Question about Mass Airflow Sensor and BBk throttle body

Hi I have a question I have a 2002 Z28.. I heard lot of guys they Port there Mass Airflow Sensor to 85mm. Is that the same as buying a Granatelli Mass Airflow Sensor or slp mass airflow siensor? One other thing I was lookng at a 80mm throttle body from bbk are they good? thanks

Does anyone have those mods on there car


thanks

steve