Stan Foster, the films post-production coordinator, dubbed the voice of Myron Bruce Lee. In addition, the final chase scene shot on the tram in Palm Springs, was filmed MOS (without sound) and presented extensive post-production sound work for the meager budgeted sound editing staff.
George Lazenby was friends with Bruce Lee and star Jim Kelly had appeared with him in Enter The Dragon (1973).
George Lazenby and Harold Sakata had both appeared in a James Bond movie before this. Lazenby had played Bond in On Her Majesty's Secret Service (1969) and Sakata had played the henchman Oddjob in Goldfinger (1964)
When Felicia calls the Captain, she tells him she is at 1827 21st Street in Santa Monica. The building that is on that property, is a 7 bedroom home that was built in 1920. 2022 value is two million dollars.