the calipers on the 4wd cos and 24v granada are the same
it's the mounting bracket that the caliper bolts onto that is different
these will have either M10 for 90-91 granadas or M12 for the 92-98 granada/scorpio

they also differ on the offset they provide, there is an extra 4mm on the 4wd cos brackets that can be removed if you want to fit them to the XR hubs with 2wd discs

there are more variations with the hubs on the 2.0 dohc 4wd cars but, for this instance, it seems that you've got the later M12 bolts and, by drilling the hubs, you will only be able to use them calipers

on the plus side, you will now be able to bolt on mk3 mondeo calipers and st170 focus 300mm discs