If you don't need the 4x4 and have to have the half-shafts to keep your wheel bearings together, the surgery gets more serious. Pull the diff and ring gear. That will lose all the friction from the front drive. At that point you may as well remove the transfer case and lengthen the rear drive shaft.
Most folks are not that radical about MPG - yet.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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