Need Help/Recommendations for Enclosure Design for 3 E8v3s

[soBASED]

I may be switching cars with my dad... The car I would be getting is a 2007 Volvo XC70 wagon. For this box, I would like to tune to 30hz. I want rediculous/destructive lows. Thinking of firing the subs up and port back? Subs will be powered by a Soundstream TX1.1300D at 1.34 ohms. The amps not CEA certified and its rated at 1300 watts x 1ohm. I'm thinking it'll be around 1000 with the subs.. Box size doesn't matter to me, I got at least 40" width , I'd like to keep the height around 12.5/13 so it fits under the trunk pull out cover. I rather have the box wider than deeper also. My objective is to have killer lows. Shooting for SQ not SPL, don't plan on metering anytime soon. I designed a box with torres.. I wanted my subs to be flush mounted and in the form of a mickey mouse head shape ,you know? Not sure how deep my box would have to be though, but I will make a template of the box to see how much room it actually takes up. If not, I plan on having the subs in a line across the top of the box, my ports will be firing towards the hatch and I am going to have to "bend" the aeros and use pvc elbows. How far underneath the subwoofers should the port be? I was going to have the ports stacked on top of each other but if they need X amount of space from the sub then I will do them on the bottom of the box and next to eachother. And lastly, I am unsure of how much volume per sub, I was thinking around 0.70-.80ft^3 although sundown recommends the max of 0.75ft^3. This will be my first aero port enclosure btw. Here is what I calculated for a box.

Edited March 7, 2013 by soBASED