first time using aeros.well not aeros but sono tubes and i know how to calculate surface area of the tubes but not the displacement thinking of doing 4 8" tubes for 200 si port or depending on displacement 3 10" for 240 si port.build wont be started for a while but slot ports take up alot of room from what i hear and workin with 18's i need all the room i can get thanks fellas
