Congrats on the new car. As for the headers I highly doubt Vinnie put UEL headers on. The new WRX's run a twin scroll turbo which needs EL headers to operate properly. It would actually hurt the performance of the car.
Starting to advertise my BRZ for sale. My job schedule recently changed and I can't justify having two daily drive able vehicles and a 4wd truck is more important for me.
2013 BRZ Limited in Sterling Silver Metallic
Asking: $19,000
Details:
~21k miles
6 speed manual - proper amsoil gear oil...
Just doing coilovers on your car won't make it handle "like its on rails." They will reduce body roll depending on how stiff they are. One thing I have noticed is simply changing tires helps a lot.
If you are okay with a bit more of a stiffer ride then coils with a bit higher spring rate then...