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Speedcafe.com expects the news of Mostert's drive to be confirmed by the factory Ford team in the coming days.
It is believed that the deal is only for two rounds, although dialogue is underway about FPR entering Mostert in a full program next season.
Mostert and FPR Team principal Tim Edwards could not be contacted by Speedcafe.com today.
There has been no official news to come from Miles Racing, although the team did make a recent post on its Facebook page, stating that former Formula Ford driver Ryan Cochran “could possibly get strapped into the seat of the new Miles Racing FG in a couple of weeks at Sandown.”
Mostert has impressed in his debut Fujitsu V8 season, currently placed seventh in the two-car privateer team.
The 18-year-old Queenslander is a multiple Australian karting champion (Junior National Light and Junior Clubman) and the reigning Australian Formula Ford champion.