think you would be better off useing a 1.6 zetec silver top mate you can use an escort rs turbo top mount with slight modification and the standard 1.6 flywheel/clutch will (if you wanted)fit directley into you gearbox im gessing your box is a 4 speed? if you wanted to go 5 speed you could use the box out of a escort rst with the lsd diff or you could use mk2xr2 box that can be picked up for about £50

as for the 1.25 zetec that seems more hasel that what its worth they suffer from bottom ends as well as i have changed a few