I made one for my 70 dart. Bought a stick of 5/16? Rod at Lowe's and used a propane torch the heat and bend one. It was EASY. I cut the clip/swivel end off of my factory column shift rod and welded it to the rod I made, to be able to use the OEM clips and washers to mount it. the rod was only a few bucks and I had an hour or so of labor in it.
Unless it's an original factory car or something, I would recommend making it. It's simple and you'll save a bunch of money. I bought the rod and handheld torch/bottle cheaper than buying one.