From my experience, the adjustable clutch cables are the worst. I use a factory Ford cable and a firewall adjuster. Back in the early 90s when I replaced the factory clutch, I went with the Ford Heavy Duty replacement, but the pedal feel was heavy. Eventually went to a Cobra/King Cobra clutch, Ford cable, and firewall adjuster, aftermarket quadrant. Much nicer.
Pros: much nicer
Cons: pedal feel was heavy
