I am getting more into why we run what we run rather than just running what I had or could afford.

My question is how are you choosing your combinations that you run?

Example:
I currently have a
Bonito 7xlb 7port.
Supposed to be smooth on the bottom with a strong top end.
It is recommended to run a
9901 pipe. Supposedly strong bottom end.
It is also recommendes to run the 4121 short manifold. Which provides more top end.

Viewing this they suggest a pipe to increase low end power the engine does not produce, and a short header to add to the top end the pipe does not focus on.

Correct, incorrect?