You'll like the 4.30 gears. Do you have a tuner so you can correct the tire size and axle ratio in the PCM ? The speedo will read higher than actual because the 4.30 gear ratio actually over compensates for the 35" tires.
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2011 F-350 C.C. 4X4 LWB 6.7PSD
2010 Montana Mountaineer 345DBQ
2005 F150 FX4
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