At the insistence of his long-time open wheel rival turned touring car racer John Bowe, who to this day rates him as the best Australian driver he raced against, Costanzo was drafted into the Volvo Dealer Team in 1986 for the Castrol 500 at Sandown and the James Hardie 1000 at Bathurst.
1986 | Indianapolis 500 | Fortune 500 | 1986 in music | 1986 FIFA World Cup | The Phantom of the Opera (1986 musical) | ATP World Tour 500 series | S&P 500 | 1986–87 in English football | Daytona 500 | Castrol | 1986 in film | 1986 World Series | 1986 in sports | Fiat 500 | 1986 ICC Trophy | Tax Reform Act of 1986 | Sandown 500 | Pirates (1986 film) | Model 500 | Galaxie 500 | Fortune Global 500 | Deloitte Fast 500 | 1986 Commonwealth Games | 1970 Indianapolis 500 | United States Senate elections, 1986 | United States House of Representatives elections, 1986 | The Wonderful Wizard of Oz (1986 anime) | MD Helicopters MD 500 | Immigration Reform and Control Act of 1986 |