HSV's spring pitch focuses on cheaper entry pricing but the deal on the pinnacle R8 versions has also been juiced up.
As part of its 25th birthday knees-up, the brand is re-introducing the ClubSport sedan and Maloo ute models, to sit under the hotter R8 versions.
In unique fashion, HSV is not calling its new vehicles the 2012 or 2013 range but the "12.5" line-up.
The new entry models start at drive-away prices of $64,990 for the ClubSport and $58,990 for the Maloo, both 317kW V8s.
That's about $10,000 cheaper than the respective R8 versions.
For the entry sedan and ute, wheel size lifts to 20 inches while options include a six-speed auto $2000, gloss-black 20-inch wheels $1250, vents $590, luxury lip spoiler $420 and the Enhanced Driver Interface $1190.
Don't expect the latter to pop up in everyday cars anytime soon.
To cater for people who like to take their car to track days, the interface streams real-time vehicle dynamics and performance data to the touch screen.
The information includes G-forces, power, torque and lap times.
Track-day data can be downloaded to a laptop to analyse the performance of both the car and driver.
The EDI can be combined with a bi-modal exhaust for $2990.
For the uninitiated, such an exhaust allows the noise to be kept low for staying sweet with the neighbours or louder for making an audible statement (or getting up the neighbours' noses).
A Maloo option is a hard tonneau cover with an aerodynamic sailplane for $3990.
For the R8 range, which also includes a wagon, engine output lifts by 8kW to 325kW, wheel size increases to 20 inches and leather replaces cloth as the seat material.
New options include 20-inch gloss-black wheels, hood scoops and side vents.
The luxury Senator Signature model also lifts output to 325kW while adding 20-inch dark-stainless wheels.
HSV is making available its six-piston brake package as an option on the Maloo R8 and Senator Signature.
All vehicles will also get an HSV 25th Anniversary start-up screen, build plate, internal ID plate and sill plates.