yes the upper grill from an ST will fit straight swap,
Can you put the St upper grill on a standard bumper?
Where did you get the one you have on your lower grill I think it has a chrome strip around it?
Without changing the whole bumper what's the best looking grill you could recommend just to give it a little better look than standard stock bumper?
I had the titanium spec grill comes in two parts from Fordpartsuk.com
I now have the zetecS upper and lower grills fitted had then painted gloss black,
Titanium grill is a nice upgrade,
See the PDF version of my grill change guide it states the part numbers for each grill here's a link: