After their 2018 reunion, the Davison brothers team up for the PIRTEK Enduro Cup again this year, Alex partnering brother Will for a fourth time.
Alex and Will raced together at Sandown, Bathurst and the Gold Coast in an Erebus Mercedes in 2014 and '15.
The elder Davison missed out on a co-drive in 2016 but returned for a handful of events in '17 with Lucas Dumbrell Motorsport.
In 2018, he joined Will at the new 23Red Racing, which has now moved to within Tickford Racing.
After racing Formula Ford, Davison made his name as a young driver with Porsche overseas, including in its Supercup on the Formula 1 bill.
His focus shifted back to Australia with Carrera Cup and a maiden Supercars co-drive with Perkins Engineering in 2004.
A full-time berth in 2005 with Perkins turned into a nightmare, Davison splitting with the team before the end of the campaign.
The Melbourne driver continued to rack up Porsche rides around the world, and performed well in the enduros, over the coming years.
Stone Brothers Racing offered a second full-time chance in 2009, Davison spending three seasons with the team and finishing a best of 11th in '11.
He returned in 2013 with Charlie Schwerkolt Racing in a Tickford-run Falcon, before moving to Erebus to partner Will as a co-driver.
His Porsche experience includes a pair of Le Mans 24 Hour starts in GT machinery, in 2008 and '18.