I found that I needed the rudder pedals as far forward as I could get them, to get enough knee room under the instrument panel. I'm 6'0".
I ran a 1/2 x 1/2 aluminum angle vertically in the center of the firewall. I used a piece of 1/4" cold roll steel rod from one outside rudder pedal, through a hole in the angle, and to the opposite outside rudder pedal. When one pedal goes in, the other comes out a similar amount. That permitted a couple of inches more distance than the pulley/cable system that I tried initially. A bow in the rod is the tensioning device. Your results may vary. Jim Vance va...@claflinwildcats.com