Looking for a TURBOchannel Extender Cable

I have finally fixed the PSU of my TURBOchannel Extender (https://robs-old-computers.com/2018/09/23/h7826-power-supply-repaired/). Which means that now I would like to connect it to my DECstation 5000/240. I need the relevant extender cable, which I believe to be a BC12N or a 17-03335-01. I asked on this list about a year ago if anyone has such a cable and thought I would try asking again. I have found a 100-pin SCSI cable that mechanically fits, but I don't know if that has the correct pin assignments. I am aware of a site in the UK which lists this cable (http://refurb.icc4it.co.uk/parts/legacy/dec/17-03335-01) but it looks like one of those sites that speculatively lists things without necessarily stocking them, and it is likely to charge business prices anyway. So, two questions: 1. Could the 100-pin SCSI cable do the job? 2. Anyone have a genuine cable going spare (ideally in the UK). Regards Rob