Length of time to clear immigration and customs and travel from T1 to T2

[mwong2]

I'll be visiting Australia from the US in late April and arriving into the international terminal on a Sunday at 6:25am. Could some one provide me with their perspective on how long it would take to clear immigration and customs and travel to a Virgin Blue flight in T2?

Any insights (or tips) would be appreciated. thanks!

[RB]

I believe there are several recent threads relating to similar questions.
My experience relates to getting to T2 to catch Qantaslink which will means I am eligible for Qantas transfer shuttle.
I believe the following provides info on your options
Terminal Transfer - Sydney Airport