Experienced GP2 driver Fabio Leimer and category returnee Nathanael Berthon will drive Racing Engineering's cars in next week's Catalunya tests.
Leimer has been in GP2 since joining Ocean for the 2009/10 Asia series. He drove for Rapax this year, and has two victories to his name from the sprint races at Catalunya in 2010 and '11.
Berthon drove for Racing Engineering in this year's Asia series, starting well with 10th on the grid for the Abu Dhabi opener but failing to score during the mini-championship. He then returned to Formula Renault 3.5, where he only finished 13th in the standings with ISR despite winning a race and taking seventh in the championship during his rookie year with Draco in the previous season.
Racing Engineering ran Dani Clos and Christian Vietoris in GP2 this year, taking two race wins and third in the teams' standings.