Sync Issues: Most downloaded tracks won't align with your video file due to different frame rates (23.976 fps vs. 24 fps or 25 fps).

There is no verified, legal way to download the English audio track for Kung Fu Hustle

However, you can legally obtain the English dub through specific physical media releases and select international digital stores: Official English Dub Sources

Hulu (Region Dependent): While Netflix usually lacks the dub, JustWatch indicates it may be available on Hulu in some regions, though you should verify the specific audio options before subscribing.

You can purchase or rent a digital copy that includes the English audio track through these authorized retailers: Apple TV Store Amazon Video Fandango at Home (Vudu) : Often features the dubbed version as a language option. Physical Media

Verdict: 2/10 (Extremely Difficult to Find a Standalone "Verified" Track)

You're looking for the English audio track download for "Kung Fu Hustle"!