With the HiFi subs you need 1.75 cubes per sub, tuned to 40 Hz. Or you can go the simple route and the one I would advise for a newbie, and run a sealed box. When you learn and know enough about Car Audio then make the switch to ported.
I think this will be your best bet.
Depending on your location I could build a box for the subs and ship the box with the subs installed.
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-Ryan
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