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04-15-2008, 11:13 PM
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67-72 Addicted
Join Date: Oct 2007
Location: Guelph Ontario
Posts: 256
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3/4 Ton rear end question
I have a 1968 C20 and a 1970 C20 Longhorn with the eaton rear ends in them. I think they both have 4.57 gears, My question is if my trucks dont have an option that says 'posi' or 'no-spin', do they have posi's in them or was that option only???
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