Help request for the best sub/amp set up for my small car (Suzuki X -90)

[bgt2u]

My subwoofer enclosure is getting closer to being done. I obviously still have some more work to do, but, it's getting there. I will be cutting out the holes for the four 8 incher's next. For those of you who thought that I could not probably even fit a 2.5 cube box in there....well, this one is 8.97 cubes, all in the tiny X-90, and I still have 2/3rd's of my trunk space availible. Yes, I am pretty amazed too!!....lol.

 

[bgt2u]

Correct me if I'm wrong but 4 d2 subs will have a final load of 1ohm?

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Yes, that is correct, 4 dual 2's can be wired down to 1 ohm.