The 18-year-old Heimgartner has been selected to drive Dean Fiore's car later today, while Lindbom is scheduled to do the honours at Winton.
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LDM is understood to be chasing Kiwi international Matthew Halliday to pair with Fiore in the three endurance races, although Heimgartner and Lindbom could provide back-up options should that plan fall through.
Team principal Lucas Dumbrell says he's looking forward to seeing how Heimgartner performs today, where he is guaranteed the first 30 minutes of running under the twin 75 minute practice session format.
“I'm keen to see what Andre is capable of,” Dumbrell told Speedcafe.com.
“He understands that he's not doing an audition or anything, he's just going out there to get some experience in a different car from what he's driving now.
“It's nothing too extreme, he won't get a lot of timed laps, but it never hurts to have a look at the next young talent coming through.
“Running the car will also allow us to make sure the car has rolled out of the truck fine and doesn't have any little gremlins.”