It's standard on the Japanese spec, correct? Would i tighten up the front end a bit, better turn in, etc. Or, would it upset what I consider to be the STI's already fine, balance of great handling and a quality ride. Your thoughts appreciated.

Since the new shape Impreza has a 250% stiffer shell than the previous model, I am sure I would not notice if mine had one or not.

Looks good though;):D

Strut brace would affect your insurance as well

The sti ive got coming has strut braces front and rear.

don't know how much difference it'll make

you can buy them from the dealer I believe.

interesting question though