The new F-150 Tremor has a 365 hp, 420 lb-ft of torque twin-turbocharged 3.5-liter V6. (Photo: Ford)

The new F-150 Tremor has a 365 hp, 420 lb-ft of torque twin-turbocharged 3.5-liter V6. (Photo: Ford)

It’s the end of the F-150 as we know it.

Ford’s venerable pickup is set to have its steel body replaced by aluminum later this year. It’s a radical move for the top-selling truck that’s aimed at reducing weight and improving fuel economy in a segment that needs it.