RD D9s - $800 x 2 = 1600
RD Heavyweights - $550 X 2 = 1100
DC Power Alternator - $530
Wiring - $190
Alpine Processor - $200 (thanks eBay)
Sound Deadening - $250
Batteries - $750 total
Speakers - $320 so far
Speaker amps - $160 x 2 = $320
= about $5000
I dont want to add any more

I'm hoping to be very competitive in DB Drag bass race 149.9 class. This means I will have to play as close to 149.9 decibels (as recorded on the termlab) without going over, playing music, for a duration of 30 seconds. I will try to find some vids to show what I mean..