Im lost as to what your trying to do but here goes...

Calipers

Mondeo '00 ->
Piston Bore 57mm, Disc Thickness 24mm Type BOS
Will also fit:

Mondeo 2.0 4WD 95-00
Mondeo 2.5 V6 ESTATE 96-00


Mondeo 2.5 V6
Piston Bore 60mm Disc Thickness 24.1mm Type ATE
Will also fit most Mondeos 93-00 with ATE not Lucas calipers


Saff 4x4 (same as ATE but not Lucas XR4x4) With ABS
Piston Bore 60mm Disc Thickness 24.2mm Type ATE

This caliper will also fit
Escort RS Mk3/4
Scorpio EXC 2.9i 24V
Sierra 2.9i XR 4X4

Escos
Piston Bore 60mm Disc Thickness 24.2mm Type ATE
(so will fit the above)

Granada (covered by Scorpio above)
But some have Lucas calipers on so watch out.


So your Escort if its an RS already has a 60mm bore 24.2mm caliper so where's the upgrade other than a disc swap ?