someone have experience with Firm Feel steering sector support?

I put one in ten years ago. It works great but came with a different bracket. I had to drill two holes into the edges of the k member.

I assume it was on your 1969 Cuda? When you installed it, there is a big sleeve nut that replaces the original pitman arm nut - did it go on with the hex toward the steering box or toward the ground? Any chance you could take a photo of yours that shows to shape of the bracket?