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Old 06-15-2020, 12:09 PM   #2
SCOTI
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Join Date: Apr 2001
Location: DALLAS,TX
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Re: 3/4 ton A-Arms on 1/2 ton Crossmember

They are interchangeable. I have an x-member that was sourced from a 1/2 ton under my 1-ton dually.

As mentioned, the upper a-arm shaft mounting studs went from 1/2" to 9/16" for the HD trucks. I don't recall the lower U-bolt holes being different though.
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