What gage power wire and audio wire do i need to hook this amp up and this stereo?

[warning]

Stereo: http://www.circuitcity.com/ssm/Sony-CDX-GT630-iPod-Ready-Car-Stereo-CDXGT630UI/sem/rpsm/oid/223485/catOid/-13089/rpem/ccd/productDetail.do

Amp: http://www.circuitcity.com/ssm/Kicker-Mono-Channel-ZX-Amplifier-08ZX3001/sem/rpsm/oid/202468/catOid/-13095/rpem/ccd/productDetail.do
What gage Monster wires?
Also the wires needed for 2 of these subs. http://www.circuitcity.com/ssm/Kicker-12-Comp-Subwoofer-07C124/sem/rpsm/oid/172162/catOid/-18281/rpem/ccd/productDetail.do
It just needs to be long enough to fit from the trunk of a honda civic