I'd personally shoot for a 400watt RMS @ 4ohm amp then.
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Jeep Liberty Limited
JVC KDSH99 headunit
2 Directed Audio SX10D4 10" Woofers
Directed Audio CSX650 Componet sets\
Directed Audio D2400 amp (for subs)
Directed Audio A502 amp (for componets)
Cheapo 6.5" Pioneers 3 ways for rearfill
Silverado Ext. Cab 4x4 z71
JVC KD-AR7000 headunit
Orion P6.2 Componet sets front
Orion C63 Coax rear
Orion 7005 5ch amp with ESP
Orion 10" H2 10.2 subwoofer in sealed box
Directed/WestCoast Customs OHDW17.2 17" DVD with surround