Help with box build

[kmb504]

I'm going to build a box for my 2 ab vfl 8s. They will be powered by my ab ph-2500.1. I'd like a ported box tuned to 34hz, 1.5ft3 net. The displacement of each sub is about 0.073ft3. I'd like for the box to be 43" long, as for the height and depth, there really isn't a limit, so what ever dimension will work to get the correct airspace and tuning. Thank you in advance for any help.  It will be sub down port back as it will be in the back of my jeep.

[dudeogo]

I can totally hook you up with a design if you want. But are you sure you want subs down?