okay confirmed with vicroads

to re register a vehicle from interstate you will require a receipt with:

Name
Address
Make
Model
Vin/Engine numbers

theres a 4% stamp duty

victorian rwc

and the car may need to be inspected if there is anything on the database ( i'm assuming defects/epa etc.)

the car should be kept on NSW plates until victorian plates are issued and a receipt is provided for the refund of registration from RTA.