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I've got an 03 7.3, 2 wheel drive. I know it has the base axle with 3.73 gears, just wondering what kind that is because I'm looking into getting a posi unit. I know it probably says it on it but don't feel like going down there.
 

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sterling 10.25
 

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sterling 10.50

the 10.25 was used in the older trucks
 

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ooops sorry always get the 10.5 and 10.25 mixed up
 
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