Holden HT with Holden Brougham front end fitted. Which would make it unique. Not many HT panel vans with Holden Brougham front ends me would finks.
Thats a GTS Monaro bonnet on a custom panel van vehicle. Mr Show n Shine
Who did those modifications? Rare as rockin horse **** even in its day
Maybe MR Panel van had engineering certificates? Although Queensland...