1965 Dodge Dart GT convertible with 318 and 727 Transmission, linkage or cables do not work.

There was a company (now out of business) that made a custom cable setup to use the stock shifter with a 66-later transmission. I believe you have a couple if options: use a 65 dual cable 904. There are other considerations when using a 68-up engine OR use an aftermarket cable shifter. IIRC there is one shifter that fits under the stock console and looks similar to the stock shifter.