Holden Special Vehicles (HSV) was the officially designated performance vehicle division for Holden. Established in 1987 and based in Clayton, Victoria, the privately owned company modified Holden models such as the standard wheelbase Commodore, long wheelbase Caprice and Statesman, and commercial Ute for domestic and export sale. HSV also modified other non-Holden cars within the General Motors lineup in low volumes.

Tom Walkinshaw Racing (TWR) was a motor racing team and engineering firm founded in 1976, in Kidlington, near Oxford, England, by touring car racer Tom Walkinshaw.