Cable I have is C8ZF-14431-B. Is that the wrong cable for a 68?
That cable is shown for 390, 428 and 428CJ with smog and with one clamp (68 Electric, AM0023 pg42).
The assembly manual calls out C8ZF-14431-A but I couldn’t find a -A when I was trying to run down all of the parts.
Out of curiosity, where did you look?
The 75 MPC shows a generic 36 inch long replacement without details, D1PZ-14431-D, which is no help.
A slightly different situation happened to me for the 66 289 application. Both my Oct 65 builds used 65 cables, two clamps, although one clamp was indicated. The explanation was to use up old inventory. Therein lies the problem, what is specified vs. what you found. The latter usually required documentation.
Jim