[2][7] Following the shootout, Huffaker and Josh Green were awarded the scholarship, and traveled to England to take part in the two events with Cliff Dempsey Racing.

[8] Huffaker began his Walter Hayes Trophy campaign with a victory in his heat race, taking advantage of a collision between leaders Joey Foster and Michael Moyers.

[11] In 2020, Huffaker moved to the IMSA SportsCar Championship with PR1, joining the team's LMP2 program ahead of the Grand Prix at Road Atlanta.

[16] At the end of 2021, Huffaker traveled to Bahrain to take part in the WEC Rookie Test, where he piloted an Aston Martin Vantage GTE.

Alongside Mikkel Jensen and Ben Keating, Huffaker claimed his third consecutive victory at Sebring, and added another at Watkins Glen,[18] once again scoring the Michelin Endurance Cup title in the LMP2 class.

[20] Huffaker also embarked on a double program with Kessel Racing, taking on the FIA World Endurance Championship and European Le Mans Series in a Ferrari 488 GTE.

[21] The trio claimed their maiden podium in the opening race of the WEC season at Sebring, although Huffaker's debut at the 24 Hours of Le Mans saw the team retire with under 100 laps completed.