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I've got a '95 C3500 Dually with a gov lock in the 14BFF. No problems yet but I've got only 65,000 miles on it. When it blows I'll switch to one of the new air lockers. /forums/images/graemlins/waytogo.gif
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i dont believe there is an air locker available for the 14bFF. the detroit is the best way to go.