European Le Mans champion Greaves Motorsport will race the new Ligier JS P2 in the 2016 season.
As a part of the acquisition, Greaves Motorsport will run the Ligier JS P2 alongside its Gibson 015S, with both cars being powered by Nissan and running Dunlop tyres.
Upon confirmation of the partnership, team principal Jacob Greaves said: “We were not anticipating the high level of interest for next season.
"We sold our other Gibson chassis earlier in the year so we weighed up all the options and for us the Ligier was the obvious choice.
"We plan to start the program with Ligier in December in preparation for 2016,” he added.
Onroak Automotive president Jacques Nicolet stated: “We’re very proud that Greaves Motorsport has chosen a Ligier JS P2.
"We know the professionalism of Jacob Greaves and his team, which has built up a solid set of results in endurance racing since 2011, so we’re delighted to share this new adventure with them.
"The association of the winning team in the 2015 ELMS, Greaves Motorsport, and the car that clinched the LM P2 title in the FIA WEC, the Ligier JS P2, will certainly excel on the circuits next year.
"I’m sure we can expect great results in the FIA WEC or in the ELMS," he added.
While both chassis will run in the 24 hours of Le Mans, it is yet to be finalised which chassis will run in the WEC and which in the ELMS for 2016 season.