not 100%m8 but i dont think cams will fit as you can change around 1.8 to 2.0+ reverse but not on1.6 ?? about injector side of things think you may need fuel rail pressure reg etc but not sure if inlet could take diff injectors (note you may have to change other sensors aswell as air flow meter etc.sorry to say but better doing it full 1.8 or 2.0 for best gains and more tuning potential