The rumour mill went into overdrive in July when the V8 Supercars commission - of which Skaife is chairman - rubber-stamped the wildcard, with ex-MotoGP star Casey Stoner mooted as a driver.
Six-time Bathurst winner Skaife said the team had about six or seven drivers on their initial list - including Stoner, who has been driving for Red Bull Racing in the V8 Supercars' second-tier category since switching to four wheels at the start of the season.
But the final decision on the line-up ultimately fell to Triple Eight owner Roland Dane.
"If Casey wanted to do it, I'm sure Roland would've put him in," Skaife said.
"One of the things that was important for us was to have two world-class international drivers ... because we're continuing to expand our market and that's one of the things that's going to work for us with this venture."
Priaulx has previously competed at Bathurst in a V8 Supercar, though his best result in the series was in a Triple Eight Holden paired with Lowndes at Surfers Paradise in 2010.
Ekstrom will be making his debut at Mount Panorama.
The V8 Supercars' endurance series starts next week at the Sandown 500, before the Bathurst 1000 on October 10-13.
- AAP