70 Duster- Correct speedometer cable

I have a 70 Duster that needs a new speedo cable. Most cables seem to have a 5/8" connector at the transmission, but I have three small block trannys in my garage and all three measure 7/8".

Is that cable somewhere around 65" in length?
yes 7/8 is correct, and the push clip style at the top (white connector) for some reason most listings are not correct. I got the correct one from vans auto. Swingn’