Okay, I'm no mechanical guru so don't shoot me if I'm wrong....but I am good at desktop resarch ;-) From what I can find online, the Aussie derestriction kit is based on the following two parts:
17253-MKE-A50 (Airbox hose/intake pipe)
38770-MKE-A52 ECU (same as US ECU)
US forums are talking...