The Importance of the Coupe 4:

First Australian designed and manufactured all-wheel drive coupe. First Australia muscle car to have different width wheels front and rear. High level of collaboration between Holden and HSV to make each one (including many of the elements required being hand-made). Special high-cost tooling made for only 132 cars, with unique processes on the production line with other models being made at the same time. Use of Computer Aided Design (CAD) for development and production of unique front suspension parts. Use of specially-designed software to run the Quad-Track system. Claimed to be the most highly-engineered and best handling car HSV ever made. First modern Australian muscle car to be crash-tested with alloy wheels.