brakes), require the use of 15 inch rims
caliper will bolt straight up to the strut, but dont know if the disc or caliper needs to be spaced out to get the disc centred in the caliper