the shell should be the same as any other mk2 fiesta as far as im aware so you should be able to use a normal fiesta xr2 engine mount.
would stick the 5 speed box in thoughas swapping that and the gearlinkage is less hassle as you can use the original xr2 clutch and release bearing and know 100% it will work as it should. the thing spacer is merely a debri guard to stop crap getting into the flywheel.