The 2013 Formula Renault 3.5 grid has been completed by Zeta Corse signing Mihai Marinescu and Emmanuel Piget ahead of this weekend's season opener at Monza.
Formula 2 race winner Marinescu returns to the series full-time after making 11 starts in 2009, while ex-Formula Renault and Euro F3 Open competitor Piget, who last raced in 2010, currently has a deal for Monza only.
Team boss Claudio Corradini explained that the team's upheaval over the winter (as it took over the BVM Target entry) had proved a setback as it tried to sort its driver line-up.
"The Zeta Corse programme started a little bit late," he said. "When it came to signing drivers many of them were already busy.
"Marinescu proved key in pre-season and will be with us throughout the year, but it's been tough to secure a second full-time racer.
"Despite sampling several drivers in testing, no deals have come. For the remaining rounds [after Monza], we'll see."
2013 Formula Renault 3.5 line-up so far: Tech 1 Racing Nigel Melker Mikhail Aleshin Arden Caterham Pietro Fantin Antonio Felix da Costa Fortec Motorsports Oliver Webb Stoffel Vandoorne ISR Sergey Sirotkin Christopher Zanella Lotus Marlon Stockinger Marco Sorensen Carlin Jazeman Jaafar Carlos Huertas Comtec Racing Daniil Move Lucas Foresti International Draco Racing Nico Muller Andre Negrao DAMS Kevin Magnussen Norman Nato P1 Motorsport Will Stevens Matias Laine Pons Racing Zoel Amberg Nikolay Martsenko AV Formula Arthur Pic Yann Cunha Zeta Corse Mihai Marinescu Emmanuel Piget