Why are you comparing AWD to FWD? That right there is usually a 2-4K upgrade in any vehicle. Plus you are comparing a loaded NEW model year impreza to last years model civic. Plus, you are adding like $1000? in extras to the impreza that aren't needed for anything other than aesthetics (strake kit, body molding)..
My SPORT MT model was $19100. I couldn't touch a new SI for that price around here...plus I like the AWD aspect. Does the SI even come with leather or a sunroof?