NSW is different, HQ chassis means it is a HQ. Replacement (blank) chassis would get a Police number. Putting on original chassis number is considered rebirthing and fraud under NSW law.

Agree with the Sean with a HZ body on a Landcruiser chassis. But not if it's a HK-HG body on a landcruiser chassis as the HK-HG chassis number is still in place as is the whole chassis. Same with a VU ute on a GU Patrol chassis.