WAU Team Principal Bruce Stewart said the livery was a special way to thank all who followed the team’s Holden journey.
“We wanted to do something special for the last ever Holden race,” Stewart said.
“It just wouldn’t be right if we didn’t have the lion and the helmet on the side of our cars for one last time.
“We know how much it means to so many people.
“This team has had such a long a storied history with Holden, we bled red, our fans bled red.
“For the final roar, it’s only fitting we reflect back on the journey we’ve had and thank everyone involved, from the fans who have supported us through thick and thin, the thousands of people who contributed to Holden over its journey, and everyone here who has been a part of our team.
"It finishing in Adelaide is also fitting, with so many people contributing to the Holden legacy just down the road at the Elizabeth plant, the place Nick’s father, grandfather and great grandfather worked as well – these people were the lifeblood of Holden.
"A thank you to all of our partners who have supported this, we are looking forward to hopefully sending the brand off in the best possible way over the weekend.”
The new-look WAU cars will first hit the track in Adelaide on Thursday.
Mostert and Percat are third and 16th in the points respectively.
Tickets for the VALO Adelaide 500 are on sale on Supercars.com and Ticketek.com.