Motorsport.com understands the team has agreed a two-year deal with telecoms giant Optus to continue backing Mostert’s car.
Optus joined the WAU as main support for Mostert’s car earlier this season, sharing the naming rights with long-time WAU partner Mobil 1.
The new deal means Optus will follow Mostert and WAU through the GM/Ford split, with Mostert racing an Optus Mustang for the first two seasons of the Gen3 era.
WAU not only faces the transition to a new generation car next season, but also looks forward to its long, storied partnership with GM.
A former Holden factory team that made the Holden Racing Team brand one of the most iconic in Australian sport, announced a high-profile defection from Ford earlier this year.
WAU will be part of five factory-supported Ford teams, spanning 11 Mustangs on the starting grid.
There is speculation the team will celebrate the end of the GM/Holden era with a special livery for Mostert and Nick Perkat’s cars at the 2022 Adelaide 500 in four weeks’ time.