I have to agree they do look strange but power for the size is mental. And as an idea of ho you can make it look good I'd have a look at this
http://uk.subaruownersclub.com/forums/topic/3642-uk-guy-returning-home-my-journey-from-a-600hp-wrx-to-a-modded-forester-and-beyond/
You will need to scroll past the Impreza that is very drool material too ;)
And your car looks great too, with the wheels we had another fozzie owner who had about 5 pictures with different allys on if I can find it I will link it too. I can't remember with the alloy's I think you was ok up until about the 99/06 before they changed but would need to check myself now :) remind me tomorrow I will have a look,