Hey guys,
thanks for everyone's suggestion.
I end up getting the parts from partsouq.com
I was refer to this by a friend who have ordered from there.
At first it looked kind of dodgy (especially on Google it's address is at United Arab Emirates :o ), so I went throught many different car forums and found people have order from there with excellent experience and very good price.
I end up getting the two rear OEM struts, and shipped to Sydney (FedEX to my door).
All for under $500.
The best part was I ordered this last Sunday 16th, and got it on my door 3 days later on 19th!!!
I have no idea how is that even possible not even taking into account the low price.
Anyway now I just need to find some reasonable place to install them.
Called up a few places, some won't do it because they afrid of warranty issue. Other want me to bring the car in for a " quote"
Can anyone suggest anyone or good place that they have used?
I have also been told by a Lexus dealer the 2011 IS350 Sports Luxury Shocks are not the same for my car.