I believe the term "common sense" would be
obvious here. If someone wants to learn what
they can about Aero, then you Google search
"Aero". If you're shopping for a performance
muffler, or just want to get info on performance
mufflers in general, you Google search "performance
mufflers".
Hope that helps.
In pennyland, most things are not as they "appear".
Know when to buy...know when to sell.