Part number 3577529 440-6 kickdown rod

[71Shaker]

I'm looking for some confirmation of a part that I received many years ago. I am posting pictures but want to verify it is a 1971 440-6 trans kickdown linkage rod. There is a part number tag on the piece and it has been kicked around many shelves but since the tag is not attached I would like to validate it is the correct part. In examining the ends I don't see any evidence of installation. If this is correct, I see one NOS sold last year but would like any input as to the value.
Thanks in advance!

[pschlosser]

What makes you think this is a 6-pak linkage and not a 318?

[toadstool]

Isn't there apart number on it like this?