not for a while yet. most of the world is pretty much dependant on old fashioned power plants so at the mo electric cars dont make much sense . once we are able to run most of the cities on solar or some kind of renewable green source then we will see much more of this i reckon
i will give my honest opinion. it looks ok but i see imprezas with plates saying 'SCOOBY" or something like that all the time to the point its quite the norm now.
but if you like it i say go for it chap.
coilovers will make more of a diff than OEM. depends how much you want to spend. i went with coilovers. and it made a huge difference with my T1-R tyres
engine wise its the usual. forged pistons,rods,bearings. i assume you will be getting a sti? as the blob gearbox are tough as nails. though for 650 id get a ppg kit just for assurance
mine idled about 700 or so IIRC. just cleaned my maf sensor and swore at it a few times and it felt a bit better, was a while ago but i think thats all i did
When I broke mine I just wedged a bottle in between the intercooler pipping and the light. Then just pit a rubber hose in there and worked a treat for a good 5k miles