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				 Dana 60 3.23 gears? 
 
			
			Anyone try out doc differential 3.23 gears for Dana 60 rear ends?  I've noticed they are the only one I have seen offer it.  I have a 66 gmc 1500 with a 4 speed granny tranny being pushed by a chevy 350 short block.  Was looking for more hwy cruising speeds.  Current gearing can pull a house but it screams past 50.  Thanks
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