Hey Justin,
The Weber choke assemblies come in two styles, left pull and right pull. Do you know which you have? Since there were no factory cars fitted with Weber’s other than the TiSA, there is no “factory” cable. My suggestion is to figure out how long your cable needs to be, shorter for right pull, and order a universal choke cable. Probably a good selection from an English car parts supplier. You can cut the outer sheath to suit your needs.