From: TacticalTruck@aol.com
Date: Fri Dec 17 2004 - 20:26:25 PST
I would guess the hubs are the same but you will at least have to include an
air disconnect switch for the sprag control on the M39 and M809 series trucks.
The M939s have air shift front axle engagement.
Jeff
TacticalTruck.com
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