8" Rockford Fosgate HX2 with Virtual Technology box $200
Rockford Fosgate power 360.2 Amp $120

$300 for the whole setup.

8" RF sub spec- 250w RMS/500w Peak, DVC, 2ohm/4ohm,84DB.
RF Amp spec- 90x2w RMS/4ohms,180x2w RMS/2ohms.