box for W15GTi MkII

[teggybwoy 10+ year member]

need some guidance building a box for 3 W15GTi MkII. Its goin in a 05 grand cherokee, this would be for spl prrposes and would like to get the most out of the subs

please help me out, the car show's next sunday

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[groundpound4200 5,000+ posts]

http://manuals.harman.com/JBL/CAR/Boxes%20and%20Parameters/W15spl_f.pdf