Porsche has confirmed its full-season GT entries for the World Endurance Championship and IMSA Sportscar series next year.
The manufacturer announced its plans at an end-of-season gala in Weissach, where it also celebtrated the recent success of the out-going 919 LMP1 car.
Porsche's Le Mans effort will combine the two double entries from WEC and IMSA, meaning a record four 911 RSRs will line up at the French enduro next June.
Former Ferrari driver Gianmaria Bruni has been moved to the team's WEC entry, and will share a car with 2015 GTE-Pro champion Richard Lietz.
Meanwhile, the sister effort for the 2018-19 'super season' retains its 2017 pairing of Michael Christensen and Kevin Estre.
In IMSA, Porsche will run two cars with Le Mans winners and former LMP1 drivers Nick Tandy and Earl Bamber returning to the GT racing fold.
The pair will be placed in different cars: Tandy is set to share with Patrick Pilet, while Bamber is listed alongside Laurens Vanthoor, who was signed last year from Audi.
Frederic Makowiecki and Bruni will join the two IMSA pairs for the four-round North American Endurance Cup, which begins in January at the Daytona 24 Hours.
Frenchman Makowiecki is also down as an additional driver at Le Mans, joining the Bruni/Lietz car, while Vanthoor will assist with the other full-season WEC effort.
Vanthoor's placing in the WEC machine means the three other IMSA full-time drivers – Tandy, Bamber and Pilet – will share a single car, while factory assets Timo Bernhard, Romain Dumas and Sven Muller complete the fourth entry.
Other news from the gala included the signing of IMSA GTD champion Christina Nielsen to Porsche as a 'Selected Driver' for 2018.
Nielsen won the competitive GT3 competition with Ferrari team-mate Alessandro Balzan, backing up pair's 2016 title.
Additionally, Porsche Cup drivers Dennis Olsen and Matthew Campbell were confirmed as 'Young Professionals', joining Mathieu Jaminet and Matteo Cairoli in the factory-backed scheme.
