Not locally, I've called up Lexus of Chatswood recently and they said they don't do it anymore, not since the $ dropped somewhere back in 2012-13.
I've been doing some searching around, your only options are
- bestexhausts - can buy the Borla from there, but they just import it anyways
- xforce
- buy JoeZ from modinjapan and ship it over from the states.
I was planning on getting the Borla, then found out that the JoeZ is superior in sound and quality/fit/finish (some report more droning and smell from the Borla)
Did a bit more reading and also realized that the ISF stock exhaust doesn't come apart into several parts like the JoeZ etc. and therefore I have no way of getting it back home without renting a van/ute/whatever.