ECM reprogram/tune or new chip perhaps?
Not sure if performance CAM available?
Turbo Kit (or supercharger, don't think that's available)
Nitrous Kit
Or if really feeling lucky, engine swap to MR20, then add Turbo, Nitrous, etc.?
I don't think there is much more you can do beyond this and what you have already done with Intake/Exhaust. (Exhaust headers?)
Not sure if performance CAM available?
Turbo Kit (or supercharger, don't think that's available)
Nitrous Kit
Or if really feeling lucky, engine swap to MR20, then add Turbo, Nitrous, etc.?
I don't think there is much more you can do beyond this and what you have already done with Intake/Exhaust. (Exhaust headers?)