I'm not sure what year model got what changes but...
These are the reasons to seriously consider the Lokar cables.
The early models had the bellcrank for the kickdown mounted on the firewall instead of the engine. They didn't have the throttle return slot in the kickdown linkage either. A broken left motor support would allow the engine to raise up and in turn open the throttle. Result is a runaway car.
If the factory stuff wasn't safe, mix-N-matched or homemade linkage and cable wont be safe either.