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KevinTJH Read your owner's manual! I don't know which bulbs do Australia get. Halogen or bi-xenon.
If it's bi-xenon, don't touch it. It's better than aftermarket bulbs.
If it's halogen, you can pick up some sylvania brighter bulbs. It's not significantly brighter than stock ones, but those will be whiter than the regular halogen bulbs. It's really simple to replace halogen bulbs. It's in the owner's manual. Counter-clock wise turn and pops out...