It should not have fitted, the lower part of the inner arch liners sit 2 inches further back as well as 2 inches further up that the st bumper and the fog lights are totally different, so much so that they won't even plug in to anything other than the st fog lights and the under tray is st specific as its much deeper and a totally different shape to the standard versions

And you are adamant that it was the st bumper and not a zetec-s that you were told was an st bumper?

It's almost like saying a saph bumper will fit directly to a 3 door

They will "fit" but its a lot of fucking about and it doesn't look right