The Sandman was an option package available on the standard Holden van/ute and the Kingswood ute only, option XX7 or XU3 depending on load capacity. It was a standard package but you could add optional extras to it.
HJ Sandman van came standard with 173ci engine, drum brakes all round, 4sp gearbox, door operated courtesy light, no radio, GTS sports instrumentation with clock, flow through ventilation only, bucket seats with full console, loop pile carpet, full length hood lining, GTS steering wheel, blacked out grill and headlight surrounds, 6" wide all steel sports wheels vented for brake cooling, GTS slotted front guards and paint outs (Decals) available in your choice of either black or white.
Options available:
Power assisted front discs (standard on V8)
Choice of 4.2L or 5.0L V8 engines
T Bar Auto
Limited slip diff
Superlift shock absorbers
Fast ratio 16.7:1 manual steering box
Variable ratio power steering
Wheel trim rings
Metallic paint
Forced air ventilation
Fully integrated Air Conditioning (Factory fitted)
Choice of radios or radio cassette
Tail tent
Hope this helps you out with your restoration, Byron may be able to add to it if Ive missed anything.
Also HJ Sandman vans had painted tail light surrounds not chromed and the air vent in your drivers side is incorrect as it should be the standard HJ revolving type.