Go here
http://ddperformance.com/driveline.htm
The McCleod or lakewood scattershield made for 87-93 5.0 mustangs should work fine as they fit 351W too. I have a McCloed on mine. I used to have a fork with an external slave, but switched to the Hyd. TO. Stock 87-93 clutch fork will work with the scatter shields. You can also get both of these from Summit or Jegs. Who makes your clutch? Centerforce TO should work fine - also at Summit or D&D.