front axle is wider than the rear?

[1968k10blue]

IIs it normal for a 68 k10 to have a wider front axle than the rear? On a side note, is there anyone here that might want to trade differential gears? I know it's the wrong thread but I have 4.11a on both front and rear and if anyone wants to trade for a set of 3.73s that would be great. Mine runs a little too high RPMs at speed since mine will be a dd and I want a little better gas mileage without sacrificing too much torque.
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