Pre-race engineer change for Mostert/Coulthard Ford
Last-minute engineering change for #25 Mobil 1 Optus Ford at The Bend
Chaz Mostert/Fabian Coulthard to be engineered by WAU Team Principal Carl Faux
Regular engineer Sam Scaffidi returned to Melbourne overnight
Walkinshaw Andretti United Team Principal Carl Faux will oversee the Chaz Mostert/Fabian Coulthard car for Sunday's AirTouch 500 at The Bend.
The #25 Mobil 1 Optus Ford Mustang will be without regular engineer Sam Scaffidi for Sunday's race.
Scaffidi returned to Melbourne on Saturday night for family reasons, with team boss Faux stepping in for the 102-lap Race 26 on Sunday.
It comes as WAU CEO Bruce Stewart watches on remotely, with Faux now spearheading both the team and the #25 Ford on the ground.
"Unfortunately, a few little things have transpired this weekend that Sam Scaffidi can't be with us today," Mostert said on the broadcast.
"Today we're racing for Sam and his family, he's the most passionate bloke we have in the team, we're going to try and do the job for the team.
"He gave us a pretty good car through practice and qualifying, and no doubt he's given us a pretty good race car today too, probably a bit better than a top 10 car. Looking forward to it."
Engineering guru Faux was charged to lead the Toyota GR Supra project ahead of the brand's arrival in Supercars from next season.
The Briton joined WAU in late 2017, just after watching a car he designed, the Subaru Levorg, win the British Touring Car Championship title with driver Ashley Sutton.
Faux also designed the MG6, which won the the 2014 BTCC manufacturers crown.
Before joining WAU, Faux also worked with the likes of Triple Eight (UK), RML and Team BMR,.
The Mostert/Coulthard Mustang will launch from 10th for Sunday's race, with Mostert initially qualified eighth.
The two-time Bathurst 1000 winner was hit with a two-spot grid penalty over an impeding incident with PremiAir Racing's Richie Stanaway in Boost Mobile Qualifying on Saturday afternoon.
The Ryan Wood/Jayden Ojeda sister car will start alongside the #25 in ninth.
Wood made an error during his Shootout lap on Saturday afternoon, and wound up 10th before the Mostert penalty rejigged the results.
The AirTouch 500 at The Bend will commence at 1:45pm local/2:15pm AEST.
