Todd, why not write back and ask for specifics.
The Holley DVD shows a couple different kinds of cable linkage they offer, but it's for newer cars. You would think with the limited number of carb options, and their manifold being used on specific engines that Clifford would have a market for linkage.
This is one thing that hasn't changed since the dawn of hot rods... carb linkage. It's always been a PITA.