gonna most likely do aero's for a box build,

http://www.partsexpress.com/pe/showd...number=268-354

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, ?