gonna most likely do aero's for a box build,
most likely these unless theres anything better ?
with how it sounds on the site ,
they come with a 6 inch radius,
and 17 inches long,
Then you trim them to get your desired port area,
When you calculate your port volume / area off of these,
Do you go off *pi* X radius X height ?
so to get 20-45 sq inches of port, What would i need off these, ?