duster cluster

Don't mean to hijack the thread but I am having some issues finding a speedo cable for my 68 Valiant and the picture posted above is what I need. Could you tell me a part number or a location to order this type? I have sourced one locally and on the internet that say they are for my car but they have a round ferrule on the end instead of the nut. (the speedo connection is right though) So, the one you have pictured above is what I am looking for. Any additional info you could provide would be helpful.

Thanks
Tim