The sport ka box is not the one to use, requires too much modification really and the ratio's are terrible (too close).
If you are CVH you need a front starter IB5 cable clutch box from am MK5 escort or Escort diesel van (long ratio's if you go diesel though) for direct fitment.
If you are ZT then the early KA 1.3 box (Pre 2002) and fit a hydraulic master cylinder to your pedal (hole in bulkhead, modify pedal to take clevis pin, run pipe to slave).