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Wallew,thanks for the info it will help ease the confusion.I'm lucky that i only have to flip two hubs(bobed M109A2)I've owned and worked on M-37s for twenty years,but have never had anything in the 2 1/2 ton series. I took this truck in on a trade for a '51 M-37 and really don't have the reference material to fall back on like i do for the 3/4ton. The 3/4ton's have diff. size inner/outer bearings that's what had me thinkin' a little backwards. Thanks again,Jon.