> 50-pin narrow internal cabling, and a 68-pin wide drive I want to
> use in it.  [...]  I stress "working" because I mail-ordered one
> before, and it wouldn't work.

I also had this problem.  I became so irritated that ventually I
plugged a centronics-50 to HD68 *external* SCSI cable directly into
the back of my drive.  I used electrical tape to keep the mating
screws from shorting out jumper pins on the drive.  I got mockery from
CSOps for this, even including OpenBSD sysadmins who tried to claim it
was ``dangerous''---to what, I'm not sure---but now that commercial
equipment has become of such low quality, I don't see much
non-imaginary disincentive to these obscene tactics.

Getting from internal-50 to external centronics is not that hard---you
can use an old PeeCee SCSI board wrapped in antistatic bubbles.  For
me, this worked for pin-to-pin connection, but failed for narrow-wide
conversion.  Practical viability all depends on how often you knock
over piles of paper or spill things.  I'm pretty bad in that respect,
but this works for me, and it can get you back to your real job
quickly, especially if you happen to have one of these cables lying
around.

-- 
shadowy grove
outside the locked ward
a moonless night
  		-- Mark Brooks