looking for a place to buy some flared ports bigger than 6 inches. I checked ebay but did not find any that large. looking for the ones with box ends flared. right now im running a slot port tuned to 35hz but thats only running 145.7 dB so I'm building a new box for just spl. Going to tune it around 45hz and go from there to see where my cars resonant frequency is. I'd love to hit 150 but i'm aiming for 148-149. Running a RE SX 15" with 1000wrms.