thats for mk3/4's tabetha...

the 2wd calipers aren't a straight forward fit onto a mk5/6

heres what you need:
4x4cosworth calipers, escort or sierra casting marks of 888 and 887 (these can also be found on mk1/2 mondeo V6's)
278mmx24mm 4WD sierra/escort cosworth brake discs
mondeo 93 onwards brakes hoses (for a mk6 escort due to female fitting to brake pipe)
some brake caliper bolts about 5mm longer
and 5mm's worth of spacers (washers) to sit the caliper centrall over the disc

i did this conversion yesterday... but i had to space my wheels out 8mm and grind a bit off the face of the caliper to give reasonable clearance this was with mk6 rs2000 alloys which are dished in... most 15" wheels will clear them.