320 is def reachable but not with $3000 on wrx motor and be reliable. Do the swap then build as you go. I think the best part of it is building the car slow and can feel it slowly get more powerful, enjoy it and get used to it rather then putting a ton of mods on it and trying to get used to 400whp on an AWD car its going to handle alot different then your honda (I had a honda hatch w/turbo before I got my first subie). All that matters is if you like it and you enjoy it. This site has alot of great info and people with lots of knowledge but also has alot of people who dont know what their talking about and people who like to talk crap and try to bring you down. Im getting a bugeye to make in a track car yes it would be easier to buy an evo or sti but bugeyes are sexy and looking forward to build it from the ground up.