what you are actually looking for is a 18/36 pin pcb edge connector housing with a polarizing pin. the question now is wether you want to crimp that to a ribbon cable, crimp all individual pins to leads, or if you want it to mount to a board...
this guy here has them
http://homearcade.org/BBBB/conectas.html#edge scroll down to
"18/36 Common on Konami games $5.00"
heres a pic of what you would get
- these are meant to have each pin wired individually. -
you could get the polarizing pins there too, or not bother.
and I would be happy to ship these to you if needed, but by the sounds of it, this guy Bob seems like a decent fellow. he does indicate he can ship internationally if needed.
http://homearcade.org/BBBB/ordering.html