Chandhok and Senna sign for iSport

The pair will compete in both the main series and the new Asian series, which gets underway in January.

"Following our winter test programme, we set out with a target of signing the two drivers who performed well in the tests and wanted to do both series," the team said in a statement.

"This line-up allows the team more time together whilst we work with a familiar car in Asia, so that we should be in better shape when it comes to developing the new car."

The team added that they believe their new signings will fit in well, and both are expected to challenge at the front next year.

"The human relationships have always been very important to iSport and in these two drivers we believe we have a very strong partnership that will work well together and integrate fully with the team," the statement added.

"We watched Bruno's progress through 2007 and feel sure that he is ready to mount a strong championship challenge.

"Karun was one of the surprises of 2007. He is calm and intelligent and will form a great pairing with Bruno."

Senna and Chandhok both scored a victory in their rookie GP2 seasons last year. Senna finished eighth in the standings with Arden, while Chandhok was 15th with Durango.