Does anyone know if the any difference between the lenght of a 4 door and 5 door exhaust?

Also has anyone tried to fit a Impreza rear box on to a legacy estate?

Another one: if so, does anyone have a none standard rear box that they want to flog?

 

The floor pan is the same length I'm sure as have had wagons and saloons and swapped around no problems. Legacy stuff I have not a clue!

Tim