kit availability, price etc. The 570 kit is a pretty bare minimum mod. One could look to turbos, coolers, brakes, suspension etc down the track. I will use a Cobb custom tune as well. Not that keen to fork out the big bucks for a rear exhaust yet...will see what gains the 570 system makes without the rear system (plus don't need the extra noise), and then decide.
I reckon the 570 plus cobb tune without the rear exhaust will be a nice mod that unleashes the potential of the car without being too crazy.