I have gotten a few pings about the custom pedals that I came up with a few years back... the links to the photos that I posted on page 3 of this thread had gone broken which left the design in the dark so I re-hosted the images and fixed the links on that original post. The template to making the parts out of 4130 .090" plate is still there in that post as well.
The parts were tig welded together & powder coated.. they pivot on a long 6" bolt through some hat bushings in holes drilled at the bottom of the rudder pedals, the upper master cylinder mount is welded to the brake pedals even though some bolt holes are shown in the template (I didn't use them, but I suppose they could also be bolted).
They work fantastically, the geometry is perfect and after 4 years of flying in gusty places I wouldn't change a thing about them.