I think it’s very safe to assume this is a kit car because as nice as this is, no one is crazy enough to mess with an original Ferrari 250 California. This kit appears to have a modern V8 out of a 2008-2013 Ferrari California. It is possible this is not an engine swap at all. The builder could have kept the entire modern California drivetrain and grafted the body over it. I couldn’t find anymore information on this project so please leave a comment if you know more.