Thanks MBL87560SEC & ianrandomA Gen 2 500 or 560 airfilter box will have two snorkels certainly better than the one. Then there are they air inlets alongside the radiator. You’d need those bits for the passenger side..
Fellow Aussie KRH has a good write-up on this subject too. A search will help you there.
MBL
Thanks Tusabes, I didn't have a set budget. Just wanted to see how i could get the best intake for performance.Forget about the type of air filter , that won’t help . The type of air box (dual snorkel ) and the type of intake (such as redesigned by Carobu ) make the actual difference . The only question is how much you are willing to spend .
theres is no magic $20 performance Improver filter for these underpowered cars . It requires serious money and parts to have noticeable gains