You are probably better off coughing up the $125 to buy from Galil. Forget about the references to a "SCSI" cable. SCSI uses several different connectors and was never 100 conductors.
The Galil uses the Tyco/AMP Champ 050 connectors. This is basically a high density version of a Centronics type connector (remember the 36-pin printer cables?). Male ends have flat connectors on both sides of a rectangular center piece. I believe that the Cyber Research cable you ordered is a .050" Dsub cable, which uses pins and sockets (a HD version of the old serial port DB9 or DB25 connectors).
Board mount plugs and sockets are available for the Champ 050 system, but the cables or cable ends are almost impossible to find unless you want to order 6-800 pcs.
Mike