Looking for SCSI cable and active terminator for CyberstormPPC

[davec]

Hello,
I have recently got back into the Amiga world and have been using my Amiga4000d (towerfied).
It has a CyberstormPPC card in it, and back in the day I had the Cyberstorm's onboard 68pin SCSI controller hooked up to a 50 pin external connector to which I had a Jaz drive connected.
Internally, the cable from the CS to the external adapter was a 3 way cable with active termination happening in the middle and converting from the 68pin to 50pin. However 20 years ago I pulled that cable and terminator and put it in a PC that I later sold.
Now, I am having a hard time getting my head around the whole scsi thing and cannot find appropriate cables and terminators.
Does anyone have any advice on where I can find a 68pinUW female (from CS) to 50pin FastII female external cables (3xway so termination can be added internally) as well as Active Terminators?

Many thanks,
Dave