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  1. Engine & Performance
    Hey all, I've got a '02 Sierra 2500 I finally regularly tow with, 8,000# or so fifth wheel and a smaller car hauler. I ended up doing a full float dually axle swap, and I have the 4.10s in the rear (what was in the axle) and 3.73s up front. I'm getting to the point where I need to swap gears up...
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