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There's a lot more to it than just changing the dash controls. Pick a slow day at your local Ford parts shop, and have someone pull up the parts info for manual and auto HVAC on your '04.
FWIW, my wife and I have had both types over the years; we much prefer the manual system.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.