Because I installed a 2013 5.7 Engine in my 2006 Dodge Magnum I had to go see the California Smog Referee to get inspected. In California all cars 1975 and older Have to get a smog inspection every 2 years. New cars don’t have to get smogged until they are 8 years old. After sending photos and receipts of my setup I had to go to a shop and get a diagnostics done to verify all emissions items were working properly. Afterwards it was a trip to the local Referee location to get my final inspection.