The pair, team-mates in 2021-23 at the Arrow McLaren IndyCar Series squad, will make one-off appearances at Daytona on 27-28 January in the pair of LMP2 class ORECA-Gibson 07s run by the Anglo-America team co-owned by McLaren Racing boss Zak Brown.
O’Ward, who is remaining at Arrow McLaren for a fifth season in 2024, will share United’s #2 ORECA with full-season drivers Ben Keating and Ben Hanley, as well as Nico Pino, who will contest the long-distance rounds in the car.
Rosenqvist, who is switching to Meyer Shank Racing for his 2024 IndyCar campaign, will race the sister #22 car with Paul di Resta and Dan Goldburg, while the fourth driver who will also contest the remaining four IMSA enduros has yet to be announced.
Ward will be bidding for a third class victory at the Daytona enduro.
The Mexican won on debut in 2017 in the Prototype Challenge division aboard the one-make ORECA-Chevrolet FLM09 as part of a full-season programme with Performance Tech Motorsports that yielded the class title.
He won in P2 aboard a DragonSpeed ORECA in 2022, his most recent appearance at the Daytona International Speedway.
Source: Autosport