i added two rockfordfosegate t1's 12's wired to a 1000.1 memphins monoblock d amp i didnt want to replace the head unit, so i got the rca converter and got the wires from the rears 6x9's i ran a four gauge wire for the batt to the truck. you will never get the same bass out of a stock unit then from buying a new deck but you will lose all your controls.:beer: