This depends on the model. I have an Acura project car and most of my performance relevant parts are Honda part numbers. Interior is the main exception. Heck,

This depends on the model. I have an Acura project car and most of my performance relevant parts are Honda part numbers. Interior is the main exception. Heck, I've got a Civic intake manifold in the room with me to replace the Acura one, haha. (The generation of K series after mine has better airflow and it's an easy enough swap.) The Acura brand doesn't even exist outside of the US- if a car is sold in Europe or Japan the parts are Honda.