GP3 Series newcomers Koiranen GP have signed Aaro Vainio and Patrick Kujala to partner Kevin Korjus in their driver lineup for the 2013 season.

19-year-old Finn Vainio will be contesting his third season in GP3. In 2011 he was 15th for Tech 1 and last year came fourth for Lotus GP, winning from pole in Monaco. Finnish media last week quoted Vainio’s former manager Nicolas Todt as saying he was no longer working with the driver.

Despite only being 16, Spanish-born Finn Kujala already has two years in cars under his belt. In 2011 he finished fifth in the French F4 Championship in 2011 and in 2012 raced in Formula Renault 2.0 for Koiranen, coming sixth in the Alps series and 23rd in the Eurocup.

20-year-old Estonian Korjus had previously confirmed he will switch from Formula Renault 3.5 Series to race for Koiranen, who took him to the Eurocup Formula Renault 2.0 title in 2010 before winning three FR3.5 races for Tech 1 in 2011.

“Entering GP3 series is a major challenge for us, but we are confident we can do the job,” said Koiranen team manager Afa Heikkinen. “We have the right people and good drivers, I believe we can challenge front runners in the course of the season. However, we have no illusions, we know it won’t be easy.”