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Q: Ring and Pinion change on 2008 Ford F-350 Super Duty

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Who has successfully changed out differential gear to higher gear? I want to go from 4.30 to 3.73 gear ratio to improve fuel economy since I am no longer planning to haul heavy 5th wheel.
If is 4x4 then will need to do both axles. This is a big job and best left to experts. This is nothing you want to get into if have no experience
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