K member ID

If any of you guys have time to respond, I am trying to verify this K member will suit my 340 LA install into 68 Barracuda. Currently possess a /6. K member in question is approx. 20 inches from outside perch to perch. From what I have understood, this will fit 67-72 A body V8 install. Understand I do not want K member from 67 for reasons I currently cannot remember. Do this look like a good part for my application? If so, what vintage K member is this?

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