Wiper arm swap out?

Hi. My first proper post. 

Ive owned my first Subaru for just over a week now and loving it apart from the wiper blades. I do prefer the aero type but I don't want to fit the universal one as they look horrible and too bulky where the blade connects to the arm. 

I own a 2003 sti. Do later Impreza's come with aero blades as standard and if they do  is it possible to swap out the arms.  

Cheers