I wasn't referring to the non-flanged chrome arm (assumed to be C5ZZ-17526-A). I was addressing the change to the flanged arm and the undocumented chrome version versus the dull version. Sorry if I wasn't clear on that. I tend to write less than what I am thinking!
I was guessing that C5ZZ-17526-B would have been chrome and flanged (not documented in the Ford books) versus C5ZZ-17526-C which is specified by Ford as dull and is listed as used on the same date what I believe was the date of change to the flanged arm and all the other parts that would be effected by that change. I am stating that Ford left out C5ZZ-B from the record and only lists the C5ZZ-C. An error of some type. We know there was a chrome flanged arm so how long was it used before the dull arm replaced it?
Regards,
Scott