Help me out

[Raisedin305 5,000+ posts]

OK next Sunday I will be attending a car competition. I wanted you guys to give me some advice on how I should setup.

Car- 05 Ford Expedition

Subs- Two 15" Kicker L7s

Amp- Orion 2500

Electrical system- 630 cca battery, 130amp alternator

Ported box, each sub getting 4.1cubic ft tuned @ 35hz.

Should I put the box/port as close as I can to the rear of the vehicle?

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[Raisedin305 5,000+ posts]

Would doing the BIG 3 help me out alot?