Body removal from chassis

Adam -
Is it possible to purchase a wrecked modern Challenger in Australia?
One of our club members purchased a rolled-over Challenger here in SoCal, removed the interior, cut the body off and put the complete floorpan/running gear under his 1970 Barracuda. He also adapted the entire interior to the Barracuda. The result was a 50-year old Barracuda body with a complete modern Mopar driveline and interior. Everything works as it should, including the heated exterior rearview mirrors.
It's a beautiful car and most people at car shows don't have a clue what went into building it.
I don't know if your Aussie laws would permit something like this or not.