Best thing you can do is get the work done in QLD register it there while
staying at a backpackers or WWOOFing at a farm then go back home :)

There are sandrails and light aircraft all over the world that swear by
suzuki G than the 4age. Which shows that if a 400kg sandrail is a weapon
so would a datsun with lighter weight and more poweful engine.
615kg ute with g13bb will be at least 590kg.
Carbon leafs springs at the rear and coil overs at the front 570kg.
That would scare kit cars pretty easily since most lotus 7 are 650kg and up.