Let’s not confuse price and rareness with quality and ability. That is a strange selection of oils for Australia and it certainly shows “money is not a factor”. What you need is an oil rated BMW LL-01, and maybe Porsche A40 since you are modified. These are both based on the Euro ACEA A3/B4 spec.
My list would be, for Australia,
Shell Helix Ultra 5W40, KV100 = 13.1 cSt (our Pennzoil Platinum Euro)
Penrite HPR5 (5W40), KV100 = 14.4 cSt, 1240 ppm Zinc.
Castrol Edge 5W40 A3/B4, KV100 = 12.8 cSt
Castrol Edge 0W40 A3/B4, KV100 = 13.2 cSt (no longer lists BMW LL-01, but still A3/B4, PorscheA40 and MB 229.5)
Mobil 1 FS 0W40, KV100 = 12.9 cSt (no longer lists BMW LL-01, but still A3/B4, PorscheA40 and MB 229.5)
Castrol Edge 5W30 A3/B4, KV100 = 11.9 cSt (it’s BMW LL-01, but not Porsche A40)
Apart from the Penrite (which is a bit richer) they all should have about 1000 ppm Zinc. They are all updating and changing specs constantly, but above is the best I can do for what is commonly available in Australia.
Me? Shell Helix Ultra 5W40 as it’s easy to find, affordable, Shell’s top-shelf product and carries true OEM approvals for A3/B4, BMW LL-01, MB 229.5 and Porsche A40. Second would be Penrite HPR5 as it’s the thickest with the most zinc (for extra protection), it carries true OEM MB 229.5 spec, but I believe their BMW spec is just “suitable for”.
Ref:(SHU PDF)(Edge 5W40 PDF)(Edge 0W40 PDF)(Edge 5W30 A3/B4 PDF)(HPR 5 PDF)(M1 FS 0W40 link)