Boom stick 942z

I am curious if a wrx engine will bolt into my 1998 Impreza with a non turbo 2.2 in it now this engine is sounding pretty rough and before it completely dies i'm doing some research so if it can be swapped without doing heavy mods to frame or engine please let me know what all needs to change. i'm assuming wiring will have to change (do they make wiring harnesses that will convert it?) and i'm hoping the engine mounts are the same.