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Old 07-02-2018, 08:43 AM   #3
Mike C
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Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,713
Re: Questions on axel swap

Front axle is a direct replacement. Rear axle requires relocating both the spring perches and the shock mounts. Rear springs should be 52” on a short square body and are direct replacements. Some squares had 56” springs but I don’t think 1/2 ton trucks did, but never say never.

The front springs are not interchangeable. They are too long for a 69-72.
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