"Naturally the car I am working on is from my era of racing. It is a Project Blueprint-spec car which has the live diff rear and is the same one that I raced my whole career," he said.
"It's always good to come back to Ford, as between myself and my dad's career we have spent majority of our time racing in Ford cars.
"To continue supporting the Ford badge and to be here, helping out Jason, and to be a part of MSR's support program is really exciting."
Gomersall was keen to begin his own campaign, and couldn't hide his excitement at having both Setons in the MSR family.
He will run backing from UNIT in 2021, which also sponsors Kostecki's main game entry.
"I am really excited to be back in the Super3 field again this year and to have Aaron Seton join the team in Super2 for a full season after a very interrupted season in 2020 with COVID," he said.
"There have been a few other changes in our support team at MSR with Glenn Seton and Dean Canto engineering our two cars in Super2 and Super3 for Bathurst.
"The whole MSR support crew are really looking forward to working with Glenn and Dean this year, a couple of guys with an amazing amount of experience around Bathurst.
"I’ll definitely be looking to pick their brains on the track walk when we arrive at Bathurst."
"The UNIT livery on my car looks absolutely amazing and stunning so I can’t wait to show it off at Bathurst.
"It is a privilege to have the combined experience of Glenn and Dean join our support program and I am looking forward to an awesome season with Matt Stone Racing."
Long-time MSR engineer Sheldon Auhl will also return for 2021, but will miss pre-season Super2 testing at Queensland Raceway and the opening round in Bathurst amid the recent Western Australia lockdown situation, and the impending birth of his first child.
As a result, decorated Supercars veteran Dean Canto will step in to fill Auhl's place before returning as engineer for Chris Smerdon, MSR's second Super3 driver.