I am running the MileMarker 449SS hubs on my F250 and LOVE them. I originally had the auto locking ones, and they were nothing but trouble. The price of one was more than the price for both of the 449SS's. If you have the Dana front straight axle they should be the same (even though it's F250 vs F350). Definitely go that route regardless. Much better hub. I will say though, put removable loctite on the hub bolts. 800 miles after the conversion and I heard this clicking. Turned out to be the hub flopping around inside the axle. Lost two of the Allen bolts out of each side.
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