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We need "beepbeep" to answer this one. He knows almost everything.

Thanks, but not even close.

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I have to believe phosphated was the norm.

I agree, there are variations here is a b&w on a new car at the factory, you can see the different finishes on the sleeves v. the clamps. With the parts being different steels, the attaching clamps when natural would have some bluing to it.

4444565-junksleeve.jpg (119 downloads)
Last edited by beepbeep; 05/22/08 02:37 PM.
Amazing how an unchallenged lie can become the absolute truth.