Bollywood actors Shah Rukh Khan and Salman Khan might be collaborating after 27 years for a thriller film, penned by Aditya Chopra, that could be the biggest movie of Indian cinema.

As per recent reports, the `Karan Arjun` duo is currently in talks with the producer for thea project that will cast both the actors in the lead roles. The film is going to be the costliest film in Indian cinema and details of the movie have been kept under wraps.