Paul Walker's brother Cody admits he was nervous about watching 'Furious 7' the first time

LOS ANGELES, April 4 (UPI) -- Cody Walker admits he was anxious and emotional preparing to watch for the first time Furious 7, starring his late brother Paul.

Paul filmed most of the picture before his death in a fiery, off-set car crash Nov. 30, 2013. His siblings Cody and Caleb stood in for him so the film could be finished.

"To be honest, I'm a little nervous to see the completed project from an emotional standpoint," Cody Walker told E! News before the movie's Wednesday debut.

"We'll be watching it for the first time at the world premiere. I know it's going to be very emotional. So far, from what I've heard and seen, I think Paul would be proud," he said. "I want this film to be the best one yet -- and the most memorable. A lot of people are going to remember Paul by this movie, and I want it to be worthy."

Walker described the process of helping out on the film after his brother died as "an absolute roller coaster."

"Lots of tears, lots of laughs," he recalled. "It's an experience that I was very hesitant to commit to, but I'm really glad I did. I met a ton of really amazing people and made several life-long friendships."