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I can only tell you some of the differences between those years with the pickup version. Aluminum body, stronger frame, more HP/TQ., different interior and as you already know, the axle.
The differences might no be the same for C&C vs pickup
The cp4 has a change to produce slightly more psi. The co4 cam has a coating to slow down wear.
the engine is basically the same from 2016 thru 2019
the fuel pump was moved into the fuel tank in 2017. A return line was added to secondary fuel filter in engine bay.
starting 2017 the pcm monitors fuel pressure for a lift pump drop …if the drop is detected…the engine shuts off. Drops can be cuased by filter issues, line or filter burst, or in tank pump fail. Shutting the engine off immoderately helps protect the cp4 from running dry.
Rezvani's Latest Post-Apocalytic 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.