Thread: 4x4 differentials and transfer cases
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Old May 25th, 2013, 08:21 PM
BarryGMC BarryGMC is offline
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Default Re: 4x4 differentials and transfer cases
Napco was an aftermarket conversion. GM went in house and started making their own 4x4 trucks in 1960. Its hard to say what that truck is. 1960-1972 GM never offered a K truck in its one ton lines.
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