2 FI BL 12's Ported Box Help

[LoudBass]

I need a box for my two FI BL 12 inch subwoofers. I keep looking but I can't find a good ported box that gives the required cubic feet needed. The box needs to be tuned to 32ish hertz. Can anyone help me?

 

[ObTechAudio]

And you're set on buying a prefab instead of building a box to spec? How much money are you looking to spend?