south africa built R30 skylines.Like australia had 910.these had live axles.I also think that all short wheel base body[4 cyl SOHC had live rear].well I havnt noticed any difference removing air intakes.i assume the air filters not up to the job.as the car gets hot air from RH side AND MINE GOES HEEPS BETTER with water temps in the high 90's.
some of the Zcars,I think 280Ztarga, are efi.never seen a 260 EFI,the turbo wasnt a spec for australia.and some usa models have b/w T5.I think there is a spec difference from state to state in OZ untill 1988,also states other than NSW,VIC AND LATTER TAS had seporate distribution networks and in 1908's have different ADRS.280C have efi.I had planned to use a L20A,L24 twin carb in my holden many years ago,so i was looking at ADR complience and needed a L24E,L28E..