Try this set-up
Head Unit: Kenwood 7016 or JVC 926BT
Audison SLI4 impedance converter
Front: Morel Tempo 6.5 components
Rear: MTX RT693 coaxial's
Amp: Powerbass 400.4
Mono: Powerbass 400.1
Sub: Powerbase Xtreme 2XL 124D (450 RMS) with enclosure
Others: Damping Front/Rear & boot
Approx cost including cabling & fitting (~70k)