I'm in need of a '58-'59 power steering pitman arm. I searched previous posts and research the factory parts manual to find PS and manual steering pitman arms are different (this is fairly common through-out Fords). Research leans to years being separated by '56 and older, '57, '58-'59, '60-'62, and '63-'64. All years require different part # for manual and power steering. I found one on ebay with the vender claiming a wide range of interchange. The vender claims the FoMoCo interchange manual supports '54-'60 interchange. I am skeptical of this info.
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