What should i upgrade too?

I got a honda pilot with the big three already done alt,battery,0 gauage i got two L7 kickers 12' on a fosgate t1500.1 i got 4 beyma pro 6g40nd with 4 jl tweeters on a fosgate T1000.4 its loud yes but i want louder and more bass any suggestions? I have the truck space to fit and carry heavier subs.

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