Yeah they're like that. Ford revised all the ground effect parts sometime after '93 to fit better,made them a little longer,
even thought it was after they had already stopped making the car..
You could tell by the color from behind, the yellow ones are the old ones that don't fit properly.
The newer ones are gray (not the paint, the plastic itself that they're made from).
Not sure about the new aftermarket ones you could get now, like from 50resto, but i'm sure they copied the newer ones.