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It already has bigger tires. The rear axle is being re-geared to closely match the stock tire/gear configuration.
The ride height is approximately (or will be when the springs arrive) 5" taller in front and 3" taller in back.
Most all of that is because of the tire change (35"). The only suspension lift is with 2" front coils.
Many folks on FullsizeBronco.com have gotten 20mpg on stock (235's) size tires, or close to it (31" tires)
My goal is 20 mpg with 35" tires.....If I'll be close to achieving 20+mpg with those tire sizes I'll stick to a built for MPG 5L, or possibly a re-built 4.9L I6.
If the best I can push is 16 or 17, I'll start looking into a diesel swap.
I may apply some tricks on the wife's van. It already gets good mileage IMO, but seems like it could be improved.
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