POPI THE SAILOR

Hey guys, I am new here and I would appreciate your advice, We are planning to move to Oz husband wife and 2 kids. We own 2 cars and a motorhome all of them registered to my name and have been for more than 12 months. All vehicles are used by my wife and myself her name is on the insurance but not on V5 My question is can I import one of the cars and the MH or not ? Your help is much appreciated .