Here’s an example of a focus ST k03 turbo, capable of 290whp/370wtq. Like most OEM turbochargers, the compressor intake turbine circumference is always bigger than the circumferences exit’ of the compressor. The focus St compressor turbine is 40mm/50.9mm. The 8ar-fts compressor turbine is 40mm/54.05. Consensus, we have a bigger compressor “turbo” than the focus ST. I’ve covered this in recent posts but I wouldn’t expect you to read the entire thread