Identification of F15 2WD?

[Grant Bowker]

I don't normally like to cast doubt on field measurements of original parts....but....
Parts list F15A-01 gives a length of 51-3/4 for part *C01Q-2275A (cable-hand brake-assembly),
Parts list F15-01 doesn't give a length for *C101W-2275,
Neither manual gives alternate numbers for earlier or later production.
The same part numbers and length notes appear in the earlier parts lists that cover all models.
I'm puzzled as when I was shortening a pair of *C01Q-2275B cables (originally 86 inches long) to recreate *C01Q-2275A cables for the 15cwt GS trailer I thought the measurements needed to be nearer those Jacques gave than the "official" version.