So I believe the good one, here in the U.S. at least, is the Caprice PPV.
Totally boring looking but a few of them have iron block LS based engines displacing 6.2L. It's the same platform as the old Pontiac G8/Chevy SS, so it's actually australian under there.
I have a friend that bought a used one from an auction and then swapped an LSA supercharger from a cadillac CTS-V onto the car. It was a hilarious burnout machine on shitty all season tires.
This is not my friend's car, but it is a supercharged Caprice PPV.
Here's a stock one circling VIR