speedo cable 65/66 Dart 4-speed question

Need to replace a bad speedo cable in my '66 Dart (the end separated on the dash side). I have a '65 A833 4-speed out of a Dart. I've seen a lot of ones at local parts stores and online that say they fit, but aren't the same. Pulled one out of a '65 slant 6/auto Dart, not the same.

The only thing I've seen similar is an OEM advertised cable for about $150. Is there a cheaper one? Can the inner cable be replaced on a '65 setup with 4-speed (fitted into trans. with large o-ring)? The cable housing looks to be in good shape.

Mine looks like this:
SC659.jpg

A lot of threads and info on this topic but I couldn't find the one fitting my application. Any help is appreciated!