Whats the difference between the Two Door and Four Door versions of these?

 

the lip that tucks under the door, the one for the coupe stops between the middle of the rear door, as the four door will continue towards the back of the door, but they are the same length if thats wat u wanted to know.

 

Im just trying to find out if the Two Door Model will fit my Four door without looking stoopid

 

the four door side skirts will look cleaner if thats wat your asking, but they both will fit