Daily Driver advice?

[Relyks]

anything you all think i should upgrade

AudioQue SD 2.5 on 870watts rms 10" sub

1.99 cu.ft tuned at 36hz with PVC

AudioQue 6.5" 3 ways

AudioQue 1200.1D

sony xplod 3 pre outs 2v pre amp.

1/0 Knu Oxygen free wiring kit

stock alt (never drops under 13.5 even at idle)

Thing i have questioned

Alternator

HeadUnit

Big 3

and the pvc port.

edit: sub can not be bigger because motor size will = more depth and i drive a single cab not trying lose any leg room. and these are all thing i own already except the 3 ways

[Guest]

cant really upgrade anything if you dont upgrade subs. i mean only thing i can think of is big 3 but thats about it. a higher quality headunit might make the system itself sound better, but yeah.

[Relyks]

i was thinking better headunit as well i would like a pioneer my problem with that is it has to be a pioneer with alot of sub and tuning option cause this xplod has alot of tuning to it believe it or not and i am very familiar with it. also was thinking big 3 because the fact that some higher note can make my lights dim at night not a huge amount but enough for me to notice.