Caleb and Cody Walker will be used during select scenes, while computer graphics will be utilised to "mask any discrepancies between their bodies and his".However, they will not be replacing the franchise star in the film.In a message on the movie's official Facebook page, producers write: "Paul had already shot his dramatic scenes and most of his action for Fast & Furious 7, and it's among the strongest work of his career."We have resumed shooting and now welcome Paul's brothers, Caleb and Cody, into our Fast family. Caleb and Cody are helping us complete some remaining action for their brother and fill in small gaps left in production. "Having them on set has made us all feel that Paul is with us too."Production on the project was halted after the actor died in a fiery car crash in November, but filming resumed earlier this month.