I can make the shift rods in any length you might want and have loads of rod ends as well. The rod ends (or Heim joints) have 6mm thread on the end. I can put Heim joints on one end or both ends of the shift rod.
One end has to be tapped for 6mm reverse thread - I can do that as well.
Some shift rods I've made:
The rod style can be just about anything. Made completely round, round with wrench flats, all hex, hex ends only, knurled, etc. I'm not a big fan of the knurled finish as it gets dirty and is difficult to clean.
Eric