> I know I sound like an old coot but frankly I'm glad my dad showed me how to install/aim headlights and along with explaining the benefits of a working unmodified exhaust system and how it should sound.

Reminds me of the hotrodding chapter of John Muirs[0] venerable How To Keep Your Volkswagen Alive [...] for the Compleat Idiot[1] that starts describing the interplay between various systems and how just throwing a hot cam into an engine and calling it a day is a bad idea. Basically - How to hotrod your engine:

1) don’t

2) if you must here’s what you really need to know

[0] https://en.wikipedia.org/wiki/John_Muir_(engineer)

[1] https://www.amazon.ca/dp/1566913101