most likely a control arm i hit a curb once in my lancer and yeah it was far back making wierd noises the whole way to my friends shop 500$ later for a lower control arm and some $ for labor it was dandy again. worst case senario is control arm, axel, link, tierod, etc... that was already mentioned. depending how fast u were going frame and etc... may be damaged.

 

pics??????

 

Ok I did this crap with another one of my favorite car years ago. And it costed me hmmm 2 grand I think. So evos will probably be 3-4K at least. Rememer you might need a frame job too so Pick up that damn phone and file an insurance claim hehe. Gooduck man, oh btw that rim is gone, you can probably save the tires (Dont do what I did, thinking oh its a hassle and it won't cost that much if I pay and my insurance won't go up. It put me on the noodle diet for months!!!)

 

or you could post fookin pictures, and then we could give you reasonable advice as to what your next course of action needs to be