If you only want 12s its too easy.
Dogbox PPG is another one...
IF you wanted 12s, get a full exhaust (decent dump pipe is important), EBC (1 bar), decent intake cold air/pod filter, and a tune. That should give you enough power to run 12s all day. I know guys who run low 12s on the standard 14" wheels/tyres with that combo, freaky quick. All you need is a huge launch. Can kill boxes but how often would you do it...
GTiR motor is good SR. I went to GTR because it was the car I've always wanted and I found one which stood out so I had to have it. Still paying the price lol