The race won’t just be Blomqvist’s Bathurst debut, but will also mark the first Mount Panorama start for the 720S GT3.
“I am very much looking forward to joining 59Racing at Bathurst and driving the McLaren 720S,” said Blomqvist.
“Having never raced at Bathurst before it looks like a very challenging circuit, but I have some great co-drivers that I’m sure will help me. I’m looking forward to racing with the Alvaro, Ben, and the whole team.”
Blomqvist will effectively be taking on new employers R-Motorsport at Bathurst, the Briton having signed a GT World Challenge Europe deal with the Aston Martin team for 2020 after parting ways with BMW last year.
Parente, meanwhile, will be making his first Bathurst start in a McLaren since 2017, a year after he teamed up with Shane van Gisbergen and Jonathon Webb to win the round-the-clock enduro.
For Barnicoat it will be a second start on Australian soil this year, following his third place with Thunderbird Carlin Racing at the recent Asian Le Mans Series race at The Bend.