Commercial variants were offered in three types: coupé utility, panel van, and later from 1971, a heavy-duty Holden One Tonner cab chassis.

The Kingswood sedan and wagon were released as part of the new HK series of Holdens in January 1968 (commercials: March 1968).

The Monaro and the Brougham were introduced mid-year of 1968, thereby broadening GM's range of locally built full-size cars in Australia.

The 307-cubic-inch (5.0 L) Chevrolet V8 engine had remained an option for all HT series models except Brougham until stocks were depleted and it was replaced with the 308.

The HG series of July 1970 was a minor refinement of the existing formula, adopted as the marketing platform for the new three-speed automatic transmission option called Tri-Matic.

These HG commercials can easily be identified by the A prefix on the chassis number appearing on the firewall and for vehicles built for sale inside Australia on the Safety Compliance Plate.

It featured a perimeter frame and semi-monocoque (unibody) construction, and was the first full-size Holden to have coil spring rear suspension.

Over the following years this led to a large decline in export vehicle revenue needed to fund the HQ-HZ series replacement.

It was arguable whether Australian buyers favoured this engineering philosophy and it was not until the 1977 HZ facelift that radical changes were made to the suspension to improve handling.

[8] In Mid 1972, Holden released a limited edition version of the HQ Belmont sedan, named 'SS' Adopted from Chevrolet Super Sport Models in the United States and other markets, Option code 'XV2' Included the choice of three very 70's Colours: Infra Red (Dark Orange), Lettuce Alone (Light Green) or Ultraviolet (Purplish - Grey Metallic), Vinyl Stripe and 'SS' Decal kit supplied by 3M Australia, a choice between 253 (4.2L) or 308 (5.0L) Holden V8 engine mated to a 4 Speed Manual Gearbox backed by a 10-Bolt Salisbury Differential with a 3.36:1 Ratio (and painted.. unusually, White, Along with the driveshaft), along with Pontiac-style Rallye weels.

On the inside: Standard Black Belmont Door trims, Optional armrests, However, unusual to the Belmont, A full Sport Gauge Cluster, Steering Wheel, Carpet, Floor Shift, Center Console and Bucket Seats in Black Vinyl with Houndstooth or Flax inserts, The SS was initially limited to 1800 units, but extended by 1300 due to unprecedented sales demand.

[9] This value package of options proved popular and made return appearances on various Holden models during the next twenty years or so.

Released in 1974, the HJ series received some major frontal appearance styling changes, taking away some of the "softness" of the HQ cars.

[10] Added features for these cars included automatic transmission, radial tyres, floor carpeting, radio, and a range of two-tone body colours.

Some HJ series Premier based vehicles were assembled by Mazda in Japan, which fitted with the company's rotary engine.

[11] The car, manufactured between 1975 and 1977 sold as the Mazda Roadpacer was quite heavy and the rotary engine of the time was severely underpowered.

When the HX was released, government emissions controls had been tightened and Holden needed to make significant changes to their engines.

The 1977 HZ series received minor updates to the exterior, and saw the introduction of what Holden termed "Radial Tuned Suspension" (RTS) on all models.

RTS made significant changes to the suspension of the car, greatly improving the handling finesse, while at the same time not compromising ride quality.

The final HZ Sandman, featured a choice of V8 engines only, along with a four-headlight grille and under bumper front spoiler.

By the end of 1979, the Sandman had largely lost its place in the contemporary Australian youth culture—order figures were down and many of the vehicles were now being sold with the stripes and tailgate logos deleted.

Production of the entire WB-series finished in 1985 when Holden announced they were vacating local production of large luxury and commercial vehicles—due to economics—to concentrate on their medium car range, i.e. Camira and Commodore, and imported Isuzu commercial product.After the development of the HQ series and the delays to the facelifted HJ which saw the revised HQ released in 1973, Holden intended to replace the second generations cars with a heavily revised WA series.

GM instead utilised the then forthcoming 1977 Opel Rekord, which was significantly re-engineered and released as the Commodore in 1978 with Holden's own powertrains.

[citation needed] Early Holdens were manufactured in New Zealand at the General Motors New Zealand plant in Petone until 1967, and Kingswoods plus other Holden luxury levels were later assembled from complete knock down (CKD) kits at the new car plant at Trentham Upper Hutt further up the Hutt Valley from Wellington.

The South African version of the HQ was coded AQ, and was very similar to the Chevrolet 350 sold by Chevrolet/Vauxhall dealers in New Zealand.

[21] The Australian sitcom Kingswood Country derived its name from the car the lead character, Ted Bullpit, drove (though it was replaced with a Holden Commodore later in its run).