The following option chart is from the Holden HQ catalogue “Holden – The Great way to Move” issued July 1971.  It is useful in determining whether your HQ has “official” factory options or not.
Performance options Price Belmont Kingswood Premier Monaro Monaro GTS Monaro LS
Power assisted front disk brakes (Standard with V8’s) $60 Y Y Y STD STD STD
Power steering $125 Y Y Y Y Y Y
Limited slip differential $45 Y Y Y Y Y Y
Full instrumentation: Tachometer, Oil pressure, Temperature and Ammeter gauges $45 Y Y Y Y STD Y
Oil pressure and temperature gauges only $15 Y Y Y Y NA Y
6.00″ Sports wheels (mandatory with D70, ER70 or FB78 tyres) $100 Y Y Y Y STD Y
6.00″ Wide wheels (mandatory with D70, ER70 or FB78 tyres) ? Y Y Y Y NA Y
Dual exhausts (with V8’s only and not on wagons) ? Y Y Y Y Y Y
Y = available as an option on this model NA = Not available on this model STD  = Standard on this model
Heavy Duty Items options Price Belmont Kingswood Premier Monaro Monaro GTS Monaro LS
Superlift rear shock absorbers $30 Y Y Y Y Y Y
Heavy duty springs and shock absorbers $10 Y Y Y Y Y Y
Heavy duty radiator ? Y Y Y Y Y Y
Heavy duty battery ? Y Y Y Y Y Y
Heavy duty air cleaner (only on 6-cyl engine) ? Y Y Y Y NA Y
Y = available as an option on this model NA = Not available on this model STD  = Standard on this model
Interior options Price Belmont Kingswood Premier Monaro Monaro GTS Monaro LS
Carpets $22 NA Y STD Y STD STD
Fixed front bucket seats $50 Y Y Y NA NA NA
Reclining front bucket seats $80 NA Y Y STD STD STD
Power operated side windows $90 NA NA Y NA Y Y
Head restraints $20 Y Y Y Y Y Y
Radio – manual $100 Y Y Y Y Y Y
Radio – push button $110 Y Y Y Y Y Y
Rear seat speaker (not on wagons) $10 Y Y Y Y Y Y
Nylon cloth trim $15 NA Y Y NA Y Y
Air conditioning (not with “173” engine) $430 Y Y Y Y Y Y
Power operated tailgate window (wagons only) $50 NA Y Y NA NA NA
Y = available as an option on this model NA = Not available on this model STD  = Standard on this model
Exterior options Price Belmont Kingswood Premier Monaro Monaro GTS Monaro LS
Wheel trim rings (not with 6.00″ wheels) $25 Y Y STD Y NA STD
Black vinyl roof (not on wagons) $60/$80 NA Y Y Y Y STD
Antique brown or Antique saddle vinyl roof (not on wagons) $60/$80 NA Y Y Y Y Y
Power aerial (not on wagons) $45 Y Y Y Y Y Y
Tinted laminated windscreen (shaded upper) $50 Y Y Y Y Y Y