WAU heads into the new year with an unchanged driver line-up, with Mostert returning alongside Bryce Fullwood. With both drivers reaching the podium last year, Mostert believes 2021 offers room for improvement.
"The year for us in '20, we can applaud ourselves, I think we did a good job from where they have run the last couple of years," Mostert said on the latest Parked Up podcast episode.
"The expectations now, obviously having run an off-season with a direction on where we want to go with the cars, and obviously two drivers that are staying on from last year to this year, we want to come out swinging a bit harder this year and try and chase some wins.
"I know that the guys and girls are working extremely hard at the workshop, they're working on some new parts to make the cars a little bit quicker.
"I think there's a good possibility we can move forward if the cars go a bit quicker.
"Same with us drivers as well… we're all trying to strive a bit harder this year. The first year with the team was pretty good."
"Acquiring a guy like Shippy, from a different team and different culture, really brings a wider experience into the team to lean on when the results are struggling a little bit, or we've lost our way," Mostert explained.
"Shippy won't be in the team for some time until he's allowed to come to the team… as the year progresses, I think he'll have a lot more involvement.
"I worked with Shippy in the early days at FPR… he's a really good guy, really passionate like Adam.
"I'm pretty keen to work with Shippy, it has been a lot of years, I'm sure he's learned a lot from working at different places as well.
"I can't wait to get him involved with the team and pick his brain on a lot of things."