Honestly the GT2560 that I'm using is likely a better match for a Pressure Ratio use on the 1.8 than the 1.4. I hate to say it, but the name of the game to reach 300+ hp is gonna have to be high-boost. Which I am building the engine to handle. But the 2560 doesn't look excellent for high boost. The idea was more airflow over high-boost, but the limited RPM and displacement are a better candidate for high boost (30+) to make serious power.